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Atlantic GeologyJournal of the Atlantic Geoscience SocietyRevue de la Société Géoscientifique de l'Atlantique
Detrital zircon signatures in Precambrian and Paleozoicsedimentary units in southern New Brunswick – more pieces ofthe puzzleSandra M. Barr, Deanne van Rooyen, Brent V. Miller, Chris E. White et Susan C.Johnson
Volume 55, 2019
URI : https://id.erudit.org/iderudit/1064942arDOI : https://doi.org/10.4138/atlgeol.2019.010
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Éditeur(s)Atlantic Geoscience Society
ISSN0843-5561 (imprimé)1718-7885 (numérique)
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Citer cet articleBarr, S., van Rooyen, D., Miller, B., White, C. & Johnson, S. (2019). Detrital zirconsignatures in Precambrian and Paleozoic sedimentary units in southern NewBrunswick – more pieces of the puzzle. Atlantic Geology, 55, 275–322.https://doi.org/10.4138/atlgeol.2019.010
Résumé de l'articleSouthern New Brunswick consists of a complex collage of fault-bounded beltsof Late Neoproterozoic igneous and metamorphic rocks, Early Paleozoicsedimentary, metamorphic and igneous units, and overlying Carboniferoussedimentary rocks. The area also contains the boundary between theAvalonian and Ganderian terranes as interpreted in the northern Appalachianorogen. New detrital zircon ages reported here provide improvedunderstanding of depositional ages and provenance of diverse Neoproterozoicto Carboniferous rocks in this complex area. Detrital zircon data from sampleswith Neoproterozoic maximum depositional ages indicate a dominantlyGondwanan provenance with a strong influence from the Amazonian craton.However, quartzite from The Thoroughfare Formation on Grand Manan Islandcontains dominanly 2 Ga zircon grains, consistent with derivation from theWest African Craton. The age spectrum is similar to that from the HutchinsIsland Quartzite in the Isleboro block in Penobscot Bay, Maine, strengtheningthe previously proposed correlation between the two areas. Cambrian samplesalso show prominent peri-Gondwanan provenance with strong influence fromEdiacaran to Early Cambrian arc magmatism. The maximum depositional agesof these samples are consistent with previous interpretations of Cambrian agesbased on fossil correlations and field data. A Carboniferous sample fromAvalonia shows a significant contribution from Devonian magmatism as theyoungest detrital component, although its depositional age based on fieldrelationships is Carboniferous. The results exemplify the need to integratemultiple datasets in making interpretations from detrital zircon data.
Copyright © Atlantic Geology, 2019
ABSTRACT
Southern New Brunswick consists of a collage of fault-bounded belts of Late Neoproterozoic igneous and metamorphic rocks, early Paleozoic sedimentary, metamorphic and igneous units, and overlying Carboniferous and locally Triassic sedimentary rocks. The area also contains the boundary between Avalonia and Ganderia as interpreted in the northern Appalachian orogen. New detrital zircon ages reported here provide improved understanding of depositional ages and provenance of diverse Neoproterozoic to Carboniferous rocks in this complex area. Detrital zircon data from samples with Neoproterozoic maximum depositional ages indicate a dominantly Gondwanan provenance with strong influence from the Amazonian craton. However, quartzite from The Thoroughfare Formation on Grand Manan Island contains dominanly 2 Ga zircon grains, consistent with derivation from the West African craton. The age spectrum is similar to that of the Hutchins Island Quartzite in the Isleboro block in Penobscot Bay, Maine, strengthening the possibility of correlation between the two areas. Cambrian samples also show prominent peri-Gondwanan provenance with strong influence from Ediacaran to early Cambrian arc magmatism. The maximum depositional ages of these samples are consistent with previous interpretations of Cambrian ages based on fossil correlations and field data. A Carboniferous sample from Avalonia shows a significant contribution from Devonian magmatism as the youngest detrital component, although its depositional age based on field relationships is Carboniferous. The results exemplify the need to integrate multiple datasets in making interpretations from detrital zircon data.
RÉSUMÉ
Le sud du Nouveau-Brunswick est constitué d’un collage de ceintures délimitées par des failles de roches ignées et métamorphiques du Néoprotérozoïque tardif, d’unités sédimentaires, métamorphiques et ignées du Paléozoïque précoce, ainsi que de roches sédimentaires sus-jacentes du Carbonifère et, par endroits, du Trias. Le secteur comprend également la frontière établie entre Avalonia et Ganderia selon son interprétation à l’intérieur de la partie septentrionale de l’orogène des Appalaches. De nouvelles datations de zircon détritique rapportées ici permettent une meilleure compréhension des âges sédimentaires et de la provenance des diverses roches néoprotérozoïques à carbonifères dans ce secteur complexe. Les données relatives au zircon détritique obtenues des échantillons faisant état d’âges sédimentaires remontant au maximum au Néoprotérozoïque signalent une provenance en prédominance gondwanienne avec une forte influence du craton amazonien. Le quartzite de la Formation The Thoroughfare sur l’île Grand Manan renferme toutefois prédominament des grains de zircon de 2 Ga, ce qui correspond à une dérivation du craton de l’Afrique occidentale. Le spectre de l’âge est similaire à celui du quartzite de l’île Hutchins à l’intérieur du bloc Isleboro dans la baie Penobscot, au Maine, ce qui renforce la possibilité d’une corrélation entre les deux secteurs. Les échantillons du Cambrien font eux aussi état d’une provenance périgondwanienne prononcée, marquée d’une forte influence d’un magmatisme d’arc de l’Édiacarien au Cambrien précoce. Les âges sédimentaires maximaux de ces échantillons correspondent aux interprétations antérieures des datations du Cambrien basées sur des corrélations de fossiles et des données d’échantillonnage sur le terrain. Un échantillon du Carbonifère provenant d’Avalonia révèle une contribution prononcée du magmatisme
Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern
New Brunswick, Canada – more pieces of the puzzleSandra M. Barr1, Deanne van Rooyen2, Brent V. Miller3, Chris E. White4, and Susan C. Johnson5
1. Department of Earth and Environmental Science, Acadia University; Wolfville, Nova Scotia B4P 2R6, Canada2. Department of Mathematics, Physics, and Geology, Cape Breton University, Sydney, Nova Scotia, B1P 6L2, Canada
3. Department of Geology and Geophysics, Texas A & M University, College Station, Texas 77843-3115, USA4. Geological Survey, Nova Scotia Department of Energy and Mines, Halifax, Nova Scotia B3J 2T9, Canada
5. Geological Survey Branch, New Brunswick Department of Energy and Resource Development,Sussex, New Brunswick E4E 7H7, Canada
Corresponding author <[email protected]>
Date received: 31 March 2019 ¶ Date accepted: 15 July 2019
doi:10.4138/atlgeol.2019.010ATLANTIC GEOLOGY 55, 275–322 (2019)0843-5561|18|0275–0322$8.20|0
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 276
INTRODUCTION AND GEOLOGICAL SETTING
Southern New Brunswick consists of a complex assem-blage of three fault-bounded belts of mainly Neoproterozoic rocks with minor Paleozoic rocks termed (from southeast to northwest) Caledonia, Brookville, and New River, as well as five belts of mainly lower Paleozoic rocks termed Kings-ton, Mascarene, Annidale, St. Croix, and Fredericton (Fig. 1a). The area spans the boundary between Avalonia and Ganderia as defined by Hibbard et al. (2006), who placed the northern edge of Avalonia at the Caledonia-Clover Hill Fault that forms the boundary between the Caledonia and Brookville belts (Fig. 1b). In this interpretation most of New Brunswick, including Grand Manan Island, is considered part of Ganderia, as is adjacent New England (e.g., Fyffe et al. 2011; van Staal et al. 2011), whereas Avalonia extends offshore into the Bay of Fundy from the Caledonia belt of southern New Brunswick, underlies the Gulf of Maine, and re-emerges onshore in the Boston area of southeastern New England (Thompson et al. 2010).
The definition of Ganderia and Avalonia in the northern Appalachian orogen is based on multiple lines of evidence in-cluding differences in stratigraphy, magmatic and metamor-phic histories, isotopic characteristics, and (increasingly) detrital zircon signatures which can provide information regarding source areas for present components of Ganderia and Avalonia during their pre-Appalachian evolution. The distribution of ages of detrital zircon grains in sedimentary units is a means of comparing units of similar age located in different areas, as well as an indicator of provenance. In ad-dition, the youngest detrital zircon grains give an indication of maximum depositional age, significant in units where other age constraints are minimal or lacking. All three of these applications have relevance in southern New Bruns-wick, and this technique has been applied previously to rock units in that area as well as in adjacent parts of New England and Nova Scotia (Barr et al. 2003a, 2012; Fyffe et al. 2009; Satkoski et al. 2010; Dokken et al. 2018; Ludman et al. 2018). The significance of differences in detrital zircon populations between Ganderia and Avalonia is an ongoing debate, and the database of detrital zircon U–Pb data for both pre- and post-Appalachian strata is growing. The results reported in this paper add to that database, which may ultimately help to resolve questions about the initial relationships among the fault-bounded geological belts of southern New Bruns-wick (Fig. 1a).
As in other Appalachian detrital zircon studies the inter-pretations in the present study have to deal with difficulties in interpreting Meso- to Neoproterozoic zircons that could have multiple sources, for example the commonly encoun-tered 1.4 – 1.0 Ga zircon grains which can be derived from
any number of long-lived magmatic systems in arcs and continental settings associated with the Grenville orogen in either the West African or Amazonian craton. This difficulty is magnified in syn- and post-collisional strata because of potential contributions from the Laurentian craton with its very large area of Grenville-age magmatic activity. In addi-tion, in Paleozoic samples the Proterozoic signatures are ob-scured by extensive contributions from syn-accretional and collisional magmatic systems active through the Ordovician to Devonian history of the Appalachian orogen.
New LA-ICP-MS detrital zircon age spectra are reported here for six sedimentary and metasedimentary rock units in southern New Brunswick. This study includes samples NB12-314 and NB12-315 of Cambrian age in the New River belt (Figs. 2, 3), one sample GM10-01 of uncertain Pre-cambrian age and two samples NB16-356 and NB16-358 of Neoproterozoic to early Cambrian age from Grand Manan Island (Fig. 4), and sample BL15-01 from the Carboniferous Balls Lake Formation near the city of Saint John (Fig. 5). The new data are compared to previously published data, and in combination, shed light on stratigraphic and terrane relations in the area.
METHODS
Detrital zircon U-Th-Pb laser-ablation, inductively cou-pled plasma mass spectrometry (LA-ICPMS) analyses were conducted at the Texas A & M University R. Ken Williams Radiogenic Isotope Geosciences Laboratory (samples GM10-01, NB12-314, and NB12-315) and the University of New Brunswick (samples BL15-01, NB16-356, and NB16-358).
At Texas A & M University, zircon grains were concen-trated from rock samples using standard crushing and den-sity separation (jaw and disc crusher, Wilfley table, heavy liquids) methods. Zircon grains were separated from other dense minerals by hand-picking in a petrie dish under a bin-ocular microscope, but no further separation was performed on the bulk zircon aliquot recovered from heavy liquids. The bulk zircon aliquot was piled and quartered repeatedly in the petrie dish to obtain a sub-sample of about 1000 grains. This zircon sub-sample was mounted on double-sided tape and encased in a 2.5 cm diameter epoxy disc, along with fragments of NIST 610, NIST 612, one primary reference material (zircon 91500; Wiedenbeck et al. 1995) and two secondary reference materials (zircons R33 and FC-1; Black et al. 2004 and Paces and Miller 1993, respectively). The disk was abraded with 2000 grit sandpaper to expose the interi-or of zircon grains and polished to 0.25 µm on a diamond- suspension lap wheel. LA-ICPMS analyses were conducted
dévonien à titre d’élément détritique le plus récent, mais son âge sédimentaire le situe au Carbonifère d’après les relations établies sur le terrain. Les résultats illustrent la nécessité d’une intégration de plusieurs ensembles de données pour effectuer des interprétations à partir de données provenant de zircon détritique.
[Traduit par la redaction]
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 277
on a ThermoScientific iCAP RQ quadrupole mass spec-trometer running in standard high-sensitivity (STDS) mode connected to an esi/NWR 193 nm 4 ns pulsed excimer laser
system equipped with a two-volume sample cell (Tv2). In-strument settings and run parameters are given in Table A1 and analytical data in Table A2. Data are reduced using Iolite
Bay ofFundy
??
CCFZ
AvaloniaGanderia
KF
FF
CCHFW
BF
BF
OB
F
BBF
SaintJohn
Fig. 3
Fig. 2
Fig. 5
Fig. 4GrandMananIsland
SG
SG
F
SC
A
Almond RoadGroup
M
M
NR
NR
K
B
C
o66 00'
o66 00'
o67 00'
N
0 10 20
km
o45 30’N
o45 N o
45 N
Moncton
SaintJohn
100km
NEWBRUNSWICK
MAINE
Major fault
St. Croix
Fredericton
Silurian - Devonian plutonic rocks
Lower Paleozoic belts Precambrian belts
Mascarene
Annidale
Mainly Carboniferous rocks
New River
Kingston
Partridge Island block
Brookville
Caledonia
SG
SC
F
M
A
NR
K
B
C
Laurentian Realm
Laurentian margin
peri-Laurentian arcs
peri-Gondwanan arcs
Peri-Gondwanan Realm
Ganderia
Avalonia
Meguma
CANADA
NewBrunswick
UNITED STATES
Newfoundland
Nova ScotiaCape
BretonIslandArea of
map in (a)
New England
Quebec
Gulf ofSt. Lawrence
Gulf ofMaine
Atlantic Ocean
65º
70º
55º
50º
45º40º
0 200
km
N
(b)
(a)
PenobscotBay area
Figure 1. (a) Simplified geological map of part of southwestern New Brunswick after Barr et al. (2014c). Boxes indicate the locations of the four areas shown in Figures 2–5 from which detrital zircon ages are presented. Arrow indicates the location of the detrital zircon sample from the Almond Road Group in the New River terrane reported by Johnson et al. (2018). Fault abbreviations: CCFZ, Cobequid-Chedabucto fault zone; CCHF, Caledonia-Clover Hill Fault. (b) Divisions of the northern Appalachian orogen after Hibbard et al. (2006) showing the location of the study area (black rectangle).
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 278
v. 3.5 (Paton et al. 2011) under the U–Pb Geochron4 data re-duction scheme (Paton et al. 2010). Analysis of the primaryreference material, each treated separately as an unknown,indicates an internal analytical reproducibility of U–Pbages to better than 0.7%. The average accuracy of secondary
reference materials (Table A2) is better than 2.25% (FC-1) and better than 1.5% (R33).
For the dating done at the University of New Brunswick (UNB), rock samples were sent to Overburden Drilling Man-agement in Ottawa, Ontario, for electro-pulse disaggregation
F
F
F
F
F
F
F
LON
G
R
EACH
SAIN
T
JOHN
RIV
ER
VictoriaBeach
Greenwich Hill
Lobster
Brook
Public Landing
BeulahCamp
BrownsFlat
CatonsIsland
Belyeas Point
McKeel
Cheyne
Rd.
Settlement
SWF
SWF
SJC
SJC
SJC
ZLI
ZLI
ZLI
ZLI
ZLB
ZLB
ZLB
ZLB
ZLB
ZLB
SJC
SCC
WHEATON BROOK
FAULT
FAULT
BELLEISLE
ZCBvs
ZCBvs
CHBmc
CHBfc
CHBfc
ZCBvs
ZCBvs
ZCBvs
ZCBvs
ZCBvs
ZCBvs
ZCBvs
CHBmc
CHBmc
CHBmc
CHBmc
ZCBFmc
ZCBFmv
NB12-314
ZCBFmv
F
F
FF
F
F
F
F
F
F
SCC
SMvs
SJC SWL
SWSLR
SLR
SLR
SWL
SWL
SW
SW
SWF
SILURIAN
Mascarene Group
Kingston GroupCunningham Creek Fm
Westfield Formation
Williams Lake Formation
basalt and grey shale
grey siltstone/sandstone & dacite
dacitic - rhyolitic volcanic rks
basaltic - dacitic volcanic rks
mafic volcanic rocks/siltstone
Welsford Granite (ca. 422 Ma)
Jones Creek Formation
Long Reach Formation
CHB
CGF
CFH
CFHCGF
Saint John Group
Hanford Brook Formation
Glen Falls Formationquartz arenite
fc-siltstone and fine sandstonemc-sandstone & quartz arenite
dark shale and limestoneForest Hills Formation
EARLY - MIDDLE CAMBRIAN
ZCBFmc
ZCBFmv
ZLB
ZLI
ZCBvs
Belleisle Bay Group (ca. 540 Ma)
Lingley Plutonic Suite (ca. 630-625 Ma)
Lobster Brook Formation (ca. 554 Ma)felsic tuffaceous rocks & qtz-feldspar porphyry
red pyroclastic and epiclastic rocks
mafic volcanic rocks
red and green sedimentary rocks
Browns Flat Formation
Browns Flat Formation
Beulah Camp Formation
NEOPROTEROZOIC
LATE NEOPROTEROZOIC - EARLY CAMBRIAN
0 2.5 km
N
Figure 2. Geological map of the Long Reach area in the New River belt showing the location of dated quartz arenite sample NB12-314. Map is modified from Figure 5 in Barr et al. (2014c).
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 279
and zircon separation. Zircon grains were then hand-picked at Cape Breton University and taken to UNB where they were mounted in epoxy-covered thin sections polished to expose the centres of the zircon grains and imaged using cold cathodoluminescence to identify internal zoning and inclusions. These images were used to select ablation points (30 µm diameter), avoiding any visible inclusions, cracks, or other imperfections. U and Pb isotopic compositions were measured using the Resonetics S-155-LR 193 nm Excimer laser ablation system connected to an Agilent 7700x quad-rupole inductively coupled plasma – mass spectrometer,
following the procedure outlined by McFarlane and Luo (2012) and Archibald et al. (2013). Data reduction was done in-house using Iolite software (Paton et al. 2011) to process the laser output into data files, and further reduced for U–Pb geochronology using VizualAge (Petrus and Kamber 2012). Data were sorted by % concordance (206Pb/238U ver-sus 207Pb/235U), and by the % of radiogenic Pb in the grains as calculated using VizualAge (Table A3, A4).
In all cases we present probability distribution histograms based on 206Pb/238U dates for grains <1000 Ma and 207Pb/206Pb dates for >1000 Ma, and show all grains that are between 95
Beaver Harbour Porphyry (551 Ma)
Blacks Harbour Granite(620 Ma)
Simpsons Island Formation (Cambrian)
Buckmans Creek Formation (Cambrian)
Lancaster Formation (Carboniferous)
Balls Lake Formation (Carboniferous)
gabbro dyke (Mesozoic)
NB12-315
GL West Branch Reservoir Granite & related volcanic rocks and dykes (Silurian)
778
Woodla
nd Cove
Beaver
Harbour
Belleisl
e
Fau
lt
Figure 3. Geological map of the Beaver Harbour area showing the location of dated quartz arenite sample NB12-315. Map is modified from Barr et al. (2014a).
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 280
Low DuckIsland
High DuckIsland
X
X
Fish Head
Hw
y. 776
Flagg Cove
Outer WoodIsland
RockweedPond
North Head
The Dock
Castalia LongIsland
PriestCove
GrandHarbour
RossIslandIngalls
Head
Long PondBay
CheneyIsland
White HeadIsland
WoodIsland
ThreeIslands
TRIASSIC
Fundy Group
PRECAMBRIAN - EARLY CAMBRIAN
PRECAMBRIAN
Stanley Brook Granite
Rockweed Pond, Outer Wood Island andFish Head gabbros (various ages?)
Long Pond Bay Formation
Priest Cove Formation
Ross Island and North Head formations
Great Duck Island and Flagg Cove formations
High Duck Island Granite
Three Islands Granite
Ingalls Head Formation
Thoroughfare Formation
Kent Island Formation
Normal fault
Strike-slip fault
Thrust fault
Previously dated site
This study
K
KK
XX
The Thoroughfare
The Thoroughfare
KentIsland
2 3
km
10
GreatDuckIsland
GRAND MANAN GROUP
*
*
*
*
* *
<588 Ma
618 ± 3 Ma
NB16-358
*
***
*
*
539 ± 3 Ma
547 ± 1 Ma
535 ± 2 MaCASTALIA GROUP
618 ± 3 Ma
611 ± 2 Ma
Nantucket Island
GM10-01NB16-356
VL2001-10<574 ± 7 Ma>535 ± 2 Ma(Fyffe et al. 2009)
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 281
also commonly the most deeply colored in shades of pink and purple or tan. Other large (100–150 µm long), more elongate zircon grains show light tan color. Relatively rare, small (50–100 µm long), colorless crystals are acicular with sharp corners and tips.
A large percentage of the grains are discordant, and abla-tion profiles are consistent with Pb-loss being the dominant cause of discordance, as opposed to zircon grains with multi-ple age components. The main population of grains has ages between 480 and 540 Ma, with only four older grains be-tween 1 and 3.2 Ga (Figs. 6a, b). Three grains have 206Pb/238U ages of ca. 450 Ma but they do not overlap within error and all are less than 98% concordant, our cut-off for calculating concordia ages as mentioned earlier, likely because of Pb loss. In contrast, a few grains have ages between 480 and 500 Ma that overlap within error, and three of these grains produce a calculated concordia age of 487.5 ± 13 Ma with very high MSWD of 15 and probability near zero. Using only two grains produces a calculated concordia age of 485.8 ± 19 Ma with a slightly better MSWD of 10.7 and probability of 0.001. The weighted mean of 7 grains between 475 and 495 Ma is 486.8 ± 6.1 at 95% confidence with MSWD = 2.6, and probability = 0.015 (Fig. 6a, inset). Overall, we consider that the best estimate of the maximum depositional age for the sediment is ca. 487 Ma (late Cambrian to Early Ordovician).
This age, although not well constrained, is considerably younger than the age of 508.05 ± 2.75 Ma reported for an ash bed in the Hanford Brook Formation in the Somer-set Street section in the city of Saint John (Landing et al. 1998; Schmitz 2012). Based on fossils, the age of the Han-ford Brook Formation spans the traditional early to middle Cambrian boundary, or in newer time scales, the boundary between Series 2 and 3 (Palacios et al. 2016) at about 509 Ma (Cohen et al. 2013 updated 2018).
SAMPLE NB12-315 - BUCKMANS CREEK
Geological setting
The Buckmans Creek Formation (e.g., Currie 1988) in the Beaver Harbour area of the New River belt (Fig. 3) is an assemblage of fault-bounded and internally faulted sedi-mentary and mafic volcanic rocks that are in places fossilif-erous. They have been correlated with the Saint John Group of the Saint John area (Fig. 5), implying a link between the New River and Caledonia belts (e.g., Currie 1988; Tanoli and Pickerill 1988; Landing 1996; Johnson 2001; Landing et al. 2008). Landing et al. (2008) assigned these Cambri-an rocks to the marginal platform of the late Proterozoic to early Paleozoic Avalon microcontinent. They identified the lower Cambrian Chapel Island and Random formations in the Buckmans Creek area, unconformably overlain by mafic
and 101% concordant. To determine the youngest age rep-resented in each sample we use only clusters of more than 3 grains with ages that overlap within error and are 98–101% concordant. Using only near-concordant grains that overlap within error is a conservative approach which serves to re-duce the possibility of misrepresenting the maximum dep-ositional age as too young by using single grains that may have experienced Pb loss (Dickinson and Gehrels 2010).
For each dated sample, the geological setting is described, followed by the results and interpretation. A subsequent Discussion deals with the oveall implications of the new data.
SAMPLE NB12-314 - CHEYNE SETTLEMENT ROAD
Geological setting
Quartz arenite sample NB12-314 was collected from an outcrop on Cheyne Settlement Road in the Long Reach area of the New River belt (Fig. 2). Cheyne Settlement Road crosses an enclave of Cambrian rocks, one of several such occurrences in the Long Reach area (Fig. 2). The Cambrian rocks overlie Late Neoproterozoic to early Cambrian vol-canic rocks of the Belleisle Bay Group and have been cor-related with the Saint John Group (Fig. 2). Matthew (1891) discovered the acrotretid brachiopod Linnarsonnia misera in grey sandstone at Belyeas Landing (now the “Public Landing” shown on Figure 2) about 600 m east of the sam-pled quartz arenite and Yoon (1970) later discovered trilo-bites at the same location which he suggested are consistent with a late early Cambrian age, consistent with the work of Boyce and Johnson (2004) based on newly collected mate-rial. Small black phosphatic shells tentatively identified as L. misera (R. Miller, personal communication, 2001) werediscovered also in a sequence of dark grey shale, siltstoneand very fine-grained, micaceous sandstone on Cheyne Set-tlement Road about 1.2 km west of Public Landing. Johnson(2001) assigned all of the rocks within the enclave, includ-ing the quartz arenite unit sampled for dating in the presentstudy, to the Hanford Brook Formation of the Saint JohnGroup (Fig. 2).
The dated sample is grey medium-grained quartz arenite. It is dominated by subangular to subrounded quartz grains and less than 10% silt/clay matrix. Feldspar, spherulitic vol-canic, and quartzite clasts occur rarely.
Results
Zircon grains separated from sample NB12-314 display a wide range of sizes, morphologies, and colors. Most grains have abraded corners and edges and are rounded. The larg-est (~150 um diameter) and most highly rounded grains are
Figure 4. (previous page) Geological map of Grand Manan Island showing the location of dated samples NB16-356, NB16-358, and GM10-01. Map is modified from Fyffe (2014).
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 282
Near the mouth of Buckmans Creek, the formation is sep-arated from the plutonic rocks of the Beaver Harbour por-phyry by a reverse dip-slip fault (Bartsch 2005). The Beaver Harbour porphyry yielded a U–Pb zircon age of 551 ± 1.2 Ma (Barr et al. 2014a). On its northwestern margin, the forma-tion is in faulted contact with the ca. 620 Ma Blacks Harbour granite (Barr et al. 2003b; Bartsch 2005).
Dated quartz arenite sample NB12-315 is from the unit assigned to the Random Formation by Landing et al. (2008). The sample is light grey and consists of recrystallized quartz grains that are sutured and polygonal in places. It contains rare felsic volcanic and quartzite clasts, and almost no matrix.
Results
A total of 203 zircon grains were analyzed from sample NB12-315. The main population has ages from 510 to 590 Ma (Figs. 6c, d). Other grains give an almost continuous range of ages from 1 Ga to 2 Ga and a few grains lie between 2 and 3.2 Ga. The youngest 4 grains that overlap within
volcanic-dominated rocks which Landing et al. (2008) as-signed to the “Wade’s Lane Formation”. This name appears to be an incorrect transcription of “Waites Lane” which is shown on road signs in the area and on topographic maps.
Landing et al. (2008) reported that the presence of late early Cambrian trilobites and small shelly taxa in the lowest part of their “Wade’s Lane Formation” demonstrates a hiatus between rocks that they assigned to the Random Formation and those of their “Wade’s Lane Formation”. They interpret-ed the volcanic rocks in the Beaver Harbour section as the result of latest early to middle middle Cambrian pyroclastic volcanism, one of three known volcanic centers that extend-ed 550 km along the northwest margin of the Avalon micro-continent. According to Landing et al. (2008), the volcanic rocks are overlain by grey-green mudstone and limestone of the Fossil Brook Member and black mudstone of the upper Manuels River Formation. However, given the uncertainty of long-distance correlations in a complex orogen, we con-tinue to use the earlier established name Buckmans Creek Formation collectively for all these rocks.
Quaco Formation: red-brown conglomerate,sandstone, mudstone
Cumberland Group: Lancaster Formation: greysandstone, siltstone, minor conglomerate
TRIASSIC
LATE CARBONIFEROUS (Pennsylvanian)
Cumberland Group?: Balls Lake Formation:conglomerate, sandstone, mudstone
LATE DEVONIAN-EARLY CARBONIFEROUS (Mississippian)
Taylors Island Formation/West Beach Formation
Lorneville Group
Granitoid tectonite interlayered with Lorneville Group
Tiner Point Complex
Granitoid tectonite: leucotonalite(l)/alkali-feldspar granite(a)/quartz monzodiorite(q) with rare enclaves of metasedimentary rock
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<409 Ma
Figure 5. Geological map of the Saint John area showing the location of dated sample BL16-01, Map is modified from Park et al. (2014).
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 283
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Figure 6. Probability density plots and histograms for U–Pb data: (a) Sample NB12-314; (b) Expanded view of the data be-tween 400 and 650 Ma for sample NB12-314; (c) Sample NB12-315; (d) Expanded view of the data between 400 and 650 Ma for sample NB12-315; (e) Sample GM10-01. Inserts in (a) and (c) show weighted mean ages for the youngest population of concordant zircon grains in each sample. Data are from Appendix Table A1. Dates with discordance >10% are excluded from these diagrams.
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 284
has ages between 1.9 and 2.2 Ga, with another significant peak at ca. 2.5, and an almost continuous range of ages from 2.5 to 3.2 Ga (Fig. 6e). The youngest two grains are around 1.65 Ga, but they do not overlap within error and cannot be used for a concordia age. Based on these youngest grains the maximum depositional age of the sample may be less than 1.65 Ga but this estimate is not robust. The maximum depo-sitional age based on the detrital zircon populations is better constrained at 1.9 Ga based on the major population peaks.
SAMPLE NB16-356 - LONG POND BAY FORMATION
Geological setting
The Long Pond Bay Formation is exposed along Long Pond Bay and on nearby Wood Island on southern Grand Manan Island (Fig. 4). The Long Pond Bay shoreline section consists of subaqueous hyaloclastic basalt flows, mafic vol-canic breccia, peperitic basalt, green cherty mudstone, and medium- to thick-bedded wacke. On Wood and adjacent islands, amygdaloidal basalt flows, felsic tuff, and arkosic sandstone appear to have been deposited in shallower wa-ter and are associated with coarse-grained gabbroic rocks (Fig. 4). A sample from a rhyolitic tuff or high-level intru-sion from Wood Island yielded few zircon grains that were interpreted by Miller et al. (2007) to indicate a maximum depositional age of ca. 588 Ma. The relatively undeformed features of the unit and its lithological similarities to Siluri-an units of the Mascarene terrane on the mainland (McLeod et al. 1994) led to the assumption of a Silurian age (Miller et al. 2007). However, Fyffe (2014) subsequently interpreted the Long Pond Bay Formation to be part of the Ediacaran–Cambrian Castalia Group, together with the Priest Cove Formation dated at 539 ± 3 Ma by Miller et al. (2007). Fyffe (2014) correlated the Long Pond Bay Formation with the Simpsons Island Formation in the New River terrane on the mainland which also yielded an age of 539 ± 4 Ma (Barr et al. 2003b).
Dated sample NB16-356 is from a grey sandstone unit in the Long Pond Bay shoreline section (Fig. 4). It is imma-ture and matrix-supported and consists of angular quartz and less abundant plagioclase grains in a fine matrix of clay (sericite) and silt. Detrital muscovite and biotite altered to chlorite are also present.
Results
In this sample only 64 out of 145 grains are between 95 and 101% concordant and a further 22 grains are between 90 and 95% concordant. The largest population of zircon grains in sample NB16-356 is in the range between 690 and 600 Ma, with minor populations at around ca. 790 Ma, 1.1–1.2 Ga, and a few grains between 1.5–2 Ga (Figs. 7a, b). The concordia age of the youngest three grains that over-lap is 614.6 ± 6.1 Ma with MSWD = 5.7 and probability (of concordance) = 0.017. The weighted mean of the youngest
error have a calculated concordia age of 518.4 ± 2.8 Ma with MSWD = 6.7 and probability = 0.010. The calculat-ed concordia age with 5 overlapping grains including one that is more discordant is 518.3 ± 4.7 Ma with much higher MSWD of 12.0 and lower probability of 0.001. The weighted mean of the same 5 grains is 517.2 ± 2.7 at 95% confidence with MSWD = 0.41 and probability = 0.80 (Fig. 6c, inset). Hence the maximum depositional age for this sample is in-terpreted to be ca. 517 Ma (Cambrian series 2; Cohen et al. 2013, revised 2018).
SAMPLE GM10-01 - THE THOROUGHFARE FORMATION
Geological setting
The Thoroughfare Formation of Grand Manan Island is exposed on Ross, Nantucket, and White Head islands off the southeastern coast (Fig. 4). It is composed of very thick- to thin-bedded, locally cross-bedded, white to light grey quartzite interbedded with grey to black carbonaceous shale. Where exposed on the western shore of The Thor-oughfare, the contacts between the formation and volcanic sequences of the Priest Cove Formation are highly sheared and interpreted as thrust faults based on the presence of low-angle cleavages in the vicinity of their mutual bound-aries (Fyffe 2014). The inferred age of The Thoroughfare Formation is late Proterozoic as suggested by Alcock (1948) who correlated the quartzite with quartzite interstratified with platformal stromatolitic carbonates of the Late Pro-terozoic Green Head Group in the Saint John area on the New Brunswick mainland, although the latter unit does not include carbonaceous shale and The Thoroughfare Forma-tion lacks carbonate rocks, so the only rock type in common is the quartzite itself. The Thoroughfare Formation could be correlative with the Hutchins Island Quartzite in Penobscot Bay, Maine (Fig. 1b) which also has an inferred late Protero-zoic age (Reusch et al. 2018).
The dated quartzite sample consists of recrystallized quartz grains that are rectangular and elongate parallel to a weak foliation. Granular quartz around the larger grains suggests that brittle deformation may have overprinted ear-lier ductile structures. Rare muscovite and tourmaline are also present.
Results
Sample GM10-01 is distinctive in that it contains only Pa-leoproterozoic and older zircon grains that are much older than the inferred Late Proterozoic stratigraphic age. Its de-trital signature is unlike any others yet seen in New Bruns-wick, including the nearby Flagg Cove Formation (Fig. 3; Fyffe et al. 2009), but like those from samples from Georges Bank and Penobscot Bay inferred to represent sediments deposited on the West African Craton (Kuiper et al. 2017; Reusch et al. 2018). The biggest population of zircon grains
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Figure 7. Probability density plots and histograms for U–Pb data: (a) Sample NB16-356; (b) Expanded view of the data be-tween 540 and 840 Ma for sample NB16-356; (c) Sample NB16-358; (d) Expanded view of the data between 300 and 900 Ma for sample NB16-358; (e) Sample BL15-01; (f) Expanded view of the data between 350 and 800 Ma for sample BL15-01. Note that the expanded-scale diagrams in (b), (d), and (f) have different scales. Inserts in (a), (c), and (e) show weighted mean ages for the youngest population of concordant zircon grains in each sample. Data are from Appendix Table A1. Dates with discordance >10% are excluded from these diagrams.
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Based on these data, the maximum depositional age for this sample is interpreted to be ca. 580 Ma, similar to that of the Long Pond Bay Formation as determined by Miller et al. (2007). This age is consistent with the suggestion by Fyffe (2014) that the volcanic rocks of the Ross Island Formation represent a proximal facies of the Priest Cove Formation.
SAMPLE BL15-01 - BALLS LAKE FORMATION
Geological setting
The Balls Lake Formation is a coarse clastic sedimentary unit in the Saint John area that is interpreted currently as the lower unit of the Upper Carboniferous Cumberland Group (Fig. 5). However, traditionally it was included in the Mispec Group as the middle formation, underlain by basal-tic and sedimentary rocks of the West Beach Formation and overlain by plant-bearing lithic arenite of the Lancaster For-mation. The sequence was considered conformable and the entire group regarded as Mississippian(?) to Pennsylvanian or Pennsylvanian based on plant remains in the Lancaster Formation (e.g., Hayes and Howell 1937; Alcock 1938). Plint and van der Poll (1982) reassigned the Balls Lake and Lancaster formations to the Cumberland Group and Park et al. (2014) showed that the West Beach Formation and the laterally correlative(?) Taylors Island Formation are part of the allochthonous Partridge Island block and not part of the stratigaphy of the Cumberland Group (Fig. 5). In the Calvert Lake area southeast of Saint John, rocks of the Partridge Is-land block are contained in a klippe, preserved in a synform in the Balls Lake Formation that plunges gently west-south-west. The conglomerate–sandstone–mudstone sequence of the surrounding Balls Lake Formation is overturned to the south in the footwall of the Calvert Lake klippe along its southern contact, consistent with thrust transport toward the south-southeast. The Balls Lake Formation has no direct biostratigraphic controls on its age.
The dated sample is typical reddish-grey sandstone from the Balls Lake Formation in the overturned section on Bayshore Drive. It contains subangular quartz and pla-gioclase in a sericitic matrix that contain abundant carbon-ate cement. The quartz grains are angular to subangular and varied in size and shape. Detrital muscovite and opaque phases are abundant.
Results
The largest populations of zircon grains in sample BL15-01 are in the range between ca. 430 and 390 Ma (Figs. 7e, f). Smaller groups of ages occur at ca. 550 Ma, 600 Ma and 1 Ga, with a few older grains between 1 Ga and 2 Ga. The youngest 5 grains that overlap within error have a calculat-ed concordia age of 397.3 ± 1.9 Ma with MSWD= 5.0, and probability (of concordance) = 0.025. The weighted mean of the same 5 grains is 396.5 ± 1.9 Ma at 95% confidence with MSWD = 0.78 and probability = 0.54 (Fig. 7e, inset).
6 grains that overlap within error is 614.7 ± 4.6 at 95% con-fidence with MSWD = 0.67 and probability = 0.64 (Fig. 7a, inset). The interpreted maximum depositional age for this sample is therefore < 614 Ma. This result does not tighten the limited constraints on the depositional age of the Long Pond Bay Formation, previously suggested to be <588 Ma (Miller et al. 2007). However, the similarity of the dates from the youngest detrital grains to the U–Pb (zircon) ages of 617.6 ± 3.2 Ma and 618.3 ± 2.8 Ma for two tuffaceous samples from separate locations in the nearby Ingalls Head Formation (Fig. 4) suggest that the Ingalls Head Formation was the source of the detrital grains. The result is consistent with the inclusion of the Long Pond Bay Formation in the upper part of the Neoproterozoic to Lower Cambrian Casta-lia Group (Fyffe 2014).
SAMPLE NB16-358 - ROSS ISLAND FORMATION
Geological setting
The Ross Island Formation underlies the greater part of Ross and White Head islands near the southeastern coast of Grand Manan (Fig. 4). It comprises interstratified plagioclase-phyric mafic and intermediate flows and brec-cias intruded by numerous diabase dykes. The flows are locally pillowed and interbedded with green laminated silt-stone. They range from basalt to andesite based on chemical composition, and are calc-alkalic, formed in a volcanic arc setting (Hilyard 1992; Hewitt 1993; Hodgins 1994; Pe-Piper and Wolde 2000; Black 2005). The Ross Island Forma-tion appears to be truncated by faults that separate it from quartzite of The Thoroughare Formation on the northern tip of Ross Island and western tip of White Head Island (Fig. 4). The formation had no previous age constraints but was assumed to be part of the Precambrian to early Cambrian Castalia Group (Fyffe 2014).
Dated sample NB16-358 is dark grey laminated siltstone that occurs in peperitic relationship with basalt near the fer-ry terminal on the western shore of White Head Island. The sample is fine-grained and contains abundant plagioclase. Its swirly matrix contains abundant sericite and has an ash-like appearance.
Results
NB16-358 is very poor in zircon and only had 25 grains an-alyzed, 20 of which are betwee 95 and 101% concordant. The largest populations of zircon grains are in the range between ca. 580 Ma and 630 Ma, with a small group at ca. 700 Ma, and a few grains between 1 and 2 Ga (Figs. 7c, d). A single grain at ca. 320 Ma is not considered to be a reliable indica-tor of maximum depositional age. The concordia age of the youngest three grains that overlap is 585.5 ± 8.4 Ma with MSWD = 2.6 and a probability (of concordance) = 0.11. The weighted mean of the same four grains is 580 ± 11 at 95% confidence with MSWD = 0.26, and probability = 0.86.
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ATLANTIC GEOLOGY · VOLUME 55 · 2019 287
Based on these data, the maximum depositional age for this sample is interpreted to be ca. 396 Ma, much older than the inferred Late Carboniferous depositional age for the forma-tion based on field relationships. The lack of Late Devonian–Early Carboniferous ages indicates that the Partridge Island block, which contains volcanic and plutonic rocks of that age, was not providing debris to this unit of the Balls Lake Formation. The Middle Devonian – Silurian zircon grains in the sample could have been derived from any number of plutonic suites both locally and farther afield.
DISCUSSION
Depositional ages
The depositional ages of all six samples included in this study are equivocal based on other evidence, and hence the maximum depositional ages described above based on the youngest zircon populations are potentially important. However, as in all detrital zircon studies, the data are viewed in combination with field and other evidence because of the potential for Pb loss which can move zircon ages to younger points along concordia (e.g., Dickinson and Gehrels 2010), as well as the possibility of inclusion of second-cycle detritus or lack of zircon sources close in age to the deposition of sediment. However, even with these caveats in mind, the de-trital zircon U–Pb data provide valuable information about sedimentary provenance and maximum depositional ages. The samples are discussed here in reverse age order.
The Silurian and younger populations present in sam-ple BL15-01 from the Balls Lake Formation include prom-inent populations of Early and Middle Devonian zircon grains but no younger grains, although the depositional age of the Balls Lake Formation is Carboniferous based on stratigraphic and field relationships (e.g., Park et al. 2014). A similar pattern of Carboniferous units with De-vonian zircon grains as their youngest populations was found in a study in the southern Appalachian orogen by Thomas et al. (2017) in which several Pennsylvanian units contain significant Devonian zircon populations but no younger grains. These well-documented examples are a reminder that “maximum deposition ages” provide only an upper limit on stratigraphic age. Pre-Devonian zircon grains are sparse in sample BL15-01 (Figs. 7e, f) and could be evidence for either Gondwanan or Laurentian source areas but could also represent recycled detrital mate-rial from multiple sources.
Cheyne Settlement Road sample NB12-314 contains a significant Cambrian zircon population with a maximum depositional age of ca. 487 Ma and, therefore, latest Cam-brian or younger (Figs. 6a, b). This maximum age is younger than the broadly “middle Cambrian” age generally assigned to the Hanford Brook Formation based on fossils and a U–Pb zircon date of 508.05 ± 2.75 Ma from an ash bed in the city of Saint John (Landing et al. 1998; Schmitz 2012). Although more work needs to be done in order to investi-
gate this apparent age enigma, it is possible that the Cheyne Settlement Formation is correlative instead with the Snider Mountain Formation in the Almond Road Group which oc-curs in the New River belt to the northeast (Fig. 1a). The youngest zircon population in quartz arenite in the Snider Mountain Formation is ca. 530 Ma, and the age of the up-per sequence that contains feldspathic quartz arenite near its base is constrained by a cross-cutting pluton that gave an age of 475.4 ± 1.6 Ma (Johnson et al. 2018). It is possible that the Cheyne Settlement sample exemplifies the grad-ual younging of quart arenite deposition within the same unit outward from the platform during protracted rifting and opening of the ocean basin along the Gondwanan margin as illustrated by Johnson et al. (2018).
The sample from Buckmans Creek (Fig. 3) also has a sig-nificant Cambrian zircon population but the youngest pop-ulation (maximum depoisitional age) is older at ca. 517 Ma (Cambrian series 2). Landing et al. (2008) interpreted the dated quartz arenite unit at Buckmans Creek to be part of the Random Formation. The age of that formation in the Saint John area (where it is historically known as the Glen Falls Formation) is constrained by volcanic ash beds with ages of ca. 528 Ma in the underlying Ratcliffe Brook Forma-tion and ca. 508 Ma in the overlying Hanford Brook Forma-tion. Hence the maximum depositional age of 517 Ma for sample NB12-315 is consistent with these age constraints.
In contrast to these early Paleozoic samples, the samples from the Long Pond Bay and Ross Island formations (Figs. 7a–d) do not have Cambrian or younger zircon grains and hence their maximum depositional ages based on zircon data alone appear to be Neoproterozoic. The data are broad-ly consistent with previous interpretations of these units as Neoproterozoic but do not narrow down the depositional age greatly, especially for the Long Pond Bay Formation, due to the small number of zircon grains that yielded concordant results. However, the results are consistent with the inter-pretations of Fyffe (2014) who included the Long Pond Bay Formation in the upper part of the Neoproterozoic to Lower Cambrian Castalia Group and suggested that the volcanic rocks of the Ross Island Formation are a proximal facies of the Priest Cove Formation of the Castalia Group (Fig. 4).
Provenance implications
To facilitate comparison of datasets of various sizes, data from the present study together with previously published detrital age data for samples from Avalonia and Ganderia in southern New Brunswick are displayed on probability plots normalized for the number of dates (Figs. 8, 9). Because older grains are typically much less abundant than Ediacaran grains and hence tend to be produce less prominent peaks on the probability plots (Fig. 8), the normalized plots in Figure 9 were made using only dates older than 900 Ma. Except for three samples (NB06-232, NB12-314, and NB16-358) in which the number of grains with dates >900 Ma is small (<10), the data give reasonable signatures for comparison of Mesopro-terozoic and older zircon signatures among samples (Fig. 9).
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ATLANTIC GEOLOGY · VOLUME 55 · 2019 288
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Figure 8. Normalized probability distribution for the six detrital zircon samples of this study in comparison to other samples from southern New Brunswick from Barr et al. (2012, 2014b), Johnson et al. (2018), Fyffe et al. (2009), and Satkoski et al. (2010). Data are normalized against the total number of concordant dates for each sample.
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ATLANTIC GEOLOGY · VOLUME 55 · 2019 289
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Detrital Zircon Age (Ma)
Figure 9. Normalized probability distribution using only ages >900 Ma for the six detrital zircon samples of this study in comparison to other samples from southern New Brunswick from Barr et al. (2012, 2014b), Johnson et al. (2018), Fyffe et al. (2009), and Satkoski et al. (2010). Data are normalized against the total number of concordant dates >900 Ma for each sample.
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With the exception of sample GM10-01 from The Thor-oughfare Formation, all of the samples are characterized by prominent Ediacaran peaks in zircon ages (Fig. 8). Such peaks are characteristic of sedimentary rocks from Gondwana- derived terranes and reflect the widespread pan-African igneous activity related to the assembly of the Gondwa-nan continent (e.g., Satkoski et al. 2010; Pollock et al. 2009, 2015; Dokken et al. 2018; Ludman et al. 2018). It is difficult to assess the significance of the variations in the position of the Ediacaran peak or of the spread in Ediacaran ages in terms of specific provenance areas in Gondwana because even samples from a single belt or stratigraphic unit can dis-play significant differences, as has been documented in the Ganderian parts of New Brunswick, Nova Scotia, and New-foundland (e.g., Fyffe et al. 2009; Satkoski et al. 2010; Barr et al. 2012; van Rooyen et al. 2019).
In addition to the Ediacaran peak somewhere between 539 Ma and 619 Ma, most samples show a scatter of older Neoproterozoic ages back to about 900 Ma, although such older Neoproterozoic ages are notably absent in the Cheyne Settlement Road sample (Fig. 8). In general, Grenville-age (1.0–1.2 Ga) peaks are not present in the samples of this study or those compiled from previous studies (Fig. 9), indi-cating that Laurentian sources were not significant contrib-utors to these sediments. Also lacking in most samples are prominent “Eburnean” (2.0 –2.2 Ga) peaks, generally con-sidered indicative of African sources. Exceptions include the sample from The Thoroughfare Formation on Grand Manan Island, in which that peak is dominant, and the sam-ple from the nearby Flagg Cove Formation (data from Fyffe et al. 2009) which likely derived sediment from The Thor-oughfare Formation or equivalent units. In general, Gande-rian samples have more abundant Mesoproterozoic peaks than Avalonian samples, a pattern that is generally viewed as indicating Amazonian provenance (e.g., Barr et al. 2014b) but all of the Avalonian samples have some Mesoproterozoic peaks and some Ganderian samples, especially those from Grand Manan Island, have relatively few Mesoproterozoic peaks (Fig. 9).
The interpretation of Mesoproterozoic zircon prove-nance is challenging as illustrated in the Fredericton trough in New Brunswick and Maine northwest of the study area. Although the Fredericton trough is farther outboard of the Gondwanan margin within Ganderia than the current study areas (Fig. 1a), it provides a comparison dataset for areas to the southeast. Ludman et al. (2017, 2018) suggested that the Fredericton trough represents an independent basin that was not linked to the more southern New England ba-sins, and interpreted the detrital zircon signatures as being derived from dominantly Gondwanan sources. In contrast, Dokken et al. (2018) documented more mixed zircon prov-enance signature with significant Laurentian contributions. The differences in detrital zircon signatures are likely the result of along-strike variations in the source terranes, and support interpretations that Ganderia may have been a col-lection of continental fragments that accreted to the Lau-rentian margin at different times rather than forming one
coherent crustal block (Waldron et al. 2014, 2018, 2019; Pothier et al. 2015).
In Avalonia, Barr et al. (2012) noted a change in the provenance of detrital zircon grains through time, Neopro-terozoic units being characterized by lack of zircon grains with ages between 2.2 and 1.9 Ga, with the exception of a small peak at 2.0 Ga in the Neoproterozoic Broad River Group in the Caledonia belt (Fig. 9). By the early Cambri-an zircon grains of this age are more abundant. Fyffe et al. (2009) noted a similar trend in Neoproterozoic to Trema-docian sedimentary units in Ganderia, with 2.2 to 1.9 Ga ages becoming much more abundant overall in Cambrian– Ordovician samples. However, exceptions to the trend occur in Cambrian samples from both Ganderia and Avalonia. For example, a quartz arenite sample from the lower Cambrian Glen Falls Formation (Random Formation of Landing and Westrop 1998) in the Avalonian Caledonia belt (Fig. 8) con-tains few zircon grains ages between 2.2 to 1.9 Ga, and the dominant age population is ca. 537 Ma (Barr et al. 2012). The quartzite sample from the early Cambrian Matthews Lake Formation in the Ganderian New River belt (Fig. 8) also lacks zircon grains with ages between 2.2 and 1.9 Ga and is dominated by a single statistical age population at 539 Ma (Fyffe et al. 2009). The abundant volcanic rocks in the ca. 540 Ma Belleisle Bay Group in the New River belt are the most obvious source of the ca. 539 Ma zircon grains in the Matthews Lake quartzite, and along with the voluminous ca. 540 Ma plutonic rocks in the Brookville belt are the closest possible sources for the ca. 537 Ma zircons in the Glen Falls Formation, although 40Ar/39Ar cooling ages show that the Brookville plutons were not exposed at the time when the Glen Falls Formation was deposited (Dallmeyer and Nance 1992; White 1996).
The absence of Mesoproterozoic and Neoproterozoic zir-con grains in the quartzite samples from The Thoroughfare Formation is intriguing. Grains of those ages form the dom-inant populations in every other sample in this study, and in every other sedimentary sample from the region (Fig. 8). It is one of only 3 northern Appalachian samples known to have this type of signature, one from drill core recovered from Georges Bank, underlying Mesozoic sedimentary rocks (Kuiper et al. 2017) and the other from the Hutchins Island Quartzite in the Islesboro fault block in Penobscot Bay in coastal Maine (Reusch et al. 2018). As noted by Kui-per et al. (2017) and Reusch et al. (2018) these detrital sig-natures, with a predominant population at ca. 2.0 Ga and a small peak between ca. 2.8 Ga and 2.4 Ga, are remarkably similar to that of the Paleoproterozoic Taghdout Quartzite in Morocco on the West African craton. Similar peaks are also present in the spectrum for the Flagg Cove Formation reported by Fyffe et al. (2009), although that sample also contains abundant Mesoproterozoic, Neoproterozoic, and Paleozoic grains. Given its proximity, The Thoroughfare Formation seems the most likely source of the Paleoprotero-zic grains in the Flagg Cove Formation. The detrital spec-trum is very different from that of the Ashburn Formation of the Green Head Group in the Brookville belt, which like
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other units of that belt (Martinon Formation and Brookville paragneiss) are dominated by Mesoproterozoic zircon grains (Fig. 8). This calls into question the previous correlation (e.g., Alcock 1948) of The Thoroughfare Formation with the Green Head Group and suggests that correlation with the Isleboro fault block in Penobscot Bay may be more likely.
CONCLUSIONS
New U–Pb data from detrital zircon grains in six clastic sedimentary and metasedimentary samples from Ganderian and Avalonian terranes in southern New Brunswick show both similarities and differences in Ediacaran and older age patterns. Like previously published data from southern New Brunswick, four of the samples (BL15-01, NB12-315, NB16-356, NB16-358) have prominent Late Ediacaran to earliest Cambrian zircon age populations, but the position of the modal peak varies from ca. 548 Ma to 618 Ma. The fifth sample (NB12-314) has an early Cambrian peak at ca. 522 Ma, and the sixth sample (GM10-01) has only Paleo-proterozoic peaks (Fig. 8). Some samples show a smatter-ing of ages back to ca. 800, but generally lack 800–1200 Ma zircon grains. The samples vary widely in their abundances of older Mesoproterozoic and Paleoproterozoic grains, and a few Archean zircon grains are present in some samples. No consistent differences are apparent between Avalonian and Ganderian samples. Because Gondwanan sources areas contain a wide range of ages which are broadly similar, com-bined with the many variables inherent in sediment erosion, transport, deposition, and recycling, the use of detrital zir-con age signatures to interpret from which part of Gondwa-na the Gondwana-derived components of the Appalachian orogen were derived may not be possible.
ACKNOWLEDGEMENTS
We thank Adrian Park for collecting the sample from the Balls Lake Formation. We are grateful to Brandon Boucher and Chris McFarlane for assisting Deanne van Rooyen with the U–Pb dating at the University of New Brunswick and for providing invaluable advice in processing and interpret-ing the age data. Brent Miller thanks the laboratory staff at Texas A & M University for their help. Comments and suggestions by journal reviewers Les Fyffe and John Wal-dron were helpful in improving the content and clarity of the manuscript and are much appreciated. This work was fund-ed mainly through research agreements between the Geo-logical Surveys Branch of the New Brunswick Department of Energy and Mines/Department of Energy and Resource Development and Acadia University and NSERC Discovery grants to Sandra Barr.
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Editorial responsibility: David P. West, Jr.
APPENDIX
laser esi/NWR 193 nm 4 ns excimerbackground/washout times 14 s /8 slaser repetition rate 15 Hzspot size/shape 30 µm / circlefluence 3.25 J cm-2
carrier/makeup gas 0.6 l/min He, 0.8 l/min Ar
mass spectrometer Thermo Scientific iCAP RQplasma RF power 1550 Wtotal duty cycle 195 ms
isotopes measured (dwell times in ms)48Ti (10), 88Sr (10), 96Zr (2.5), 179Hf (2.5), 202Hg (10), 204Pb (20), 206Pb (20), 207Pb (50), 208Pb (10), 232Th (10), 235U (20), 238U (10), 232Th16O (10), 238U16O (10)
Table A1. Instrument settings and run parameters for analyses completed at Texas A & M University.
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 295
Tabl
eA2.
U-P
b ge
ochr
onol
ogic
dat
a fo
r sam
ples
GM
10-0
1, N
B12-
314,
and
NB1
2-31
run
at T
exas
A &
M U
nive
rsity
(ana
lyst
Bre
nt M
iller
).
NB1
2-31
4 C
heyn
e Se
ttle
men
t Roa
d (U
TM -
7190
36E,
503
2336
N; G
rid
Zone
19T
)N
B314
a_00
111
5.7
835
434
1.92
1800
05.
20.
130.
0297
0.00
110.
067
0.00
230.
727
0.04
20.
0784
0.00
230.
559
122
816
2055
124
486
1488.2
NB3
14a_
002
99.1
592
354
1.67
1500
04.
850.
210.
0305
0.00
180.
0668
0.00
410.
749
0.05
90.
0811
0.00
220.
560
735
780
110
561
3250
313
89.7
NB3
14a_
003
176
988
534
1.85
9980
4.19
0.24
0.03
780.
0022
0.08
640.
0031
0.94
0.04
30.
080.
0018
0.5
750
4313
3621
672
2349
6.1
1173.8
NB3
14a_
004
59.7
369.
324
1.1
1.53
2200
05.
040.
120.
0266
90.
0004
70.
0576
40.
0008
20.
6583
0.01
20.
0828
30.
0012
0.64
3324
253
2.3
9.2
509
3251
3.2
7.4
512.
97.
299.9
NB3
14a_
005
65.8
710
247
2.87
1400
07.
60.
420.
0289
0.00
110.
0614
0.00
160.
666
0.02
60.
079
0.00
270.
7543
874
576
2164
822
518
1649
016
94.6
NB3
14a_
006
45.7
200.
119
4.9
1.03
6000
03.
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270.
0264
0.00
190.
0595
0.00
740.
658
0.09
70.
0806
0.00
220.
8709
235
527
3757
027
051
260
500
1397.7
NB3
14a_
007
6942
026
11.
6140
000
4.71
0.24
0.02
895
0.00
093
0.06
070.
0021
0.69
80.
031
0.08
380.
0029
0.64
1906
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718
620
2353
718
519
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008
37.7
178.
314
5.1
1.23
2000
03.
490.
160.
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30.
0009
80.
0699
0.00
460.
777
0.04
0.08
130.
0023
0.5
567
1991
013
058
323
504
1486.4
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14a_
009
242.
640
9.3
257.
91.
5963
000
5.57
0.13
0.09
990.
0018
0.12
390.
0023
5.75
80.
120.
338
0.00
480.
4923
0319
2533
2006
2419
3818
1877
2396.9
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14a_
011
65.8
505
256
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2200
05.
860.
230.
0282
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0007
10.
0634
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704
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0806
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150.
5844
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541
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8.9
92.4
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012
174.
410
7328
43.
7826
000
10.7
50.
280.
0673
0.00
160.
0838
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122.
171
0.04
40.
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0.00
290.
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3112
8334
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49.9
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720
5.6
1.21
2190
04.
025
0.09
30.
0261
90.
0005
20.
0582
0.00
120.
669
0.01
50.
0832
80.
0011
0.42
5561
452
2.5
1052
444
519.
19.
451
5.6
6.7
99.3
NB3
14a_
014
193
227
272
0.83
345
1.15
10.
078
0.08
520.
0065
0.31
70.
023
5.05
0.49
0.11
360.
0052
0.5
1650
120
3560
3517
8696
693
3038.8
NB3
14a_
015
560
1178
128
9.20
2390
102.
90.
650.
450.
167
0.02
77.
31.
60.
313
0.01
60.
583
0043
0024
6023
021
0016
017
5279
83.4
NB3
14a_
016
46.5
400
188
2.13
3000
06.
790.
420.
0266
0.00
180.
060.
0023
0.71
0.03
90.
086
0.00
230.
7702
496
531
3558
936
543
2353
113
97.8
NB3
14a_
018
47.4
250
175
1.43
1300
04.
260.
20.
0297
20.
0009
80.
0691
0.00
210.
818
0.02
90.
086
0.00
150.
559
219
886
6360
616
531.
79.
187.7
NB3
14a_
019
181
307
276
1.11
770
1.88
0.11
0.07
020.
0057
0.19
10.
016
3.03
0.41
0.11
020.
0052
0.5
1360
110
2590
3713
2881
672
2950.6
NB3
14a_
021
65.4
249.
323
9.1
1.04
6200
2.93
0.13
0.03
060.
0013
0.06
810.
0026
0.78
0.02
90.
0833
0.00
220.
560
926
850
7758
416
516
1388.4
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14a_
022
21.5
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885
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6490
005.
670.
210.
0273
60.
0008
50.
0606
0.00
130.
724
0.01
80.
0866
90.
0013
0.51
3370
254
517
611
4555
2.1
1053
5.9
7.5
97.1
NB3
14a_
024
44.3
261
173
1.51
1700
04.
960.
20.
0281
20.
0008
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0605
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747
0.01
90.
0899
0.00
190.
4454
405
560
1761
255
566.
311
555.
111
98.0
NB3
14a_
025
37.4
252.
714
3.9
1.76
2460
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950.
180.
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0007
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059
0.00
110.
745
0.01
60.
0912
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0012
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7299
156
515
555
3956
4.7
9.2
563.
17.
399.7
NB3
14a_
026
48.4
246
171.
91.
4310
900
4.68
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10.
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0006
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803
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0013
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0444
611
1363
839
598
9.2
587.
27.
198.2
NB3
14a_
032
6542
723
21.
8421
000
4.76
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790.
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0.60
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026
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610.
0037
0.80
1614
459
028
517
3147
817
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2299.0
NB3
14a_
033
30.9
1610
49.7
32.3
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50.9
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004
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098
0.83
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014
0.09
151
0.00
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5534
752
1354
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431
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28
564.
47.
791.3
NB3
14a_
043
46.8
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715
2.8
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3300
3.39
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0.03
350.
0016
0.07
190.
0025
0.85
40.
029
0.08
650.
0021
0.5
665
3196
870
626
1653
513
85.5
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14a_
045
36.7
216
154.
11.
4095
004.
610.
110.
0258
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0005
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0579
10.
001
0.64
20.
014
0.08
055
0.00
110.
6108
836
516.
210
514
2950
3.3
8.6
499.
46.
899.2
NB3
14a_
046
16.7
134
532.
5320
000
5.9
0.23
0.03
330.
0026
0.06
730.
0026
0.76
0.06
60.
0824
0.00
630.
566
150
844
8057
338
510
3889.0
NB3
14a_
047
155
602
583
1.03
1500
03.
010.
150.
0292
0.00
180.
0633
0.00
650.
740.
10.
0846
0.00
231.
1508
639
581
3662
030
548
4152
414
95.6
NB3
14a_
048
188
290
560
0.52
630
0.97
0.25
0.03
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0025
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052
7.8
1.2
0.12
30.
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575
248
3870
300
2090
210
747
5935.7
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049
53.8
346
217
1.59
3000
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280.
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0008
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120.
0015
0.70
90.
023
0.08
380.
0019
0.65
6474
654
216
640
3154
414
519
1195.4
NB3
14a_
050
51.4
231
166
1.39
5300
3.78
0.11
0.03
245
0.00
10.
0874
0.00
231.
021
0.03
20.
0846
0.00
130.
564
520
1357
4971
316
523.
58
73.4
NB3
14a_
051
2917
698
1.80
1200
05.
120.
720.
0293
0.00
530.
067
0.01
40.
740.
110.
0817
0.00
321.
7202
841
580
100
770
3256
161
507
1990.4
NB3
14a_
052
264
420
490
0.86
830
1.25
0.14
0.08
20.
013
0.30
50.
038
5.6
1.1
0.12
50.
013
0.5
1580
250
3410
210
1820
200
757
7541.6
NB3
14a_
053
472
810
840
0.96
857
1.31
40.
057
0.06
370.
0037
0.27
70.
012
3.52
0.25
0.09
140.
003
0.5
1266
7733
2933
1517
5656
418
37.2
NB3
14a_
054
2414
9.4
91.2
1.64
9300
5.1
0.15
0.02
824
0.00
078
0.05
760.
0013
0.67
20.
017
0.08
460.
0015
0.49
6010
256
315
496
3252
0.9
1052
3.4
8.8
100.5
NB3
14a_
055
294
923
985
0.94
4530
2.27
0.11
0.03
280.
0016
0.09
820.
0071
1.09
0.1
0.08
040.
0028
0.5
653
3115
7013
074
350
498
1777.0
NB3
14a_
056
6218
114
21.
2733
000
5.00
70.
110.
0459
0.00
160.
1666
0.00
344.
120.
150.
179
0.00
460.
590
831
2518
3416
5331
1061
2564.2
NB3
14a_
057
163
810
700
1.16
4800
03.
526
0.09
40.
0252
0.00
067
0.05
940.
0012
0.62
60.
018
0.07
620.
0016
0.71
1841
350
313
589
5149
3.3
1147
3.4
9.6
96.0
±2σ2
207 Pb
/
235 U
206 Pb
/
238 U
±2σ2
Rho3
208 Pb
/2
32Th
±2σ2
±2σ2
%
con
Isot
opic
ratio
sM
easu
red
conc
entr
atio
ns1
Ana
lysis
Id
entif
ier
Cal
cula
ted
age
s (M
a)
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
±2σ2
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
207 Pb
/ 20
6 Pb
208 Pb
/ 23
2 Th±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
207 Pb
/2
06Pb
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 296Ta
bleA
2. C
ontin
ued.
NB3
14a_
058
128.
731
430
01.
0518
802.
187
0.05
80.
047
0.00
120.
1462
0.00
361.
867
0.05
20.
0924
60.
0013
0.5
928
2323
0235
1066
1857
07.
553.5
NB3
14a_
059
27.4
217
7.3
108.
11.
6410
200
5.38
0.18
0.02
741
0.00
069
0.06
090.
0013
0.71
90.
018
0.08
567
0.00
120.
5236
7354
613
623
4854
9.5
1052
9.8
7.4
96.4
NB3
14a_
060
120.
544
3.4
352.
21.
2652
003.
205
0.08
80.
0366
0.00
110.
0931
0.00
321.
141
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90.
0887
0.00
160.
572
722
1482
3677
218
547.
89.
671.0
NB3
14a_
061
105.
324
828
80.
8623
302.
103
0.05
90.
0404
0.00
190.
1334
0.00
511.
728
0.08
90.
094
0.00
240.
580
037
2124
6610
1331
579
1457.2
NB3
14a_
062
73.4
469
356
1.32
1400
04.
490.
370.
0241
0.00
140.
0669
0.00
770.
667
0.06
80.
0732
0.00
260.
548
128
750
3751
539
455
1588.3
NB3
14a_
063
30.4
122
115
1.06
3200
3.37
0.15
0.02
790.
001
0.06
010.
0019
0.72
10.
021
0.08
630.
0018
0.23
3685
155
521
616
5955
113
533.
611
96.8
NB3
14a_
064
375
1945
1700
1.14
5900
03.
650.
110.
0238
90.
0004
70.
0590
50.
0007
50.
596
0.01
50.
0729
10.
0012
0.89
6833
547
7.1
9.3
565
3847
4.4
9.2
453.
67.
395.6
NB3
14a_
065
64.1
381
247.
21.
5419
600
4.74
50.
094
0.02
806
0.00
064
0.05
924
0.00
086
0.67
50.
014
0.08
280.
0014
0.72
0462
555
913
568
3252
2.8
8.8
512.
58.
498.0
NB3
14a_
066
3913
115
00.
8713
000
2.88
0.16
0.02
680.
0012
0.05
940.
0027
0.7
0.03
20.
0861
0.00
230.
3018
705
535
2457
010
053
819
532
1498.9
NB3
14a_
067
18.5
111
621.
7920
000
4.77
0.48
0.02
950.
0015
0.07
380.
0037
0.79
70.
044
0.07
890.
0032
0.5
587
3010
3039
595
2549
019
86.4
NB3
14a_
068
5145
980.
4629
00.
624
0.03
60.
064
0.01
0.55
90.
025
9.5
1.5
0.12
90.
014
0.5
1250
190
4399
2124
3782
779
7832.0
NB3
14a_
070
61.6
225
235
0.96
1500
02.
990.
130.
0281
10.
0009
60.
0626
0.00
20.
749
0.03
0.08
70.
0022
0.60
3742
456
019
682
6956
617
537
1394.9
NB3
14a_
071
140
144
319
0.45
640
0.98
0.1
0.04
910.
0028
0.36
60.
035
5.41
0.61
0.10
440.
0034
0.5
967
5436
9022
1810
120
640
2035.4
NB3
14a_
072
60.9
408
233
1.75
1100
05.
260.
270.
0283
40.
0005
40.
0642
20.
001
0.72
40.
016
0.08
190.
0017
0.73
7672
956
4.8
1174
433
552.
99.
450
7.6
9.9
91.8
NB3
14a_
073
46.1
155.
718
80.
8341
002.
960.
110.
0266
90.
0006
60.
0587
0.00
140.
706
0.01
70.
0872
0.00
150.
3704
538
532
1354
123
541.
810
539
8.9
99.5
NB3
14a_
074
268.
219
3711
451.
6990
000
5.21
0.13
0.02
551
0.00
078
0.06
040.
0018
0.64
60.
022
0.07
790.
0013
0.48
4024
509
1562
470
506
1448
3.5
7.7
65.4
NB3
14a_
075
5124
518
41.
3312
000
4.02
0.19
0.03
016
0.00
099
0.06
970.
0033
0.81
60.
042
0.08
530.
0017
0.5
600
2089
924
604
2252
7.6
1087.4
NB3
14a_
076
171.
712
1065
51.
8521
000
4.63
0.12
0.02
864
0.00
094
0.05
960.
0011
0.58
50.
017
0.07
060.
0019
0.78
5167
457
118
582
3346
7.5
1144
011
94.1
NB3
14a_
077
5826
812
62.
1325
803.
680.
110.
049
0.00
280.
1188
0.00
31.
343
0.04
90.
0829
0.00
160.
596
655
1932
4586
918
513.
59.
659.1
NB3
14a_
078
537
1170
1400
0.84
1560
1.78
50.
063
0.04
330.
003
0.14
990.
0043
1.73
0.07
40.
0834
0.00
180.
585
658
2339
2510
1827
516.
111
50.7
NB3
14a_
079
8851
633
11.
5650
000
4.39
0.14
0.02
992
0.00
079
0.06
840.
0017
0.76
30.
025
0.08
120.
0019
0.5
596
1587
051
575
1450
311
87.5
NB3
14a_
080
19.1
6466
0.97
5100
2.93
0.19
0.02
820.
0016
0.06
790.
0035
0.8
0.04
70.
0858
0.00
250.
556
331
850
2659
626
531
1589.1
NB3
14a_
081
76.8
207.
127
0.9
0.76
5500
2.28
90.
062
0.03
052
0.00
10.
0912
0.00
321.
067
0.03
90.
0848
0.00
140.
560
820
1445
6773
519
524.
78.
271.4
NB3
14a_
082
8840
031
81.
2662
003.
060.
270.
0305
0.00
250.
095
0.01
20.
980.
150.
0746
0.00
240.
560
749
1450
2768
473
464
1467.8
NB3
14a_
083
32.4
168
126
1.33
1050
04.
382
0.11
0.02
733
0.00
057
0.05
90.
0011
0.70
50.
015
0.08
659
0.00
110.
4929
411
545
1155
641
541.
49.
153
5.3
6.7
98.9
NB3
14a_
084
2298
861.
1450
03.
50.
120.
0272
40.
0007
90.
0594
0.00
230.
677
0.02
0.08
380.
0016
0.23
2248
154
316
560
2852
714
518.
79.
898.4
NB3
14a_
085
3291
102
0.89
5200
2.44
0.15
0.03
20.
0016
0.08
480.
0039
1.01
50.
066
0.08
720.
0034
0.5
636
3213
0189
710
3253
920
75.9
NB3
14a_
086
855
1241
2220
0.56
950
1.18
90.
054
0.04
140.
0024
0.21
60.
019
2.59
0.28
0.08
60.
002
0.5
820
4729
0029
1274
7253
212
41.8
NB3
14a_
087
349
350
710
0.49
310
0.87
0.13
0.05
010.
002
0.45
60.
051
71.
10.
1082
0.00
670.
598
838
4010
200
2040
160
661
3932.4
NB3
14a_
089
6514
447
.83.
0143
000
11.7
60.
370.
1516
0.00
370.
2046
0.00
2315
.27
0.31
0.54
10.
0089
0.83
3003
228
5164
2861
1828
3019
2786
3798.4
NB3
14a_
090
2915
610
41.
5090
000
4.31
0.34
0.02
940.
002
0.06
670.
0032
0.78
30.
051
0.08
570.
0048
0.69
5947
858
540
820
3058
630
530
2990.4
NB3
14a_
091
5320
722
00.
9451
000
2.89
0.23
0.02
435
0.00
092
0.06
380.
0022
0.66
90.
049
0.07
670.
0062
0.90
4448
948
618
732
7351
930
476
3791.7
NB3
14a_
092
43.9
194
153
1.27
4300
3.57
60.
110.
0309
0.00
10.
073
0.00
210.
872
0.02
90.
0868
0.00
170.
561
620
1005
3163
615
536.
69.
884.4
NB3
14a_
093
3127
385
3.21
5000
6.7
1.4
0.03
990.
0043
0.08
830.
0098
0.96
0.13
0.07
880.
0028
0.5
791
8413
2023
067
667
489
1772.3
NB3
14a_
094
26.4
418
5.1
102.
41.
8198
005.
980.
150.
0277
90.
0006
40.
0582
60.
0009
90.
696
0.01
50.
0865
60.
0012
0.61
5696
554
1352
932
535.
58.
853
5.1
7.3
99.9
NB3
14a_
095
93.6
343
376
0.91
1640
03.
090.
085
0.02
702
0.00
043
0.05
775
0.00
088
0.67
40.
013
0.08
496
0.00
110.
6155
832
538.
98.
551
233
522.
77.
952
5.6
6.8
100.6
NB3
14a_
096
265
1022
681
1.50
1790
2.85
0.14
0.04
210.
0014
0.12
80.
0062
1.40
30.
086
0.07
980.
0016
0.5
833
2820
4033
883
3649
4.8
9.3
56.0
NB3
14a_
097
5538
420
71.
8670
000
5.02
0.34
0.02
890.
0014
0.06
440.
0031
0.66
10.
025
0.07
640.
0021
0.06
3073
557
528
731
8651
515
474
1292.0
NB3
14a_
098
49.7
132
841.
5782
02.
130.
190.
0733
0.00
60.
209
0.01
82.
930.
390.
0981
0.00
420.
514
3011
028
0034
1342
8860
324
44.9
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
Pb
(ppm
)±2σ2
207 Pb
/ 20
6 Pb±2σ2
207 Pb
/ 23
5 U±2σ2
Ana
lysis
Id
entif
ier
±2σ2
206 Pb
/ 23
8 U±2σ2
%
con
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
±2σ2
207 Pb
/ 23
5 U±2σ2
Rho3
206 Pb
/ 23
8 U
U
(ppm
)Th
(p
pm)
U/T
h20
6 Pb/
20
4 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 297
Tabl
eA2.
Con
tinue
d.
NB3
14a_
099
64.6
333
230
1.45
3700
4.31
0.15
0.02
899
0.00
067
0.06
460.
0022
0.73
60.
022
0.08
350.
0016
0.08
8052
657
813
740
3455
913
516.
79.
592.4
NB3
14a_
100
3018
710
61.
7615
000
5.66
0.44
0.02
750.
0017
0.06
070.
0017
0.70
50.
029
0.08
470.
0024
0.73
3801
754
834
623
6154
117
524
1496.9
NB3
14a_
101
10.9
5240
1.30
1800
03.
470.
270.
0296
0.00
160.
0697
0.00
430.
782
0.05
20.
0819
0.00
230.
559
032
910
3558
630
508
1486.7
NB3
14a_
102
4428
016
91.
6619
000
5.1
0.22
0.02
740.
0011
0.05
940.
0017
0.67
80.
020.
0839
0.00
160.
3686
476
546
2157
463
525
1251
9.4
9.4
98.9
NB3
14a_
103
52.4
184.
420
8.5
0.88
4900
2.95
30.
070.
0271
80.
0005
40.
0598
90.
0009
90.
708
0.01
40.
0856
70.
0012
0.56
6763
542.
111
590
3654
2.9
8.4
529.
96.
997.6
NB3
14a_
104
7.3
105
29.7
3.54
8000
010
.84
0.53
0.02
540.
0013
0.05
790.
0021
0.62
0.01
90.
0781
0.00
170.
0730
491
508
2651
382
489
1248
4.9
1099.2
NB3
14a_
105
27.3
8483
1.01
3100
2.75
0.38
0.03
220.
0022
0.12
30.
019
1.3
0.18
0.07
770.
0025
0.5
641
4419
0037
835
7748
215
57.7
NB3
14a_
106
59.1
325
244
1.33
4100
4.85
0.32
0.02
740.
0009
40.
0602
0.00
130.
694
0.01
70.
0837
0.00
130.
4927
479
546
1860
346
534.
510
517.
97.
896.9
NB3
14a_
107
8032
570.
5621
30.
590.
022
0.15
20.
027
0.65
10.
027
16.9
1.7
0.18
80.
016
0.5
2830
460
4622
3829
0395
1109
8838.2
NB3
14a_
108
137
100
201
0.50
310
0.80
90.
056
0.08
130.
0093
0.44
50.
023
8.3
1.1
0.13
30.
010.
515
7017
040
5383
2220
120
826
7137.2
NB3
14a_
109
250
121
570
0.21
161
0.59
10.
063
0.05
10.
011
0.60
50.
029
10.3
1.3
0.12
40.
014
0.5
1000
210
4514
7224
4011
075
180
30.8
NB3
14a_
110
156
6717
80.
3822
80.
610.
028
0.09
430.
0053
0.62
70.
029
14.4
1.2
0.16
60.
011
0.5
1819
9845
7739
2765
7598
663
35.7
NB3
14a_
111
167
202
336
0.60
1550
1.48
0.36
0.05
010.
0067
0.27
80.
065
41.
20.
0959
0.00
510.
599
013
030
6046
015
0025
059
030
39.3
NB3
14a_
112
179
242
234
1.03
457
1.19
30.
089
0.11
20.
015
0.33
30.
026
5.7
0.83
0.12
050.
0092
0.5
2210
310
3570
4018
8013
073
152
38.9
NB3
14a_
113
640
1100
1570
0.70
605
1.24
90.
056
0.04
820.
0028
0.26
60.
018
3.41
0.42
0.09
420.
0066
0.5
951
5332
5022
1497
9558
038
38.7
NB3
14a_
114
179
1150
530
2.17
1010
03.
660.
890.
0324
0.00
490.
087
0.02
0.76
0.16
0.06
450.
003
0.5
644
9512
8044
056
990
403
1870.8
NB3
14a_
115
64.9
230.
826
0.4
0.89
1460
02.
917
0.07
40.
0269
70.
0005
30.
0583
0.00
130.
686
0.01
70.
0852
90.
0013
0.46
2268
537.
910
529
2352
9.7
1052
7.6
7.8
99.6
NB3
14a_
116
49.2
310.
919
8.9
1.56
400
4.95
0.15
0.02
697
0.00
079
0.05
920.
0015
0.68
20.
018
0.08
430.
0015
0.39
5202
453
816
566
5553
012
521.
69
98.4
NB3
14a_
117
50.2
188.
515
8.1
1.19
600
3.20
70.
087
0.03
421
0.00
087
0.07
960.
0019
0.98
10.
028
0.08
980.
0015
0.5
680
1711
7424
695
1455
49.
279.7
NB3
14a_
118
77.8
132
297
0.44
780
1.22
0.07
90.
0296
0.00
180.
257
0.01
93.
190.
370.
0842
0.00
330.
559
737
3100
130
1389
7952
119
37.5
NB3
14a_
119
132
570
420
1.36
1930
03.
190.
480.
0356
0.00
940.
090.
036
1.06
0.55
0.08
150.
0066
0.5
700
180
1120
2567
020
050
539
75.4
NB3
14a_
120
136
368
309
1.19
1090
2.1
0.12
0.04
520.
0038
0.15
50.
012
1.68
0.18
0.07
940.
0091
0.5
893
7324
0035
997
6549
254
49.3
NB3
14a_
121
5227
213
71.
9958
004.
840.
210.
0347
0.00
160.
0776
0.00
470.
897
0.06
50.
0843
0.00
290.
568
931
1130
120
649
3652
217
80.4
NB3
14a_
122
4324
012
51.
9255
003.
31.
30.
054
0.02
0.12
0.06
41.
310.
740.
0783
0.00
710.
510
6039
016
4026
800
320
486
4260.7
NB3
14a_
123
2616
010
31.
5541
000
3.1
1.4
0.04
10.
017
0.09
60.
061
1.02
0.7
0.07
660.
0062
0.5
810
330
1300
1100
690
330
476
3769.0
NB3
14a_
124
43.8
191.
916
2.3
1.18
8600
3.6
0.11
0.02
945
0.00
10.
0594
0.00
150.
709
0.01
70.
0872
0.00
190.
3942
885
586
2057
127
543.
610
539.
111
99.2
NB3
14a_
125
9126
716
51.
6216
003.
110.
390.
0526
0.00
540.
118
0.01
81.
40.
270.
0869
0.00
860.
510
4010
018
7029
088
011
053
751
61.0
NB3
14a_
126
100
460
420
1.10
1800
03.
040.
140.
0246
90.
0006
70.
063
0.00
290.
610.
027
0.07
080.
0028
0.40
111
493
1370
028
483
1844
117
91.3
NB3
14a_
127
10.3
6133
1.85
3000
04.
250.
50.
0316
0.00
340.
0671
0.00
220.
720.
120.
079
0.01
30.
562
966
840
6955
175
488
7788.6
NB3
14a_
128
3615
710
91.
4460
000
3.18
0.19
0.03
390.
0019
0.06
990.
0022
0.8
0.15
0.07
820.
0082
0.5
673
3692
029
588
7848
550
82.5
NB3
14a_
129
5145
016
72.
6910
0000
6.41
0.33
0.03
30.
0011
0.06
660.
0026
0.72
50.
037
0.07
930.
0028
0.5
655
2180
979
552
2249
217
89.1
NB3
14a_
130
6548
022
82.
1118
000
4.93
0.18
0.02
987
0.00
095
0.05
80.
0011
0.57
10.
022
0.07
10.
0028
0.88
1908
959
519
527
3045
814
442
1796.5
NB3
14a_
131
8841
728
91.
4410
600
3.75
0.28
0.03
340.
0037
0.08
20.
010.
980.
160.
0855
0.00
440.
566
373
1170
210
679
7552
926
77.9
NB3
14a_
132
52.1
220.
617
8.3
1.24
700
3.26
0.15
0.03
132
0.00
099
0.07
480.
0025
0.85
50.
030.
0831
0.00
190.
562
319
1050
6662
616
514.
311
82.2
NB3
14a_
133
4626
6.9
183
1.46
6400
4.49
0.18
0.02
783
0.00
096
0.05
920.
0013
0.65
70.
017
0.08
040.
0015
0.55
4515
855
519
569
3651
2.2
1049
8.2
8.9
97.3
NB3
14a_
134
83.1
362
259.
71.
3921
003.
511
0.09
70.
0342
0.00
110.
0739
0.00
180.
865
0.02
10.
0856
0.00
20.
568
022
1027
4763
212
529
1283.7
NB3
14a_
135
215
450
620
0.73
431
1.24
0.14
0.05
210.
009
0.32
10.
033
4.87
0.82
0.10
960.
0096
0.5
1020
170
3490
3717
5015
066
956
38.2
NB3
14a_
136
4417
3.4
174.
80.
9997
003.
120.
083
0.02
723
0.00
068
0.05
820.
0012
0.66
60.
016
0.08
310.
0014
0.53
8443
754
313
524
4551
7.8
9.8
514.
48.
599.3
NB3
14a_
137
1160
302.
0040
000
4.68
0.38
0.03
880.
0053
0.08
0.00
540.
937
0.06
70.
0855
0.00
260.
577
010
011
8038
670
3552
915
79.0
%
con
±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
±2σ2
Rho3
208 Pb
/2
32Th
±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
±2σ2
207 Pb
/2
06Pb
207 Pb
/ 20
6 Pb
Cal
cula
ted
age
s (M
a)Is
otop
ic ra
tios
Mea
sure
d co
ncen
trat
ions
1
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 298
Tabl
eA2.
Con
tinue
d.
NB3
14a_
138
5929
016
51.
7631
000
3.79
0.69
0.03
720.
0093
0.08
30.
036
0.88
0.36
0.07
820.
004
0.5
740
180
1040
540
620
160
485
2478.2
NB3
14a_
139
45.7
286
176
1.63
2000
05.
110.
260.
0292
0.00
130.
0589
0.00
180.
680.
021
0.08
40.
0014
0.28
9065
458
226
550
3952
612
519.
98.
498.8
NB3
14a_
140
94.2
506
347
1.46
8000
04.
350.
170.
0292
60.
0008
30.
0688
0.00
270.
788
0.03
60.
0828
0.00
250.
558
316
886
7658
920
513
1587.1
NB3
14a_
141
500
386
413
0.93
5900
2.93
0.38
0.12
950.
007
0.25
30.
017
15.0
50.
640.
443
0.03
20.
524
6012
031
8040
2814
4123
6015
083.9
NB3
14a_
142
51.9
373
210
1.78
3000
05.
860.
380.
0281
0.00
170.
0612
0.00
190.
707
0.02
40.
0843
0.00
220.
4907
848
559
3363
625
543
1452
213
96.1
NB3
14a_
143
104
9019
60.
4625
70.
807
0.05
0.11
30.
036
0.43
20.
037.
91.
50.
131
0.02
0.5
2090
610
4023
9421
3015
079
011
037.1
NB3
14a_
144
9416
726
70.
6362
01.
410.
130.
0431
0.00
270.
284
0.02
53.
920.
50.
0973
0.00
420.
585
152
3240
4115
7010
059
824
38.1
NB3
14a_
145
4023
012
51.
8416
000
4.32
0.29
0.03
210.
0028
0.06
480.
0044
0.66
0.06
40.
0743
0.00
460.
7183
748
638
5576
023
513
3846
228
90.1
NB3
14a_
146
310
990
786
1.26
980
2.26
0.12
0.04
320.
0021
0.15
910.
0087
1.72
0.12
0.07
770.
0016
0.5
855
4024
2694
1009
4548
2.1
9.5
47.8
NB3
14a_
147
72.5
295.
520
91.
4126
303.
360.
140.
038
0.00
110.
0996
0.00
381.
213
0.04
80.
0886
0.00
170.
575
422
1605
2480
522
547.
410
68.0
NB3
14a_
148
94.7
446
315.
71.
4123
003.
670.
120.
0325
0.00
120.
0724
0.00
270.
827
0.02
80.
0834
0.00
220.
564
524
973
7661
115
517
1384.6
NB3
14a_
149
38.2
314
8.6
148.
11.
0085
003.
136
0.08
70.
0280
40.
0007
20.
0589
0.00
140.
697
0.01
90.
0853
0.00
140.
5001
025
559
1454
925
536
1252
7.8
8.2
98.5
NB3
14a_
150
50.4
361.
819
1.6
1.89
2100
05.
750.
160.
0285
10.
0006
60.
0621
0.00
110.
727
0.02
0.08
480.
0017
0.76
6035
556
813
672
3755
412
524.
510
94.7
NB3
14a_
151
111.
764
145
71.
4015
000
4.11
50.
076
0.02
647
0.00
045
0.06
155
0.00
098
0.65
10.
016
0.07
670.
0013
0.76
5563
852
88.
965
226
508.
710
476.
37.
993.6
NB3
14a_
152
94.8
684
346.
21.
9833
000
5.62
0.13
0.02
969
0.00
067
0.06
176
0.00
082
0.7
0.01
40.
0823
0.00
150.
7625
137
591
1366
128
538.
68.
550
9.6
8.7
94.6
NB3
14a_
153
157.
796
164
01.
5029
000
4.39
70.
110.
0262
50.
0006
20.
0602
0.00
160.
609
0.01
90.
0734
50.
001
0.53
2445
752
412
601
5048
211
456.
96.
394.8
NB3
14a_
154
101.
679
729
7.1
2.68
6600
6.13
0.17
0.03
630.
0013
0.07
640.
0018
0.82
0.01
90.
0781
0.00
130.
572
125
1094
2760
7.5
1148
4.8
7.7
79.8
NB3
14a_
155
166
430
400
1.08
6000
02.
530.
490.
0394
0.00
960.
118
0.07
1.18
0.46
0.08
510.
0092
0.5
780
180
1350
700
750
170
526
5570.1
NB3
14a_
157
120
738
437
1.69
8000
4.29
0.2
0.03
010.
0018
0.07
460.
005
0.76
30.
068
0.07
370.
0017
0.5
600
3610
2028
570
3545
8.3
1080.4
NB3
14a_
158
24.2
158.
481
.61.
9493
005.
490.
250.
0328
0.00
210.
0693
0.00
360.
837
0.04
70.
0879
0.00
150.
565
141
860
110
613
2554
38.
988.6
NB3
14a_
159
2792
621.
4825
002.
470.
780.
048
0.01
10.
116
0.04
1.41
0.55
0.08
820.
0083
0.5
940
220
1770
2987
024
054
549
62.6
NB3
14a_
160
21.1
316
88.3
3.58
9800
11.2
50.
430.
0260
30.
0008
50.
0574
0.00
130.
634
0.01
70.
0804
0.00
170.
5759
9251
917
497
5049
8.1
1149
8.3
1010
0.0
NB3
14a_
161
82.7
406
288
1.41
9000
03.
830.
130.
0316
0.00
110.
0795
0.00
340.
926
0.04
50.
0853
0.00
170.
562
821
1169
3067
120
527.
710
78.6
NB3
14a_
162
39.3
262
161.
91.
6216
700
50.
160.
0265
70.
0007
40.
0583
0.00
140.
641
0.01
80.
0801
0.00
150.
5349
065
530
1552
753
502
1149
6.6
8.7
98.9
NB3
14a_
163
66.1
313
282
1.11
1070
03.
564
0.07
90.
0254
30.
0005
40.
0588
0.00
110.
650.
013
0.08
013
0.00
120.
4579
106
507.
611
558
3150
8.1
8.2
496.
97
97.8
NB3
14a_
164
7.1
6524
2.71
3600
07.
550.
560.
0282
0.00
210.
0728
0.00
950.
740.
093
0.07
430.
0024
0.5
563
4110
0026
562
5546
214
82.2
NB3
14a_
165
61.5
304
197.
11.
5433
003.
740.
20.
0343
0.00
210.
0758
0.00
260.
873
0.04
0.08
420.
0035
0.5
682
4110
8368
637
2252
121
81.8
NB3
14a_
166
127
600
590
1.02
9000
04.
380.
930.
0266
0.00
220.
065
0.01
70.
646
0.07
0.07
370.
0068
2.40
7898
953
143
910
3250
440
458
4190.9
NB3
14a_
167
69.4
245
244.
11.
0070
000
2.72
0.27
0.03
120.
003
0.06
570.
0021
0.77
80.
050.
0866
0.00
670.
9145
187
620
5979
665
584
2853
540
91.6
NB3
14a_
168
272.
656
240
91.
3713
600
4.8
0.34
0.07
610.
0058
0.11
460.
0036
4.11
0.15
0.26
170.
0057
0.51
5505
514
8011
018
6633
1655
2914
9829
90.5
NB3
14a_
169
176
558
731
0.76
2300
02.
459
0.06
30.
0265
10.
0005
40.
0628
10.
0009
0.71
10.
018
0.08
190.
0016
0.82
6212
452
8.8
1170
232
544.
910
507.
49.
393.1
NB3
14a_
170
164
172
520
0.33
242
0.91
20.
10.
0532
0.00
90.
439
0.03
37.
150.
950.
1165
0.00
880.
510
4017
040
0034
2100
130
708
5033.7
NB3
14a_
171
157.
945
024
81.
8177
12.
322
0.08
80.
0707
0.00
270.
1657
0.00
732.
020.
130.
0887
0.00
280.
513
7950
2497
6411
1339
547
1649.1
NB3
14a_
172
33.2
157
119
1.32
9200
4.11
0.49
0.03
140.
0027
0.08
60.
021
0.25
0.08
340.
0026
0.5
624
5310
7035
670
100
516
1577.0
NB3
14a_
173
166
8516
60.
5114
20.
597
0.05
70.
124
0.04
40.
650.
044
19.6
5.9
0.21
90.
056
0.5
2330
760
4620
100
3020
240
1260
280
47.7
NB3
14a_
174
333
1140
702
1.62
963
2.49
80.
083
0.05
50.
0025
0.14
530.
005
1.64
30.
088
0.08
230.
002
0.5
1080
4822
8036
990
3650
912
51.4
NB3
14a_
175
63.7
162.
417
0.8
0.95
2940
2.19
70.
073
0.04
060.
0012
0.12
690.
0032
1.62
30.
051
0.09
30.
0015
0.5
805
2320
5046
978
2057
3.1
8.8
58.6
NB3
14a_
176
149
883
231
3.82
3600
011
.31.
80.
0698
0.00
250.
0897
0.00
322.
450.
230.
197
0.01
50.
9329
813
6448
1411
6912
4473
1157
7993.0
NB3
14a_
177
64.5
376
253
1.49
1100
04.
530.
160.
0277
70.
0008
20.
0612
0.00
220.
713
0.02
60.
0849
0.00
20.
3448
343
554
1663
437
546
1552
512
96.2
±2σ2
206 Pb
/ 23
8 U±2σ2
%
con
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
±2σ2
207 Pb
/ 23
5 U
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
Rho3
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
207 Pb
/ 20
6 Pb±2σ2
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 299
Tabl
eA2.
Con
tinue
d.
NB3
14a_
178
357
1770
1230
1.44
3600
03.
790.
520.
0313
0.00
510.
084
0.02
60.
750.
170.
0747
0.00
180.
562
299
1040
400
610
140
472
1877.4
NB3
14a_
179
171
674
463
1.46
1370
2.88
70.
10.
0413
0.00
210.
1106
0.00
381.
254
0.07
60.
0824
0.00
30.
581
940
1801
3882
234
510
1862.0
NB3
14a_
180
32.8
177.
713
1.6
1.35
1280
04.
590.
150.
0269
80.
0005
30.
0584
0.00
110.
686
0.01
40.
0856
30.
0012
0.45
1228
653
8.1
1053
341
529.
98.
452
9.6
6.9
99.9
NB3
14a_
181
56.8
203
208
0.98
6700
2.76
0.29
0.02
950.
002
0.07
150.
009
0.85
0.11
0.08
790.
0034
0.5
587
3991
039
619
5354
320
87.7
NB3
14a_
182
133.
983
551
6.4
1.62
8000
04.
510.
120.
0278
80.
0009
40.
0654
0.00
170.
660.
018
0.07
360.
0013
0.5
556
1978
155
514
1145
7.7
8.1
89.0
NB3
14a_
183
87.1
387.
536
8.5
1.05
1200
03.
374
0.09
50.
0258
30.
0006
70.
0598
0.00
170.
671
0.02
10.
0817
0.00
140.
4334
907
515
1358
440
521
1250
6.5
8.1
97.2
NB3
14a_
184
116
147
292
0.50
392
1.14
70.
047
0.04
50.
0026
0.26
90.
017
3.78
0.3
0.10
120.
0033
0.5
888
5132
7011
015
7369
621
1939.5
NB3
14a_
185
156.
710
4866
41.
5819
000
4.39
0.12
0.02
587
0.00
081
0.06
360.
0014
0.63
20.
017
0.07
250.
0014
0.58
8996
651
616
722
4149
7.2
1145
18.
690.7
NB3
14a_
186
50.4
306.
418
2.1
1.68
1030
04.
520.
420.
0303
0.00
270.
079
0.00
430.
889
0.04
60.
0822
0.00
150.
560
453
1170
2764
525
509
8.8
78.9
NB3
14a_
187
115
400
430
0.93
1400
02.
950.
170.
0262
10.
001
0.06
750.
0048
0.73
40.
060.
0795
0.00
430.
552
320
830
140
557
3449
326
88.5
NB3
14a_
188
6228
018
61.
5141
004.
44.
40.
033
0.03
30.
073
0.07
30.
810.
810.
080.
080.
565
065
010
0042
600
600
500
500
83.3
NB3
14a_
189
23.9
95.3
96.2
0.99
5400
3.12
0.14
0.02
711
0.00
091
0.06
270.
003
0.72
70.
034
0.08
460.
0022
0.23
6036
254
118
670
2455
420
523
1394.4
NB3
14a_
190
84.8
534
353.
21.
5114
000
4.81
0.12
0.02
608
0.00
062
0.06
060.
0011
0.66
60.
016
0.07
950.
0014
0.65
9213
452
012
614
3951
7.7
1049
3.1
8.2
95.2
NB3
14a_
191
65.8
484
278.
81.
7421
000
5.35
0.19
0.02
544
0.00
071
0.05
950.
0019
0.63
90.
022
0.07
880.
0019
0.44
9934
508
1457
225
504
1548
911
97.0
NB3
14a_
192
3921
5.1
160
1.34
1440
04.
380.
120.
0265
20.
0005
60.
0584
0.00
120.
663
0.01
40.
0825
60.
0013
0.40
8444
952
911
532
4751
6.3
8.8
511.
47.
699.1
NB3
14a_
193
247
175
460
0.38
240
0.61
90.
054
0.05
930.
0041
0.61
0.04
910
.65
10.
1232
0.00
920.
511
6479
4490
2624
6015
074
853
30.4
NB3
14a_
194
223.
913
3610
271.
3037
000
3.93
70.
10.
0238
40.
0005
50.
0598
0.00
140.
593
0.01
50.
0721
0.00
120.
4379
545
476
1159
150
472.
49.
844
8.8
7.5
95.0
NB3
14a_
195
44.3
162.
417
0.3
0.95
8400
3.13
70.
084
0.02
804
0.00
055
0.06
090.
0019
0.73
40.
023
0.08
737
0.00
130.
2465
725
558.
811
595
2755
411
539.
97.
597.5
NB3
14a_
196
69.7
379
265.
71.
4336
000
4.2
0.19
0.02
842
0.00
086
0.06
190.
0017
0.72
30.
028
0.08
510.
0026
0.70
9512
756
617
664
5755
217
526
1595.3
NB3
14a_
197
252.
879
855
2.7
1.44
2730
2.47
50.
058
0.04
910.
0012
0.13
280.
0033
1.44
10.
041
0.07
872
0.00
120.
596
823
2129
4390
919
488.
47.
153.7
NB3
14a_
198
1200
1260
286
4.41
303
1.5
0.15
0.48
40.
065
0.34
30.
018
7.21
0.54
0.15
80.
011
0.5
7720
860
3636
2821
3148
942
5944.2
NB3
14a_
199
34.1
243
122.
31.
9924
005.
460.
540.
0306
0.00
240.
0827
0.00
670.
932
0.07
0.08
250.
0022
0.5
609
4712
3015
066
636
511
1376.7
NB3
14a_
200
208
400
301
1.33
384
1.53
0.08
10.
0754
0.00
20.
257
0.01
53.
640.
310.
0996
0.00
260.
514
6938
3189
2915
2160
611
1540.2
NB3
14a_
201
62.8
216
243
0.89
1200
02.
740.
170.
0285
0.00
130.
0664
0.00
270.
795
0.03
20.
0876
0.00
230.
3104
085
568
2681
080
593
1854
114
91.2
NB3
14a_
202
56.5
305
242
1.26
2300
04.
184
0.11
0.02
540.
0005
40.
0580
40.
0009
50.
6328
0.01
20.
0793
90.
0011
0.53
9820
650
6.8
1152
130
498.
38
492.
56.
598.2
NB3
14a_
203
154
295
225.
61.
3117
000
4.36
0.32
0.07
50.
005
0.09
770.
0058
3.44
0.23
0.25
720.
0074
0.46
1062
714
6195
1580
110
1512
5414
7538
97.6
NB3
14a_
204
176
402
436
0.92
1360
2.20
40.
091
0.04
346
0.00
10.
1288
0.00
651.
70.
096
0.09
530.
0016
0.5
860
2020
1831
994
3458
6.7
9.3
59.0
NB3
14a_
205
284
748
744
1.01
520
1.81
70.
068
0.04
10.
0028
0.19
370.
0077
2.07
80.
10.
078
0.00
240.
581
354
2767
6411
3933
484
1442.5
NB3
14a_
206
5034
019
71.
7319
000
5.25
0.14
0.02
801
0.00
098
0.06
430.
0019
0.73
90.
025
0.08
320.
0015
0.48
8871
558
1973
932
561
1551
5.3
991.9
NB3
14a_
207
124.
987
846
71.
8836
000
50.
210.
0289
0.00
088
0.06
440.
002
0.66
40.
019
0.07
610.
0016
0.24
6308
757
617
758
6951
612
472.
69.
991.6
NB3
14a_
208
7959
031
01.
9038
000
5.24
0.39
0.02
720.
0017
0.06
230.
0025
0.62
80.
031
0.07
340.
002
0.58
3205
854
334
675
2849
419
457
1292.5
NB3
14a_
209
68.4
311
231
1.35
5400
3.55
50.
094
0.03
230.
0012
0.07
640.
0025
0.88
70.
034
0.08
460.
0016
0.5
643
2310
9433
644
1852
3.7
9.5
81.3
Prim
ary
refe
renc
e m
ater
ial5
9150
0 (n
=32)
15.0
480
.26
30.0
32.
6710
150
9.36
550.
294
0.05
420.
0016
10.
0748
80.
0013
1.85
380.
0381
0.17
962
0.00
246
0.54
9707
810
62.7
6.5
1052
.26.
110
63.3
2.9
1065
.62.
9
Seco
ndar
y re
fere
nce
mat
eria
l(s)5
R33
(n=1
0)43
.15
258.
4821
2.72
1.22
8741
.666
667
4.70
780.
177
0.02
198
0.00
072
0.05
786
0.00
170.
5362
0.01
890.
0671
50.
0011
80.
5580
4342
2.6
3.1
406.
014
.041
7.3
2.6
418.
21.
9
%
con
±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
±2σ2
Rho3
208 Pb
/2
32Th
207 Pb
/ 20
6 Pb±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
±2σ2
207 Pb
/2
06Pb
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 300
Tabl
eA2.
Con
tinue
d.
NB1
2-31
5 Bu
ckm
ans C
reek
(UTM
- 6
7889
4E, 4
9942
91N
; Gri
d Zo
ne 1
9T)
NB3
15a_
0175
.336
330
61.
1921
000
2.92
0.25
0.02
570.
0011
0.06
410.
0014
0.79
30.
016
0.09
270.
0013
0.22
3951
351
321
730
4659
1.9
8.8
571.
27.
696
.5N
B315
a_02
67.2
240.
985
.82.
8159
000
6.67
0.49
0.08
460.
0035
0.12
160.
0023
5.06
40.
096
0.30
950.
0049
0.42
0273
616
4165
1976
3318
2916
1738
2495
.0N
B315
a_03
3732
013
82.
3223
300
4.66
0.36
0.02
880.
0014
0.06
730.
0019
0.82
80.
020.
0925
0.00
140.
0211
745
574
2882
559
613
1257
0.1
8.1
93.0
NB3
15a_
0418
581
223
2.1
3.50
2050
007.
710.
540.
0879
0.00
350.
1229
0.00
144.
987
0.07
60.
3027
0.00
340.
6678
714
1703
6519
9720
1816
1317
0417
93.8
NB3
15a_
0518
.821
778
.32.
7712
300
5.99
0.46
0.02
592
0.00
120.
0616
0.00
190.
745
0.02
10.
0901
0.00
120.
0274
095
517
2463
166
564
1255
6.1
798
.6N
B315
a_06
53.3
135.
637
.93.
5838
000
9.1
0.66
0.15
550.
0065
0.23
930.
0029
19.9
10.
250.
6202
0.00
890.
6014
034
2919
110
3112
2030
8612
3109
3510
0.7
NB3
15a_
0716
.468
.371
0.96
3000
2.27
0.18
0.02
576
0.00
130.
0647
0.00
30.
774
0.03
30.
0892
0.00
190.
0669
106
514
2670
010
058
218
550
1194
.5N
B315
a_08
62.5
109
55.4
1.97
3400
05.
450.
390.
1297
0.00
540.
1737
0.00
2611
.98
0.16
0.50
870.
0072
0.40
9055
624
6496
2588
2526
0212
2650
3110
1.8
NB3
15a_
0959
.441
326
71.
5513
800
3.99
70.
290.
0253
0.00
10.
0596
0.00
130.
703
0.01
50.
0870
20.
0009
10.
1991
273
505
2158
249
539.
69.
153
7.8
5.4
99.7
NB3
15a_
1069
.634
2.2
310
1.10
1690
03.
165
0.23
0.02
581
0.00
110.
0602
0.00
140.
727
0.01
70.
0885
0.00
120.
2993
411
515
2159
452
554
1054
6.8
7.2
98.7
NB3
15a_
1122
851
933
51.
5569
000
5.92
0.42
0.08
130.
0033
0.10
690.
0012
4.62
70.
070.
312
0.00
430.
7021
688
1580
6117
4520
1753
1217
5021
99.8
NB3
15a_
1251
.323
121
11.
0976
003.
270.
250.
0291
10.
0013
0.06
270.
002
0.78
50.
022
0.09
120.
0014
0.00
4182
958
025
678
6959
013
562.
68.
595
.4N
B315
a_13
386
414
310
1.34
7400
04.
489
0.32
0.15
380.
0058
0.18
660.
0016
14.2
0.13
0.54
830.
0057
0.62
1833
2891
100
2710
1427
62.3
8.6
2817
2410
2.0
NB3
15a_
1418
.311
1.8
81.3
1.38
3600
4.07
0.32
0.02
810.
0014
0.05
690.
0016
0.69
80.
022
0.08
770.
0011
0.45
5363
560
2847
565
536
1354
1.8
6.6
101.
1N
B315
a_15
86.6
1081
375
2.88
2900
08.
560.
610.
0284
40.
0011
0.05
762
0.00
079
0.75
80.
013
0.09
510.
0015
0.65
6057
567
2250
830
572.
57.
358
5.8
8.6
102.
3N
B315
a_16
202
247.
919
5.4
1.27
124
1.07
40.
10.
1202
0.00
970.
299
0.01
55.
130.
290.
1245
0.00
360.
4634
2322
9018
034
4983
1834
5175
621
41.2
NB3
15a_
1720
134.
986
.41.
5651
004.
230.
330.
0274
0.00
140.
0586
0.00
190.
701
0.02
30.
0866
0.00
140.
2701
615
546
2751
970
537
1453
5.5
899
.7N
B315
a_19
17.5
157
66.3
2.37
5300
6.73
0.53
0.02
990.
0014
0.05
960.
0019
0.77
50.
023
0.09
460.
0014
0.09
5037
659
528
559
6758
113
582.
48.
110
0.2
NB3
15a_
2048
.820
2.7
191.
71.
0691
003.
290.
250.
0280
30.
0012
0.05
850.
0014
0.72
10.
018
0.08
950.
0012
0.34
4029
755
923
538
5255
011
552.
67.
210
0.5
NB3
15a_
2116
.29
41.6
43.6
0.95
1110
05.
270.
430.
0316
0.00
170.
0598
0.00
220.
793
0.02
70.
0945
0.00
190.
1534
212
628
3458
681
591
1558
211
98.5
NB3
15a_
2217
.534
.843
.80.
7969
004.
530.
450.
0313
0.00
310.
0652
0.00
730.
850.
110.
0923
0.00
210.
8031
105
622
6065
017
059
442
569
1395
.8N
B315
a_23
188.
837
121
6.4
1.71
2030
0010
.29
0.72
0.07
340.
0028
0.08
611
0.00
085
2.75
10.
040.
2282
0.00
290.
7454
191
1432
5313
3819
1341
1113
2515
98.8
NB3
15a_
2425
.389
.169
1.29
6900
7.52
0.57
0.03
031
0.00
140.
0583
0.00
120.
754
0.01
50.
0924
0.00
130.
3037
6660
328
532
4957
1.3
8.5
569.
87.
899
.7N
B315
a_26
86.3
92.2
230
0.40
1420
02.
469
0.18
0.03
153
0.00
120.
0594
0.00
20.
776
0.02
40.
0932
0.00
160.
1107
2562
724
563
7458
214
574.
29.
298
.7N
B315
a_27
127.
620
610
5.3
1.96
1430
0011
.70.
840.
0965
0.00
390.
1166
0.00
165.
031
0.08
70.
3104
0.00
430.
6316
865
1862
7219
0124
1823
1517
4221
95.6
NB3
15a_
2849
.455
.248
.94
1.13
2800
07.
61.
20.
0841
0.00
420.
1114
0.00
44.
020.
170.
2571
0.00
830.
5644
697
1631
7918
1066
1627
3714
7243
90.5
NB3
15a_
2941
.971
.812
30.
5812
800
3.72
0.28
0.02
814
0.00
130.
0594
0.00
140.
742
0.01
50.
0892
0.00
10.
0466
522
561
2557
649
562.
89.
155
0.7
5.9
97.9
NB3
15a_
3084
.910
4.9
74.4
1.41
9200
09.
380.
720.
0966
0.00
410.
1075
0.00
144.
677
0.07
10.
3119
0.00
380.
5657
753
1863
7617
5425
1762
1317
5019
99.3
NB3
15b_
0118
0.3
301
224.
81.
3412
600
4.87
50.
150.
0871
70.
0008
70.
1069
90.
0015
4.49
10.
053
0.30
370.
0039
0.35
5064
816
8916
1749
2717
28.6
9.7
1709
1998
.9N
B315
b_03
11.7
973
44.5
1.64
1790
5.68
0.29
0.02
930.
0011
0.05
790.
0017
0.72
30.
022
0.09
090.
0015
0.33
4725
558
421
502
6755
312
560.
68.
610
1.4
NB3
15b_
0433
1.2
1110
394
2.82
6000
06.
370.
360.
0924
0.00
30.
1025
0.00
242.
910.
120.
2056
0.00
560.
8431
913
1785
5616
6243
1379
3012
0530
87.4
NB3
15b_
0528
.914
5.4
96.4
1.51
2200
4.83
0.21
0.03
020.
0012
0.06
550.
0028
0.8
0.03
80.
0885
0.00
140.
4518
8160
123
756
7259
318
546.
98
92.2
NB3
15b_
0612
7.9
181
144.
81.
2513
700
4.48
50.
140.
0973
0.00
150.
1194
0.00
195.
446
0.1
0.33
050.
0061
0.62
6429
618
7629
1944
2818
9016
1840
3097
.4N
B315
b_07
58.5
308
222.
51.
3810
300
4.67
0.19
0.02
872
0.00
051
0.05
980.
0012
0.76
0.01
40.
0924
50.
0013
0.25
9400
557
210
585
4657
4.8
8.6
569.
97.
599
.1N
B315
b_09
18.7
794
.279
.41.
1930
004.
070.
180.
0261
20.
0008
60.
0578
0.00
170.
668
0.01
80.
0839
0.00
140.
1551
042
521
1750
067
518
1151
9.1
8.2
100.
2N
B315
b_10
29.9
234
112.
82.
0751
006.
980.
560.
0289
0.00
078
0.05
880.
0013
0.75
40.
015
0.09
310.
0017
0.33
0879
657
615
549
4857
0.1
8.6
573.
79.
910
0.6
NB3
15b_
1156
.919
322
00.
8892
003.
013
0.11
0.02
789
0.00
054
0.05
790.
0014
0.72
10.
018
0.09
060.
0015
0.37
8295
655
611
512
5255
011
559
8.9
101
.6N
B315
b_12
237
129.
917
90.
7326
000
2.73
80.
087
0.14
320.
0018
0.18
830.
0028
13.6
10.
190.
5256
0.00
710.
4142
8627
0532
2725
2427
2213
2722
3010
0.0
±2σ2
206 Pb
/ 23
8 U±2σ2
%
con
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
±2σ2
207 Pb
/ 23
5 U
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
Rho3
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
207 Pb
/ 20
6 Pb±2σ2
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 301
Tabl
eA2.
Con
tinue
d.
NB3
15b_
1348
.228
419
81.
4377
004.
870.
170.
0260
60.
0005
20.
0580
70.
0012
0.69
20.
013
0.08
640.
0013
0.26
9366
552
010
535
4053
3.7
7.6
534.
38
NB3
15b_
1423
8.3
315.
725
6.8
1.23
7900
04.
431
0.16
0.09
980.
0015
0.11
930.
0017
5.67
80.
077
0.34
470.
0052
0.50
9396
819
2228
1944
2619
2912
1909
2599
.0N
B315
b_15
70.5
184.
582
2.25
3600
08.
050.
270.
0918
0.00
160.
1127
0.00
174.
939
0.06
40.
318
0.00
430.
3516
189
1774
2918
4127
1808
.111
1780
2198
.4N
B315
b_16
49.9
64.4
34.3
1.88
2700
07.
170.
340.
153
0.00
530.
2191
0.00
6117
.29
0.71
0.57
10.
014
0.75
1016
628
7593
2966
4529
4240
2908
5798
.8N
B315
b_17
22.2
71.8
82.6
0.87
6500
2.85
20.
120.
0286
50.
0008
0.06
0.00
210.
752
0.02
40.
091
0.00
150.
0620
324
571
1658
373
567
1456
1.3
8.9
99.0
NB3
15b_
1850
.220
3.7
78.2
2.60
1270
009.
320.
340.
0686
0.00
150.
0864
0.00
142.
826
0.04
20.
237
0.00
340.
3848
936
1340
2813
4232
1361
.411
1371
1810
0.7
NB3
15b_
1937
.618
414
8.5
1.24
9000
004.
120.
150.
0270
30.
0006
20.
0592
0.00
140.
716
0.01
40.
0879
70.
0012
0.01
7136
353
912
561
5054
7.8
8.1
543.
57.
399
.2N
B315
b_20
44.9
268.
881
3.32
7800
012
.82.
30.
0609
0.00
180.
0752
0.00
171.
710.
10.
1627
0.00
760.
9318
062
1195
3410
6246
997
3996
942
97.2
NB3
15b_
2120
5.6
977
464
2.11
3400
08.
370.
280.
0502
0.00
130.
084
0.00
162.
154
0.06
0.18
560.
0045
0.74
1042
989
2412
8537
1163
1910
9724
94.3
NB3
15b_
2214
0.2
361
568
0.64
6800
2.14
40.
069
0.02
736
0.00
037
0.05
809
0.00
120.
701
0.01
20.
0872
80.
0012
0.11
7553
154
5.6
7.2
524
4453
97.
153
9.4
7.2
100.
1N
B315
b_24
17.5
212
1.9
71.7
1.70
3600
5.97
0.24
0.02
661
0.00
079
0.05
860.
0016
0.71
60.
018
0.08
810.
0014
0.17
4010
453
115
540
6354
711
544.
18.
499
.5N
B315
b_25
136.
777
212
3.9
6.23
7000
024
.27
0.78
0.11
980.
0018
0.16
290.
0023
10.0
570.
120.
4463
0.00
540.
3096
923
2286
3324
8424
2440
.811
2381
2597
.5N
B315
b_26
31.8
128.
512
0.3
1.07
2000
3.56
0.16
0.02
860.
0011
0.06
570.
0037
0.80
60.
043
0.09
050.
0015
0.02
863
570
2173
392
595
2255
8.3
9.1
93.8
NB3
15b_
2825
4.4
697
274.
22.
5427
000
9.46
0.4
0.09
870.
0012
0.12
127
0.00
176.
067
0.08
10.
3628
0.00
540.
5114
642
1902
2119
7325
1986
1219
9525
100.
5N
B315
b_29
8.26
4212
.33.
4120
409.
810.
650.
0743
0.00
680.
0862
0.00
332.
211
0.08
90.
1882
0.00
390.
3501
519
1440
120
1324
7611
7827
1111
2194
.3N
B315
b_30
156.
130
622
1.4
1.38
2900
04.
920.
170.
074
0.00
120.
0938
50.
0014
3.42
10.
042
0.26
390.
0033
0.27
5421
214
4721
1502
2815
08.7
9.5
1510
1710
0.1
NB3
15c_
0131
.88
127.
942
.79
2.99
2600
010
.61
0.35
0.08
060.
0015
0.09
139
0.00
113.
590.
089
0.27
670.
0054
0.87
9041
115
6627
1451
2415
4620
1574
.527
101.
8N
B315
c_02
133.
428
518
4.4
1.55
1100
03.
991
0.14
0.07
860.
0019
0.08
30.
0016
2.35
20.
091
0.19
830.
0056
0.87
9923
915
2835
1267
3812
2627
1166
3095
.1N
B315
c_03
136.
717
3.2
136.
81.
2737
000
4.11
50.
140.
1084
0.00
170.
1133
0.00
185.
550.
150.
3314
0.00
70.
8094
742
2080
3218
5229
1910
2518
4534
97.6
NB3
15c_
0448
.513
0.6
56.1
2.33
2700
08.
090.
270.
0932
0.00
180.
1038
0.00
145.
030.
160.
3159
0.00
640.
9623
553
1800
3316
8925
1817
2817
7031
97.4
NB3
15c_
0518
8.7
900
190.
14.
7319
0000
16.6
80.
630.
1062
0.00
190.
1287
0.00
227.
070.
170.
3721
0.01
20.
8549
881
2041
3620
7830
2118
2220
5148
96.8
NB3
15c_
0633
0.6
902
471.
81.
9117
0000
6.94
60.
20.
0759
40.
0008
40.
0904
0.00
089
3.37
50.
038
0.26
30.
0053
0.96
0677
914
7916
1432
1914
97.7
8.7
1505
2710
0.5
NB3
15c_
0757
.121
8.5
219.
41.
0022
000
3.22
10.
120.
0279
90.
0005
20.
0575
0.00
130.
731
0.02
0.08
519
0.00
180.
5914
716
558
1049
550
556
1252
711
94.8
NB3
15c_
0871
.269
.950
.11.
4066
000
5.31
10.
160.
153
0.00
250.
1941
0.00
2416
.15
0.53
0.55
20.
011
1.01
0137
928
7744
2777
1928
7932
2833
4698
.4N
B315
c_09
48.1
216.
716
01.
3515
000
4.76
0.22
0.03
276
0.00
065
0.05
846
0.00
110.
902
0.02
40.
1034
0.00
220.
7123
977
651
1353
540
651
1263
4.2
1397
.4N
B315
c_10
54.1
236
95.3
2.48
8500
08.
520.
260.
061
0.00
092
0.07
753
0.00
096
2.25
40.
039
0.20
050.
004
0.78
8069
511
9718
1134
2411
9612
1177
.621
98.5
NB3
15c_
1147
.948
.713
1.6
0.37
7000
1.27
90.
061
0.03
901
0.00
066
0.07
210.
0021
1.28
40.
055
0.13
090.
0031
0.76
2668
773
1397
158
836
2579
318
94.9
NB3
15c_
1242
.923
015
81.
4642
000
4.56
0.18
0.02
893
0.00
058
0.06
750.
002
0.81
40.
028
0.09
060.
002
0.52
1913
457
611
830
5560
215
559.
212
92.9
NB3
15c_
1374
218
752.
9118
0000
12.5
30.
750.
1135
0.00
280.
1311
0.00
157.
030.
180.
4083
0.00
970.
8951
994
2171
5021
1020
2109
2322
0644
104.
6N
B315
c_14
31.5
727
40.4
18.0
016
0000
66.4
2.7
0.08
390.
0026
0.09
617
0.00
123.
566
0.07
30.
2887
0.00
640.
8316
286
1628
4915
4924
1541
1616
3532
106.
1N
B315
c_15
27.9
129.
811
3.4
1.14
3200
03.
947
0.14
0.02
643
0.00
058
0.06
070.
0012
0.72
50.
021
0.08
794
0.00
180.
7312
881
527
1162
146
551
1354
3.3
1198.6
NB3
15c_
1622
.410
4.3
87.9
1.19
1300
04.
110.
150.
0272
80.
0006
20.
0608
0.00
160.
732
0.02
70.
0911
0.00
210.
7052
968
544
1260
857
555
1556
212
101.
3N
B315
c_17
19.8
92.3
73.1
1.26
1900
04.
250.
180.
0291
30.
0008
40.
0627
0.00
180.
802
0.03
10.
0924
0.00
210.
6752
841
580
1668
060
594
1756
9.8
1295.9
NB3
15c_
1860
205.
184
.22.
4411
5000
6.63
0.3
0.07
690.
0022
0.09
730.
0017
2.45
30.
083
0.18
750.
0045
0.87
1616
314
9640
1568
3212
6026
1107
2487.9
NB3
15c_
1920
.17
127.
371
.81.
7714
000
5.93
0.25
0.03
005
0.00
082
0.06
080.
0013
0.78
0.02
0.09
461
0.00
20.
5969
758
601
1561
845
584
1258
2.7
1299.8
NB3
15c_
2026
440
6.8
308
1.32
1600
004.
820.
230.
0921
0.00
120.
1197
0.00
145.
069
0.08
10.
3125
0.00
620.
8077
635
1784
2419
4921
1829
1317
5331
95.8
NB3
15c_
2139
.721
6.6
89.9
2.41
1600
06.
870.
40.
048
0.00
130.
063
0.00
141.
095
0.03
50.
1185
0.00
290.
7202
137
948
2570
046
749
1772
217
96.4
NB3
15c_
2219
.66
98.7
78.8
1.25
5000
04.
260.
210.
0270
50.
0009
70.
0574
0.00
170.
701
0.02
90.
0838
0.00
190.
7187
582
539
1949
063
537
1751
8.5
1196.6
NB3
15c_
2331
.877
.143
.21.
7862
000
6.04
0.24
0.07
830.
0015
0.08
780.
0015
3.34
0.11
0.26
170.
0056
0.88
7332
615
2827
1371
3314
8626
1498
2910
0.8
%
con
±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
±2σ2
Rho3
208 Pb
/2
32Th
207 Pb
/ 20
6 Pb±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
±2σ2
207 Pb
/2
06Pb
100.
1
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 302
Tabl
eA2.
Con
tinue
d.
NB3
15c_
2432
.913
4.8
132.
21.
0241
000
3.50
80.
110.
0266
40.
0005
0.05
510.
0012
0.74
10.
023
0.08
830.
0019
0.71
2790
853
1.4
9.9
398
4856
113
545.
711
97.3
NB3
15c_
2530
.516
0.1
116.
91.
3742
000
4.66
0.16
0.02
796
0.00
055
0.05
550.
0011
0.74
0.02
10.
0906
40.
0019
0.71
6052
355
711
418
4656
112
559.
311
99.7
NB3
15c_
2620
.07
123.
277
1.60
4800
04.
990.
20.
0278
10.
0008
80.
0562
0.00
190.
737
0.03
70.
0865
0.00
230.
7807
494
554
1744
473
558
2153
4.5
1495.8
NB3
15c_
2739
.115
214
01.
0919
000
3.9
0.2
0.03
097
0.00
098
0.05
540.
0014
0.79
60.
029
0.09
530.
0023
0.72
2851
461
619
415
5759
316
587
1499.0
NB3
15c_
2810
0.4
424
389
1.09
4200
03.
744
0.11
0.02
788
0.00
045
0.05
468
0.00
085
0.72
70.
013
0.09
122
0.00
190.
6872
612
555.
78.
839
135
554.
17.
856
2.7
1110
1.6
NB3
15c_
2930
.711
5.9
121.
30.
9648
000
3.41
0.14
0.02
714
0.00
050.
0539
0.00
140.
738
0.02
30.
0895
20.
0019
0.56
4732
154
1.3
9.9
347
5655
914
552.
611
98.9
NB3
15c_
3012
.666
.541
.21.
6141
000
5.3
0.26
0.03
270.
0013
0.06
580.
002
0.98
10.
050.
0988
0.00
220.
9558
975
649
2678
862
689
2560
7.5
1388.2
NB3
15d_
0127
.922
210
7.8
2.06
3200
05.
950.
150.
0276
20.
0016
0.06
527
0.00
170.
740.
019
0.09
080.
0026
0.54
4602
555
0.6
3178
053
561.
811
560.
215
99.7
NB3
15d_
0218
1.8
283
142.
31.
9923
0000
6.46
40.
130.
1363
0.00
760.
1927
0.00
4412
0.29
0.49
930.
014
0.62
6360
225
8214
027
6438
2604
2226
1060
100.
2N
B315
d_03
89.8
1352
222
6.09
3300
0018
.91.
20.
0434
60.
0025
0.07
336
0.00
171.
238
0.03
0.13
450.
0038
0.61
9621
486
048
1023
4981
7.3
1481
3.3
2299.5
NB3
15d_
0412
9.5
422
509
0.83
9200
02.
597
0.08
30.
0272
50.
0015
0.06
425
0.00
160.
715
0.02
0.08
880.
0026
0.62
2444
454
3.4
3074
453
546.
812
548.
215
100.
3N
B315
d_05
56.8
276
207.
81.
3348
000
3.94
90.
097
0.02
901
0.00
170.
0658
40.
0017
0.75
50.
020.
0906
0.00
260.
5647
148
578
3379
955
570.
812
558.
916
97.9
NB3
15d_
0619
3.2
733
246
2.98
1390
009.
570.
230.
0848
0.00
480.
1063
40.
0025
3.64
10.
096
0.26
920.
0076
0.63
1086
416
4590
1735
4315
6020
1537
3898.5
NB3
15d_
0784
.411
0.4
77.5
1.42
6400
04.
892
0.1
0.11
410.
0064
0.14
210.
0034
7.18
30.
180.
3942
0.01
10.
5964
373
2183
120
2249
4121
3521
2141
5210
0.3
NB3
15d_
0839
341.
554
.66.
2513
0000
12.9
50.
440.
0777
0.00
450.
0801
80.
002
1.57
90.
044
0.15
140.
0044
0.61
6733
915
1384
1203
4696
117
909
2594.6
NB3
15d_
0931
.312
6.1
122.
61.
0334
000
3.52
0.15
0.02
655
0.00
150.
0618
0.00
170.
689
0.01
90.
0854
0.00
250.
5331
076
529
3065
858
531.
511
528.
115
99.4
NB3
15d_
1023
.93
79.3
61.7
1.29
1800
04.
352
0.1
0.04
019
0.00
240.
0677
0.00
181.
180.
031
0.13
140.
0038
0.53
9383
796
4684
955
790.
515
795.
522
100.
6N
B315
d_11
72.6
480
122
3.93
3100
0017
.78
0.67
0.06
40.
005
0.08
960.
0023
3.28
20.
094
0.25
420.
0083
0.65
6294
812
5295
1414
5014
7622
1460
4298.9
NB3
15d_
1222
.812
5.4
82.2
1.53
3200
05.
190.
170.
0279
80.
0016
0.05
787
0.00
150.
748
0.02
0.08
920.
0025
0.55
2836
155
832
516
5856
6.4
1255
115
97.3
NB3
15d_
1321
.711
3.6
79.4
1.43
2000
04.
660.
20.
0277
90.
0017
0.06
120.
0027
0.74
40.
031
0.08
360.
0025
0.27
4480
355
433
604
8256
217
517.
315
92.0
NB3
15d_
1435
.214
8.9
129.
91.
1519
000
3.77
80.
099
0.02
798
0.00
160.
0582
0.00
170.
735
0.02
0.08
754
0.00
240.
4281
882
558
3252
362
559
1254
0.9
1496.8
NB3
15d_
1551
.214
859
.52.
4914
000
8.34
0.25
0.08
850.
0052
0.10
50.
0026
4.31
10.
110.
2844
0.00
80.
5776
244
1713
9717
0945
1694
.220
1613
4095.2
NB3
15d_
1666
.912
296
.51.
2633
000
4.26
10.
086
0.07
160.
0041
0.08
492
0.00
22.
850.
072
0.23
430.
0066
0.61
6214
513
9777
1310
4713
6819
1357
3599.2
NB3
15d_
1758
.115
3.7
652.
3610
5000
8.88
0.23
0.09
50.
0054
0.10
791
0.00
255.
173
0.13
0.33
430.
0094
0.62
6535
418
3410
017
6243
1847
2118
5946
100.
6N
B315
d_18
27.9
102
108
0.94
1280
03.
270.
120.
0271
0.00
160.
0575
0.00
160.
705
0.02
20.
086
0.00
250.
5757
394
540
3149
962
540.
513
531.
815
98.4
NB3
15d_
1910
9.5
317
401
0.79
1500
02.
651
0.07
30.
0288
80.
0017
0.05
857
0.00
150.
761
0.02
10.
0918
0.00
270.
5979
723
575
3354
357
573.
712
566.
416
98.7
NB3
15d_
2031
.417
6.9
44.8
43.
9530
000
9.86
0.38
0.07
210.
0045
0.08
070.
0023
2.01
90.
071
0.17
850.
0065
0.68
3446
514
0685
1209
5611
2024
1058
3594.5
NB3
15d_
2151
.826
320
5.9
1.28
7000
04.
638
0.09
60.
0293
40.
0017
0.06
096
0.00
150.
757
0.02
0.09
360.
0026
0.58
8749
258
4.5
3363
254
572.
511
576.
515
100.
7N
B315
d_22
55.7
264.
517
3.9
1.52
6400
4.28
0.23
0.03
920.
0035
0.09
220.
0068
1.11
10.
086
0.09
10.
0026
0.30
9457
377
568
1370
120
746
3856
1.4
1575.3
NB3
15d_
2349
.915
4.3
213.
60.
7219
100
2.59
80.
054
0.02
729
0.00
150.
0609
0.00
170.
696
0.01
90.
0868
90.
0024
0.48
3358
254
4.2
3062
660
535.
911
537.
114
100.
2N
B315
d_24
22.4
122.
710
1.8
1.21
1200
04.
540.
150.
0261
50.
0016
0.06
130.
0018
0.67
90.
019
0.08
423
0.00
230.
4360
782
522
3164
564
525.
412
521.
314
99.2
NB3
15d_
2512
3.5
218
156.
41.
3928
000
5.45
50.
120.
0929
0.00
520.
1147
20.
0027
4.81
70.
120.
3207
0.00
930.
6281
815
1796
9718
7342
1788
2117
9345
100.
3N
B315
d_26
169.
446
141
31.
1222
900
4.11
60.
10.
0482
70.
0027
0.07
755
0.00
191.
565
0.04
20.
1548
0.00
440.
6081
936
953
5211
3248
955
1792
825
97.2
NB3
15d_
2731
.215
261
.72.
4628
000
9.43
0.24
0.06
250.
0038
0.08
350.
0021
2.20
30.
064
0.20
20.
0062
0.64
6837
1226
7312
7750
1180
2011
8633
100.
5N
B315
d_28
7615
0.5
106.
61.
4146
000
5.27
50.
120.
0844
0.00
490.
1039
0.00
253.
780.
120.
2792
0.00
910.
7205
752
1638
9116
9245
1584
2515
8646
100.
1N
B315
d_29
11.3
469
.247
.21.
4731
005.
380.
170.
0282
90.
0017
0.06
30.
0021
0.75
90.
025
0.09
290.
0027
0.42
7502
756
434
683
7157
214
572.
916
100.
2N
B315
d_30
14.1
963
.827
.12.
3559
008.
850.
240.
0619
0.00
370.
0842
0.00
222.
238
0.06
0.20
490.
0058
0.55
1681
912
1371
1291
5211
9119
1201
3110
0.8
NB3
15e_
0163
.119
623
70.
8316
000
30.
180.
0292
90.
0012
0.06
020.
0011
0.77
80.
016
0.09
350.
0011
0.47
0078
458
324
602
4258
3.7
9.2
576.
26.
398.7
NB3
15e_
0219
.85
103.
176
.51.
3550
000
4.25
0.22
0.02
765
0.00
120.
0617
0.00
150.
739
0.01
70.
0874
0.00
120.
2005
182
551
2364
651
561
1054
1.6
7.6
96.5
±2σ2
206 Pb
/ 23
8 U±2σ2
%
con
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
±2σ2
207 Pb
/ 23
5 U
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
Rho3
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
207 Pb
/ 20
6 Pb±2σ2
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 303
Tabl
eA2.
Con
tinue
d.
NB3
15e_
0315
.25
116.
460
.71.
9210
000
6.46
0.33
0.02
686
0.00
110.
0584
0.00
110.
709
0.01
40.
0881
80.
0009
10.
3475
069
536
2253
042
543.
28.
354
4.7
5.4
100.
3N
B315
e_04
52.5
267.
825
1.1
1.07
2000
04.
069
0.2
0.02
216
0.00
099
0.06
350.
0013
0.77
10.
020.
0885
0.00
150.
6153
002
443
2071
943
580
1154
6.6
9.2
94.2
NB3
15e_
0527
424
319
91.
2220
0000
4.9
0.47
0.15
140.
0067
0.18
680.
0018
13.2
0.22
0.51
470.
008
0.82
3220
928
4712
027
1216
2692
1626
7534
99.4
NB3
15e_
0623
.210
9.7
95.8
1.15
1600
04.
041
0.2
0.02
644
0.00
110.
0586
0.00
120.
705
0.01
60.
0868
90.
0009
90.
4361
122
527
2154
749
540.
89.
653
75.
999.3
NB3
15e_
0718
.81
91.7
78.8
1.16
1000
4.01
0.2
0.02
601
0.00
110.
0595
0.00
130.
693
0.01
60.
0845
0.00
110.
3745
602
519
2357
049
533.
59.
552
3.1
6.3
98.1
NB3
15e_
0842
.514
9.9
164.
70.
9130
000
3.00
30.
140.
0278
30.
0011
0.05
850.
0011
0.72
50.
011
0.09
029
0.00
098
0.01
6878
554.
721
534
4055
2.8
6.8
557.
25.
810
0.8
NB3
15e_
0928
.716
411
5.1
1.42
2100
04.
810.
240.
027
0.00
110.
0595
0.00
110.
709
0.01
40.
0868
70.
0009
0.37
9960
553
822
579
3854
4.9
8.6
537
5.4
98.6
NB3
15e_
1012
.11
59.1
44.3
1.33
5000
4.61
0.24
0.02
949
0.00
130.
0609
0.00
120.
835
0.01
90.
0991
0.00
120.
5010
813
587
2663
346
615
1060
97.
399.0
NB3
15e_
1131
.817
213
4.2
1.28
1700
04.
330.
220.
0255
70.
001
0.05
820.
0011
0.68
50.
013
0.08
574
0.00
089
0.28
0954
551
0.3
2052
241
528.
87.
653
0.3
5.3
100.
3N
B315
e_12
32.1
174
134.
21.
3040
000
4.38
10.
220.
0256
60.
001
0.05
790.
001
0.67
80.
013
0.08
526
0.00
095
0.45
2863
851
2.1
2051
240
524.
67.
652
7.4
5.6
100.
5N
B315
e_13
83.5
411
336
1.22
2300
04.
026
0.19
0.02
677
0.00
10.
0587
10.
0007
0.70
80.
010.
0872
70.
0008
80.
5582
5253
3.9
2055
026
542.
96.
153
9.3
5.2
99.3
NB3
15e_
1423
.09
146.
294
.11.
5511
000
5.08
0.26
0.02
691
0.00
120.
0622
0.00
180.
697
0.01
90.
0819
0.00
096
0.06
7327
953
723
659
5853
611
507.
45.
794.7
NB3
15e_
1530
.213
9.7
130
1.07
9000
03.
634
0.17
0.02
505
0.00
099
0.05
850.
001
0.66
90.
012
0.08
321
0.00
091
0.38
0136
500
1953
838
519.
27.
351
5.2
5.4
99.2
NB3
15e_
1658
.745
722
5.9
2.02
9000
06.
910.
330.
0283
40.
0011
0.05
965
0.00
067
0.75
80.
011
0.09
230.
001
0.64
1796
856
4.8
2258
624
572.
36.
556
9.1
6.1
99.4
NB3
15e_
1790
.218
6.8
172.
61.
0813
000
3.79
50.
190.
0566
70.
0021
0.08
020.
0009
82.
120.
032
0.19
220.
0026
0.64
0383
1114
4111
9724
1154
1111
3314
98.2
NB3
15e_
1810
8.8
218.
812
6.1
1.74
1050
006.
380.
30.
094
0.00
360.
1224
0.00
125.
462
0.07
20.
3241
0.00
340.
6786
632
1816
6719
8918
1894
1118
0916
95.5
NB3
15e_
1926
.520
810
5.9
1.96
1400
06.
640.
320.
0269
0.00
110.
0586
60.
0007
90.
728
0.01
10.
0904
40.
0009
80.
5019
068
536
2154
630
555
6.5
558.
15.
810
0.6
NB3
15e_
2028
.65
130.
112
4.4
1.05
1600
3.65
10.
180.
0251
50.
001
0.06
010.
001
0.68
50.
014
0.08
297
0.00
086
0.58
603
502
2059
839
528.
98.
351
3.8
5.1
97.2
NB3
15e_
2179
.721
731
80.
6818
000
2.28
20.
110.
0271
80.
001
0.05
804
0.00
083
0.71
350.
0096
0.08
960.
001
0.33
6594
542.
120
527
3254
6.4
5.7
553.
36
101.
3N
B315
e_22
60.8
246
251.
30.
9818
000
3.36
30.
170.
0262
40.
001
0.05
845
0.00
089
0.70
60.
013
0.08
790.
0011
0.57
2434
452
3.5
2054
033
541.
77.
554
2.9
6.3
100.
2N
B315
e_23
32.4
215
134.
11.
6017
000
5.24
0.26
0.02
614
0.00
110.
0588
80.
0008
90.
677
0.01
10.
0833
90.
0007
90.
4069
205
521
2155
333
524.
46.
451
6.3
4.7
98.5
NB3
15e_
2412
0.4
939
454.
42.
0712
000
6.67
0.33
0.02
894
0.00
130.
0602
0.00
110.
766
0.01
90.
0919
40.
0009
0.77
6725
357
625
598
3557
610
567
5.3
98.4
NB3
15e_
2545
.261
.850
1.24
2000
04.
650.
290.
0981
0.00
40.
1199
0.00
165.
787
0.08
70.
3518
0.00
410.
5244
095
1890
7319
5023
1943
1319
4219
99.9
NB3
15e_
2659
.129
2.1
236.
81.
2320
000
4.21
40.
210.
027
0.00
10.
0618
0.00
120.
759
0.01
50.
0895
0.00
091
0.29
0911
153
8.4
2065
440
572.
28.
755
2.5
5.4
96.6
NB3
15e_
2727
8.3
250.
430
4.3
0.82
7500
03.
035
0.14
0.09
990.
0036
0.12
051
0.00
085
5.84
60.
049
0.35
20.
0029
0.63
9927
419
2467
1964
1219
52.7
7.3
1944
1499.6
NB3
15e_
2810
6.3
298
157.
21.
9051
000
6.88
0.33
0.07
354
0.00
270.
0961
90.
0007
73.
534
0.04
30.
2668
0.00
250.
7532
943
1434
5215
4915
1533
.79.
515
2413
99.4
NB3
15e_
2977
354.
711
8.4
3.00
3200
011
.40.
690.
0707
0.00
270.
0920
60.
0006
43.
162
0.03
50.
2498
0.00
250.
7869
409
1384
5314
6613
1448
.38.
314
3713
99.2
NB3
15e_
3024
.914
699
.21.
4729
004.
980.
250.
0272
30.
0011
0.06
140.
0012
0.75
50.
016
0.08
944
0.00
096
0.40
0817
954
321
639
4357
0.3
9.5
552.
15.
696.8
NB3
15f_
0146
.929
318
61.
5830
000
5.5
0.32
0.02
690.
0011
0.06
270.
0017
0.77
50.
026
0.08
860.
0013
0.61
5196
153
621
684
5158
114
547.
37.
494.2
NB3
15f_
0211
730
624
41.
2530
000
4.96
0.45
0.05
290.
002
0.07
380.
0012
1.72
30.
029
0.17
020.
0025
0.47
4563
510
4138
1030
3310
1912
1013
1499.4
NB3
15f_
0365
241
176
1.37
3000
04.
870.
230.
0408
60.
0014
0.06
728
0.00
097
1.25
70.
020.
1354
0.00
140.
4625
932
809
2783
930
825.
88.
781
8.7
7.9
99.1
NB3
15f_
0410
5.2
137.
611
61.
1934
000
4.42
90.
190.
0988
0.00
320.
1225
0.00
125.
995
0.07
50.
3547
0.00
390.
6595
387
1904
5919
9018
1974
1119
5719
99.1
NB3
15f_
0515
.63
62.0
558
.85
1.05
500
3.56
0.21
0.02
960.
0015
0.07
390.
0027
0.90
70.
033
0.08
870.
0014
0.20
7242
559
029
1014
7365
317
547.
78.
183.9
NB3
15f_
0698
359
202
1.78
9300
05.
80.
270.
0521
0.00
220.
078
0.00
121.
798
0.03
70.
1678
0.00
270.
6730
0910
2742
1142
3110
4313
999
1595.8
NB3
15f_
0735
.216
911
6.6
1.45
3500
04.
580.
260.
0319
0.00
140.
068
0.00
210.
881
0.03
0.09
340.
0012
0.42
3888
463
527
868
6664
116
576.
97.
390
.0N
B315
f_08
38.8
244
157.
81.
5570
000
5.41
0.25
0.02
693
0.00
091
0.05
957
0.00
099
0.73
30.
013
0.08
920.
001
0.41
2491
753
7.1
1857
837
557.
67.
555
0.7
6.2
98.8
NB3
15f_
0920
.92
80.7
78.3
1.03
9000
03.
220.
180.
0294
0.00
140.
0759
0.00
40.
875
0.04
80.
0831
0.00
150.
2816
301
585
2810
6010
063
325
514.
68.
881.3
NB3
15f_
1039
.418
516
21.
1470
000
4.07
0.21
0.02
650.
0009
20.
0585
50.
0009
20.
691
0.01
20.
0856
0.00
110.
4925
028
529
1854
134
532.
87
529.
36.
599.3
NB3
15f_
1116
.82
369
48.4
17.
6211
0000
27.9
1.5
0.03
810.
0016
0.06
536
0.00
098
1.13
70.
020.
1257
0.00
160.
5507
305
756
3078
032
770.
39.
376
3.1
9.3
99.1
%
con
±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
±2σ2
Rho3
208 Pb
/2
32Th
207 Pb
/ 20
6 Pb±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
±2σ2
207 Pb
/2
06Pb
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 304
Tabl
eA2.
Con
tinue
d.
NB3
15f_
1264
.462
.995
.10.
6650
000
2.48
40.
120.
0738
0.00
250.
095
0.00
163.
318
0.05
80.
2527
0.00
360.
4514
762
1438
4815
2132
1484
1414
5219
97.8
NB3
15f_
1310
7.4
228.
113
2.6
1.72
6000
003.
920.
190.
0866
0.00
310.
1022
0.00
22.
808
0.07
40.
2002
0.00
480.
7014
206
1679
5716
6036
1356
2011
7625
86.7
NB3
15f_
1463
.714
8.4
91.2
1.63
9000
05.
901
0.26
0.07
610.
0025
0.09
565
0.00
113.
458
0.03
60.
2616
0.00
250.
3389
965
1482
4615
3722
1516
.88.
314
9813
98.8
NB3
15f_
157.
9736
58.
642
.44
1000
000
149.
98
0.10
140.
0045
0.11
705
0.00
115.
418
0.06
70.
3351
0.00
390.
6950
185
1949
8319
1118
1886
1118
6219
98.7
NB3
15f_
1645
288.
320
0.6
1.44
2900
05.
162
0.23
0.02
430.
0007
80.
0586
40.
0008
30.
666
0.01
10.
0823
0.00
10.
5483
517
485.
215
546
3151
7.8
6.6
510
5.9
98.5
NB3
15f_
1747
.514
0.9
197
0.72
5000
02.
536
0.12
0.02
628
0.00
093
0.05
840.
0012
0.71
0.01
40.
0882
0.00
110.
2483
244
524
1853
046
543.
88.
554
4.6
6.4
100.
1N
B315
f_18
74.2
319
285
1.12
4400
03.
670.
180.
0282
20.
0011
0.06
180.
0014
0.78
20.
022
0.09
210.
0019
0.60
6382
856
223
657
4858
612
568
1196.9
NB3
15f_
1989
.421
916
6.5
1.32
6500
04.
731
0.22
0.05
80.
002
0.08
030.
0014
2.31
70.
046
0.20
960.
0032
0.53
3271
411
4038
1199
3512
1614
1226
1710
0.8
NB3
15f_
2014
.59
81.6
50.8
1.61
1200
05.
140.
320.
0318
0.00
160.
0637
0.00
20.
782
0.02
70.
0888
0.00
180.
4409
434
632
3271
366
585
1654
811
93.7
NB3
15f_
2141
.924
1.6
164.
41.
4743
000
5.14
0.25
0.02
790.
0009
90.
0595
0.00
120.
732
0.01
70.
0885
0.00
120.
5024
741
556
2058
645
557
1054
6.3
7.3
98.1
NB3
15f_
2286
.829
335
60.
8230
000
2.71
0.15
0.02
647
0.00
10.
0693
0.00
20.
793
0.02
40.
084
0.00
20.
4509
8552
820
893
6259
515
520
1287.4
NB3
15f_
2337
.320
016
01.
2518
000
4.78
0.28
0.02
588
0.00
097
0.05
810.
0011
0.67
30.
015
0.08
40.
0011
0.53
0712
451
619
524
4352
1.7
8.8
519.
86.
399.6
NB3
15f_
2451
.424
9.6
198.
31.
2611
000
4.07
0.21
0.02
789
0.00
110.
0654
0.00
280.
763
0.03
30.
0845
0.00
110.
1838
833
556
2178
090
573
1852
2.7
6.6
91.2
NB3
15f_
2527
.615
1.6
111.
41.
3680
000
4.57
0.22
0.02
712
0.00
099
0.06
160.
0013
0.73
50.
016
0.08
630.
001
0.32
2647
254
120
650
4755
8.4
9.5
533.
36
95.5
NB3
15f_
2622
928
528
01.
0210
0000
3.87
0.17
0.08
960.
0029
0.10
910.
0013
4.64
90.
064
0.30
780.
0033
0.55
0418
1735
5317
8222
1757
1217
3016
98.5
NB3
15f_
2717
0.2
931
382.
22.
4413
0000
8.85
0.38
0.04
829
0.00
150.
0722
30.
0006
71.
671
0.01
80.
1677
0.00
170.
6078
6795
329
992
1899
6.8
6.8
999.
19.
310
0.2
NB3
15f_
2836
145
145
1.00
03.
552
0.17
0.02
713
0.00
094
0.05
850.
0012
0.73
50.
016
0.09
110.
0011
0.37
8349
454
118
539
4656
09.
356
2.1
6.7
100.
4N
B315
f_29
63.1
256.
624
4.6
1.05
9000
03.
687
0.18
0.02
829
0.00
110.
0626
0.00
210.
773
0.02
70.
0892
0.00
110.
2864
193
564
2167
965
580
1555
0.6
6.6
94.9
NB3
15f_
3011
6.5
862
479
1.80
3000
006.
473
0.28
0.02
654
0.00
087
0.05
807
0.00
064
0.72
840.
0092
0.09
10.
0011
0.60
3170
952
9.4
1753
125
555.
35.
456
1.5
6.4
101.
1N
B315
g_01
245.
294
737
32.
5422
0000
9.59
0.36
0.06
750.
0014
0.09
543
0.00
088
3.59
10.
051
0.26
980.
0036
0.77
7584
213
2126
1534
1715
4711
1539
1899.5
NB3
15g_
0223
.414
598
.31.
4812
000
4.99
0.2
0.02
467
0.00
056
0.06
0.00
095
0.70
20.
011
0.08
469
0.00
093
0.33
5405
492
1159
334
540.
76.
752
45.
596.9
NB3
15g_
0360
.436
3.4
774.
7216
000
21.3
1.9
0.08
260.
0016
0.11
149
0.00
086
4.80
80.
058
0.31
070.
0036
0.78
7963
816
0329
1824
1417
8510
1744
1897.7
NB3
15g_
0427
147.
611
5.3
1.28
04.
490.
180.
0244
50.
0005
10.
0603
0.00
120.
706
0.01
60.
0845
0.00
110.
4864
734
488
1061
544
541.
39.
252
3.1
6.3
96.5
NB3
15g_
0549
.213
195
.61.
3730
000
5.05
0.26
0.05
550.
0011
0.07
895
0.00
097
2.10
90.
030.
1926
0.00
240.
5829
705
1091
2011
6524
1150
.69.
811
3513
98.6
NB3
15g_
0614
.957
55.8
1.02
4400
3.8
0.27
0.02
770.
0011
0.06
130.
0018
0.74
10.
022
0.08
740.
0013
0.27
2279
355
222
619
6556
113
539.
98
96.2
NB3
15g_
0777
.319
9.6
100.
11.
9959
000
7.41
30.
260.
0825
0.00
120.
1074
20.
0009
84.
546
0.05
50.
3054
0.00
320.
6820
824
1602
2317
5317
1738
.310
1718
1698.8
NB3
15g_
0858
.231
4.8
259.
81.
2126
000
4.27
70.
160.
0239
30.
0003
90.
0590
40.
0008
80.
676
0.01
0.08
293
0.00
087
0.34
3847
847
87.
755
933
524
6.3
513.
65.
298.0
NB3
15g_
0910
111
5.1
86.5
1.33
2500
05.
050.
190.
1264
0.00
260.
1797
0.00
2311
.14
0.24
0.44
990.
0069
0.81
0408
924
0546
2648
2125
3320
2394
3094.5
NB3
15g_
1026
.310
310
01.
0380
03.
60.
180.
0286
10.
0008
0.06
360.
0016
0.83
20.
022
0.09
520.
0015
0.37
7514
957
016
721
5261
513
586.
28.
995.3
NB3
15g_
1118
529
714
02.
1212
0000
7.33
0.31
0.15
050.
0047
0.23
90.
0026
16.1
50.
40.
491
0.01
10.
8983
976
2832
8231
1118
2883
2425
7447
89.3
NB3
15g_
1255
.523
422
21.
0518
000
3.89
0.21
0.02
846
0.00
061
0.05
908
0.00
092
0.72
70.
012
0.08
960.
0011
0.44
5816
956
712
560
3455
4.2
6.9
553.
16.
699.8
NB3
15g_
1316
.595
.665
.31.
4650
000
5.1
0.24
0.02
785
0.00
067
0.05
990.
0013
0.72
80.
016
0.08
834
0.00
096
0.27
2390
755
513
581
4755
4.1
9.1
545.
75.
798.5
NB3
15g_
1459
.817
6.8
221.
40.
8020
000
2.69
50.
10.
0301
90.
0005
50.
0611
0.00
10.
806
0.01
50.
096
0.00
130.
5195
274
601
1163
335
599.
68.
459
0.8
7.4
98.5
NB3
15g_
1528
.586
.770
.91.
2210
900
2.75
0.13
0.04
450.
0017
0.11
130.
0039
1.42
20.
055
0.09
280.
0013
0.42
8543
988
033
1796
6689
624
572
7.9
63.8
NB3
15g_
1654
.151
522
1.8
2.32
9000
08.
240.
310.
0272
30.
0004
60.
0584
70.
0006
30.
737
0.01
0.09
160.
001
0.63
1855
654
2.9
9.1
542
2356
0.2
5.9
565
610
0.9
NB3
15g_
1742
.420
317
91.
1321
000
3.9
0.16
0.02
610.
0006
60.
0587
0.00
120.
705
0.01
60.
0872
0.00
120.
4587
154
521
1354
545
542.
59.
953
8.9
7.1
99.3
NB3
15g_
1851
.229
1.4
161.
21.
8170
000
5.20
80.
190.
0355
90.
0008
60.
0625
40.
0009
80.
831
0.01
50.
0966
0.00
110.
5106
962
707
1769
333
614.
88.
559
4.4
6.5
96.7
NB3
15g_
1912
5.7
454
158.
32.
8716
0000
11.0
40.
480.
0876
0.00
120.
1118
80.
0008
64.
909
0.06
50.
3184
0.00
360.
8151
592
1697
2318
3013
1802
1117
8218
98.9
NB3
15g_
2010
520
3.7
150.
61.
3535
000
4.83
10.
170.
0774
0.00
120.
0958
0.00
086
3.55
30.
040.
2692
0.00
280.
6590
326
1506
2315
4117
1538
.29
1536
1499.9
±2σ2
206 Pb
/ 23
8 U±2σ2
%
con
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
±2σ2
207 Pb
/ 23
5 U
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
Rho3
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
207 Pb
/ 20
6 Pb±2σ2
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 305
Tabl
eA2.
Con
tinue
d.
NB3
15g_
2242
.616
4.5
178.
30.
9220
000
3.16
40.
140.
0253
90.
0005
20.
0569
0.00
160.
672
0.02
0.08
50.
0013
0.36
1365
650
710
471
6152
112
525.
87.
910
0.9
NB3
15g_
2319
.03
88.4
83.6
1.06
2500
3.91
0.17
0.02
428
0.00
079
0.06
10.
0019
0.73
20.
023
0.08
650.
0013
0.25
7256
448
516
639
7255
613
534.
57.
496.1
NB3
15g_
2479
.118
2.5
123.
81.
4769
000
4.99
0.2
0.06
640.
0013
0.08
411
0.00
091
2.64
80.
034
0.22
670.
0027
0.62
0104
312
9824
1290
2113
12.9
9.5
1317
1410
0.3
NB3
15g_
2522
.82
144.
991
.91.
5890
000
5.24
0.2
0.02
625
0.00
063
0.05
990.
0013
0.73
30.
017
0.08
840.
0009
90.
3701
7252
412
581
4755
7.4
9.8
546
5.8
98.0
NB3
15g_
2648
.923
616
41.
4427
000
3.96
0.48
0.03
078
0.00
066
0.06
650.
0014
0.92
50.
020.
1003
0.00
130.
3430
4861
313
812
4766
411
615.
97.
792.8
NB3
15g_
2725
.911
4.3
106.
91.
0713
000
3.59
50.
140.
0257
30.
0005
80.
0583
0.00
120.
696
0.01
60.
086
0.00
110.
4564
116
513
1152
147
535.
29.
453
1.7
6.7
99.3
NB3
15g_
2837
.418
415
31.
2070
000
4.18
0.2
0.02
617
0.00
059
0.05
837
0.00
099
0.69
50.
012
0.08
591
0.00
096
0.35
0684
652
212
532
3753
5.3
7.3
531.
25.
799.2
NB3
15g_
2932
170.
811
7.9
1.45
9000
04.
550.
180.
0284
20.
0005
10.
0634
0.00
180.
791
0.02
60.
0898
0.00
110.
5270
426
566
1069
158
589
1455
4.5
6.4
94.1
NB3
15g_
3028
.116
9.4
111.
51.
5217
000
5.2
0.35
0.02
630.
001
0.05
960.
0019
0.76
50.
023
0.09
320.
002
0.26
9801
952
520
573
6857
613
574
1299.7
Wei
ghte
d m
eans
of p
rim
ary
refe
renc
e m
ater
ial
9150
0 (n
=85)
15.0
481
.54
30.0
92.
7138
364.
9425
39.
3729
0.52
20.
0541
20.
0026
0.07
490.
0018
91.
8559
0.05
230.
1795
10.
0035
50.
4940
114
1065
.19.
410
54.7
11.8
1063
.13.
410
63.8
3.7
Wei
ghte
d m
eans
of s
econ
dary
refe
renc
e m
ater
ial(s
)FC
1 (n
=77)
140.
5650
1.73
257.
141.
9530
1474
.712
66.
3923
0.26
90.
0570
10.
002
0.07
679
0.00
131
1.98
060.
0414
0.18
743
0.00
367
0.64
5122
510
93.7
3.0
1104
.23.
411
05.8
1.4
1102
.31.
8Pe
ixe
(n=3
7)6.
7520
2.58
26.3
67.
6935
802.
526
.65
1.55
50.
0273
50.
0014
90.
0594
10.
0012
90.
7427
0.01
690.
0908
40.
0015
70.
4405
425
548.
74.
555
9.4
7.3
562.
91.
556
2.4
1.3
R33
(n=5
0)50
.51
302.
6426
3.06
1.15
3433
3.89
831
4.68
850.
255
0.02
059
0.00
091
0.05
616
0.00
172
0.51
760.
0168
0.06
693
0.00
146
0.41
6241
401.
42.
042
3.6
7.7
419.
11.
341
7.0
1.1
GM
10-0
1 Th
roug
hfar
e Fo
rmat
ion
(UTM
- 6
8075
9E, 4
9489
58N
; Gri
d Zo
ne 1
9T)
GM
10-0
1a_0
0116
6.7
170.
713
6.4
1.25
1080
004.
358
0.27
0.13
210.
0049
0.16
290.
0025
10.2
730.
090.
4572
0.00
90.
6631
424
2507
8824
8420
2459
.18.
124
2740
98.7
GM
10-0
1a_0
0213
7.8
349.
613
4.3
2.60
3000
008.
450.
540.
1117
0.00
430.
1281
0.00
216.
350.
10.
3591
0.00
840.
7145
333
2140
7820
6929
2024
1519
7740
97.7
GM
10-0
1a_0
037.
6933
.57.
574.
4350
0013
.74
10.
1117
0.00
630.
1217
0.00
255.
720.
10.
3417
0.00
830.
5577
116
2136
110
1973
3719
3115
1894
4098.1
GM
10-0
1a_0
049.
8878
.29.
568.
1850
000
282.
20.
1165
0.00
630.
1293
0.00
246.
598
0.08
10.
3718
0.00
850.
5858
3522
2411
020
8233
2061
1120
3740
98.8
GM
10-0
1a_0
0510
5.1
165.
810
0.4
1.65
1400
05.
097
0.32
0.11
560.
0047
0.12
540.
002
6.26
10.
076
0.36
060.
008
0.71
5121
2210
8520
3329
2013
1119
8736
98.7
GM
10-0
1a_0
0629
4.3
696
239.
32.
9128
0000
8.75
0.56
0.13
580.
0056
0.15
90.
0025
9.01
0.14
0.41
130.
0096
0.74
3095
625
7310
024
4226
2337
1422
1944
95.0
GM
10-0
1a_0
0752
.978
.853
.71.
4721
000
4.69
30.
30.
1114
0.00
450.
1229
0.00
226.
078
0.09
20.
3606
0.00
810.
6077
0421
3482
1993
3319
8513
1984
3899.9
GM
10-0
1a_0
0823
016
7075
62.
2164
700
11.4
10.
740.
0348
0.00
210.
106
0.00
182.
464
0.03
60.
1674
0.00
390.
6872
764
691
4117
3032
1264
1299
822
79.0
GM
10-0
1a_0
0912
0928
9021
971.
3216
1000
3.79
0.27
0.06
360.
0034
0.13
240.
0034
3.51
0.12
0.19
280.
008
0.78
6380
912
4664
2127
4415
2728
1136
4374.4
GM
10-0
1a_0
1015
1.4
384.
914
9.7
2.57
2500
008.
20.
520.
1153
0.00
460.
126
0.00
26.
209
0.08
80.
3588
0.00
830.
7381
851
2204
8320
4227
2008
1319
7938
98.6
GM
10-0
1a_0
1122
4.4
326
162.
72.
0016
0000
6.39
0.42
0.15
790.
0062
0.19
290.
0035
13.2
20.
330.
502
0.01
60.
8231
186
2962
110
2764
3026
9224
2621
6797.4
GM
10-0
1a_0
1434
8.2
649
362.
11.
7915
0000
4.81
0.32
0.11
20.
0046
0.11
780.
0022
4.87
50.
099
0.30
160.
0081
0.71
9570
221
4584
1920
3317
9617
1698
4094.5
GM
10-0
1a_0
1575
.819
2.8
75.1
2.57
5700
08.
110.
520.
115
0.00
470.
1277
0.00
216.
372
0.09
70.
3623
0.00
850.
7164
184
2200
8420
6328
2026
1319
9240
98.3
GM
10-0
1a_0
1632
6.5
316
241
1.31
2200
004.
395
0.28
0.15
590.
0059
0.18
920.
003
13.5
10.
180.
5186
0.01
20.
7485
016
2927
100
2734
2627
1413
2691
5299.2
GM
10-0
1a_0
1720
993
915
1.8
6.19
3300
0018
.72.
20.
1586
0.00
920.
1875
0.00
6411
.66
0.37
0.45
40.
018
0.56
1869
929
7016
027
1654
2575
3024
1180
93.6
GM
10-0
1a_0
1834
0.5
525
373.
61.
4127
0000
4.59
60.
290.
105
0.00
410.
1256
0.00
25.
867
0.08
60.
339
0.00
790.
7382
6520
1774
2035
2819
5413
1881
3896.3
GM
10-0
1a_0
1922
4.1
873
171.
75.
0813
0000
14.9
0.94
0.15
210.
0059
0.17
640.
0029
10.7
70.
150.
4448
0.01
10.
7770
625
2861
100
2617
2725
0213
2370
5194.7
GM
10-0
1a_0
2073
.925
6.4
89.8
2.86
1070
009.
750.
630.
0941
0.00
380.
1058
0.00
194.
484
0.05
50.
3066
0.00
640.
5149
119
1817
7017
2533
1727
1017
2432
99.8
GM
10-0
1a_0
2143
861
233
1.8
1.84
6000
005.
790.
380.
1538
0.00
610.
191
0.00
3512
.47
0.24
0.47
70.
013
0.74
1033
2892
110
2748
3026
3918
2512
5895.2
GM
10-0
1a_0
2236
015
6079
11.
9798
000
11.4
60.
780.
0534
0.00
310.
1701
0.00
316.
720.
120.
2863
0.00
630.
5992
674
1051
6025
5731
2075
1616
2331
78.2
GM
10-0
1a_0
2328
8.8
180.
423
7.2
0.76
1200
002.
563
0.16
0.14
270.
0056
0.16
890.
0028
10.8
90.
150.
4677
0.01
0.63
1661
2696
100
2544
2825
1213
2473
4698.4
%
con
±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
±2σ2
Rho3
208 Pb
/2
32Th
207 Pb
/ 20
6 Pb±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
±2σ2
207 Pb
/2
06Pb
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 306
Tabl
eA2.
Con
tinue
d.
GM
10-0
1a_0
2442
217
4344
2.2
3.94
011
.43
0.72
0.11
110.
0043
0.12
250.
0019
5.34
90.
047
0.31
660.
0068
0.78
9394
721
3078
1990
2818
76.1
7.5
1773
3394.5
GM
10-0
1a_0
2511
416
3.2
118.
11.
3826
000
4.39
90.
290.
1143
0.00
470.
1264
0.00
276.
270.
120.
3604
0.00
960.
6076
334
2187
8420
4338
2012
1719
8346
98.6
GM
10-0
1a_0
2617
251
324
72.
0832
000
7.11
0.47
0.08
30.
004
0.18
450.
0034
7.4
0.16
0.29
370.
0092
0.81
8797
1612
7426
9231
2159
1916
5946
76.8
GM
10-0
1a_0
2720
2.8
237.
415
41.
5420
0000
5.72
0.36
0.15
150.
0058
0.20
240.
0033
15.0
20.
150.
536
0.01
10.
6222
731
2851
100
2844
2628
16.2
9.6
2766
4698.2
GM
10-0
1a_0
281.
1555
.41.
929
.16
1800
021
542
0.09
50.
020.
1222
0.00
295.
456
0.09
70.
3281
0.00
950.
5742
916
1780
350
1981
4318
9215
1827
4696.6
GM
10-0
1a_0
2943
2.6
229.
432
5.8
0.70
5000
002.
321
0.15
0.15
710.
006
0.18
810.
0032
13.2
80.
20.
5144
0.01
30.
7567
916
2948
100
2723
2827
0113
2674
5499.0
GM
10-0
1a_0
3013
2.9
510
365
1.40
6420
09.
680.
70.
0432
0.00
240.
1356
0.00
225.
510.
130.
2959
0.00
790.
7987
113
854
4621
7029
1899
2016
7039
87.9
GM
10-0
1a_0
3180
.641
310
4.6
3.95
7000
0012
.24
0.78
0.09
070.
0036
0.10
10.
0015
3.89
40.
061
0.27
970.
0067
0.79
7656
517
5567
1642
2716
1113
1589
3498.6
GM
10-0
1a_0
3231
916
6.4
268
0.62
3000
02.
135
0.13
0.14
0.00
520.
1634
0.00
2510
.56
0.11
0.47
020.
0098
0.71
1213
626
4893
2488
2624
85.9
9.1
2484
4399.9
GM
10-0
1a_0
3311
5.6
86.4
90.6
0.95
4200
03.
267
0.21
0.15
040.
006
0.18
450.
0034
12.8
20.
160.
5073
0.01
10.
5290
366
2831
110
2689
2926
6512
2644
4799.2
GM
10-0
1a_0
3429
.539
.524
.86
1.59
1500
05.
170.
360.
1412
0.00
650.
1637
0.00
3610
.02
0.19
0.44
540.
011
0.51
8758
126
6612
024
9335
2433
1823
7349
97.5
GM
10-0
1a_0
3510
0.4
404
520
0.78
4200
010
.71
10.
056
0.01
20.
1313
0.00
275.
870.
130.
3246
0.01
0.74
5075
710
9022
021
1136
1954
1818
1049
92.6
GM
10-0
1a_0
3625
4.7
295
192
1.54
6000
5.11
80.
320.
1558
0.00
580.
1901
0.00
2913
.43
0.2
0.51
290.
012
0.76
9824
729
2510
027
4125
2708
1426
6751
98.5
GM
10-0
1a_0
3731
237
818
8.5
2.01
8400
05.
860.
50.
192
0.01
40.
2046
0.00
514
.65
0.31
0.51
930.
011
0.33
3807
135
4023
028
5739
2790
2026
9647
96.6
GM
10-0
1a_0
3815
0.7
601
176.
63.
4011
0000
10.4
70.
660.
1003
0.00
390.
1114
90.
0017
4.72
10.
069
0.30
720.
0073
0.78
5745
419
3271
1821
2817
6912
1726
3697.6
GM
10-0
1a_0
3937
119
9.1
299.
40.
6612
0000
2.36
20.
150.
1467
0.00
620.
1909
0.00
313
.25
0.19
0.50
330.
011
0.69
6126
227
6511
027
4726
2695
1326
2649
97.4
GM
10-0
1a_0
4014
8.5
135.
412
81.
0611
000
3.61
40.
230.
1386
0.00
520.
164
0.00
2610
.38
0.13
0.46
0.01
0.69
4373
526
2392
2494
2724
7012
2438
4598.7
GM
10-0
1a_0
4115
5.2
151.
313
4.8
1.12
5700
03.
890.
260.
1374
0.00
520.
163
0.00
2610
.18
0.12
0.45
360.
0097
0.67
8002
426
0192
2484
2724
5311
2410
4398.2
GM
10-0
1a_0
4268
.954
179
.66.
8027
0000
243
0.10
210.
0045
0.12
420.
0019
5.24
30.
094
0.30
570.
0079
0.81
5030
219
6383
2015
2818
5716
1718
3992.5
GM
10-0
1a_0
4337
.135
.227
.21.
2952
000
4.44
0.32
0.16
440.
0089
0.17
250.
004
12.6
60.
40.
529
0.01
80.
7526
742
3070
150
2578
3926
5030
2734
7510
3.2
GM
10-0
1a_0
4411
4.6
161.
492
.11.
7577
000
6.13
30.
390.
1489
0.00
560.
1831
0.00
2712
.75
0.15
0.50
560.
011
0.77
0248
2804
9926
7924
2660
1126
3647
99.1
GM
10-0
1a_0
4511
0.2
471
137
3.44
1060
009.
350.
630.
096
0.00
420.
1408
0.00
235.
130.
110.
266
0.00
720.
7973
831
1852
7622
3529
1843
1715
2037
82.5
GM
10-0
1a_0
4614
1.7
361
153.
12.
3618
0000
7.9
0.5
0.10
980.
0042
0.12
850.
0019
6.38
0.08
80.
3599
0.00
810.
7701
477
2106
7620
7725
2028
1219
8139
97.7
GM
10-0
1a_0
4716
2.6
215.
113
9.9
1.54
2000
005.
360.
340.
1387
0.00
520.
1637
0.00
2610
.56
0.13
0.46
80.
010.
6764
214
2625
9324
9127
2483
1224
7346
99.6
GM
10-0
1a_0
4818
0.2
310
196
1.58
1500
005.
284
0.34
0.11
030.
0041
0.12
590.
002
6.13
50.
070.
3518
0.00
780.
7301
385
2114
7620
4128
1995
.79.
519
4538
97.5
GM
10-0
1a_0
4937
441
932
61.
2917
0000
4.34
60.
270.
1362
0.00
50.
1644
0.00
2610
.34
0.17
0.45
580.
011
0.75
9381
225
8089
2501
2524
6315
2419
4898.2
GM
10-0
1a_0
5035
325
4.4
313
0.81
2600
003.
150.
250.
1346
0.00
50.
1616
0.00
2510
.15
0.11
0.45
450.
0093
0.66
9238
2552
8924
7026
2447
1024
1541
98.7
GM
10-0
1a_0
5120
620
721
4.6
0.96
6000
03.
209
0.2
0.11
340.
0043
0.12
980.
0022
6.59
70.
080.
3686
0.00
820.
6573
681
2170
7820
9229
2058
1120
2239
98.3
GM
10-0
1a_0
5294
.744
299
.84.
4311
0000
14.2
10.
90.
1128
0.00
440.
1265
0.00
26.
214
0.09
90.
356
0.00
850.
7544
021
2160
8020
4728
2006
1419
6241
97.8
GM
10-0
1a_0
5323
7.8
503
255
1.97
1200
006.
080.
410.
1115
0.00
430.
1238
0.00
195.
685
0.08
50.
3331
0.00
80.
7864
561
2137
7820
0828
1927
1318
5239
96.1
GM
10-0
1a_0
5419
0.8
299.
118
11.
6524
0000
5.08
0.34
0.12
660.
0058
0.14
450.
0026
7.5
0.15
0.37
990.
011
0.78
9708
924
0710
022
7831
2174
2020
7451
95.4
GM
10-0
1a_0
5562
.315
069
.62.
1632
000
7.15
0.46
0.10
650.
0042
0.12
20.
002
5.84
60.
068
0.34
750.
0074
0.64
6004
320
4476
1982
2919
5210
1922
3598.5
GM
10-0
1a_0
5656
917
2099
91.
7280
600
5.73
90.
360.
0666
0.00
280.
161
0.00
244.
878
0.06
70.
2191
0.00
490.
7594
981
1302
5324
6425
1799
1212
7726
71.0
GM
10-0
1a_0
5744
7134
.82.
0425
000
7.43
0.49
0.15
0.00
620.
1927
0.00
3213
.97
0.17
0.52
490.
011
0.61
0723
2823
110
2762
2727
4612
2722
4799.1
GM
10-0
1a_0
5849
2.3
805
429.
71.
8760
0000
5.95
60.
370.
1345
0.00
50.
1661
0.00
259.
660.
130.
4206
0.00
950.
7644
5325
5089
2516
2524
0112
2262
4394.2
GM
10-0
1a_0
5921
088
917
4.6
5.09
5100
0016
.23
10.
1414
0.00
530.
1747
0.00
2710
.70.
150.
443
0.01
10.
8248
181
2673
9426
0126
2496
1323
6248
94.6
GM
10-0
1a_0
6019
762
124
12.
5820
3000
7.4
0.5
0.09
830.
004
0.12
440.
0021
4.61
90.
071
0.27
0.00
660.
7303
3818
9574
2018
3017
5213
1540
3487.9
GM
10-0
1a_0
6121
0.1
225.
315
2.5
1.48
1000
005.
155
0.32
0.15
80.
0059
0.20
50.
0031
15.4
70.
140.
5453
0.01
10.
7125
231
2964
100
2864
2528
43.7
8.5
2805
4698.6
GM
10-0
1a_0
6298
.310
7.5
74.2
1.45
2000
04.
955
0.31
0.15
240.
0058
0.19
170.
003
13.7
60.
150.
5194
0.01
0.58
2731
828
6610
027
5625
2732
1026
9644
98.7
±2σ2
206 Pb
/ 23
8 U±2σ2
%
con
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
±2σ2
207 Pb
/ 23
5 U
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
Rho3
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
207 Pb
/ 20
6 Pb±2σ2
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 307
Tabl
eA2.
Con
tinue
d.
GM
10-0
1a_0
6363
.973
.249
.41.
4846
000
4.61
20.
290.
1478
0.00
580.
1729
0.00
2811
0.15
0.46
120.
010.
6659
8927
8610
025
8327
2521
1224
4444
96.9
GM
10-0
1a_0
6415
6.7
199.
111
1.6
1.78
1100
005.
920.
370.
1597
0.00
590.
2145
0.00
3415
.85
0.19
0.53
630.
011
0.63
6807
429
9911
029
3725
2866
1127
6747
96.5
GM
10-0
1a_0
6522
571
169
0.42
5800
01.
506
0.09
50.
1504
0.00
640.
255
0.00
6918
.29
0.51
0.52
30.
016
0.57
5146
428
3211
032
1242
3003
2727
0970
90.2
GM
10-0
1a_0
6628
9.9
373
243.
11.
5329
0000
5.03
20.
320.
135
0.00
50.
1615
0.00
249.
950.
120.
4484
0.00
990.
7737
748
2559
8824
6925
2432
1123
8744
98.1
GM
10-0
1a_0
6715
0.3
165.
512
7.9
1.29
4500
04.
299
0.27
0.13
290.
005
0.16
010.
0025
10.0
30.
140.
4534
0.00
980.
6930
432
2522
8824
5427
2436
1324
0944
98.9
GM
10-0
1a_0
6845
949
146
41.
0617
0000
3.05
80.
210.
1138
0.00
50.
1268
0.00
235.
930.
150.
3391
0.01
10.
8306
121
7790
2051
3219
6222
1881
5295.9
GM
10-0
1a_0
694.
6514
2.4
4.61
30.8
955
000
94.7
7.6
0.11
420.
0073
0.11
890.
0019
5.51
80.
062
0.33
520.
0069
0.63
6915
421
8013
019
3629
1902
.39.
718
6333
97.9
GM
10-0
1a_0
7015
7.6
283.
215
71.
8060
0000
5.80
10.
360.
1125
0.00
430.
1276
0.00
196.
412
0.06
90.
3634
0.00
750.
7204
787
2154
7820
6227
2034
.59
1998
3598.2
GM
10-0
1a_0
7118
822
1.3
192.
61.
1510
0000
3.65
30.
230.
1104
0.00
450.
1275
0.00
216.
290.
086
0.35
750.
0088
0.77
4874
821
1681
2061
2920
1612
1969
4297.7
GM
10-0
1a_0
7217
9.3
153
145.
51.
0553
000
3.44
0.22
0.13
540.
005
0.16
320.
0025
10.2
80.
120.
4569
0.00
960.
6993
843
2567
9024
8726
2459
1124
2543
98.6
GM
10-0
1a_0
7321
0.4
207.
117
6.7
1.17
1380
003.
561
0.23
0.12
970.
005
0.16
860.
0028
9.28
0.17
0.40
020.
011
0.80
9575
524
6389
2541
2823
6416
2168
5091.2
GM
10-0
1a_0
7413
7.3
234.
513
7.7
1.70
1400
005.
440.
350.
1093
0.00
410.
1241
0.00
196.
252
0.07
60.
3658
0.00
770.
6965
287
2096
7520
1327
2014
1120
0936
99.8
GM
10-0
1a_0
7510
9.8
115.
710
8.5
1.07
5000
03.
409
0.23
0.11
010.
0042
0.12
640.
0021
6.24
90.
073
0.35
820.
0073
0.57
9181
921
1076
2045
2920
1010
1973
3598.2
GM
10-0
1a_0
7688
.220
486
.12.
3719
0000
7.31
0.46
0.11
120.
0043
0.12
790.
002
6.42
10.
064
0.36
250.
0076
0.70
4354
821
3177
2066
2820
34.2
8.7
1993
3698.0
GM
10-0
1a_0
7777
.552
395
.61
5.47
1800
0016
.02
10.
0878
0.00
350.
1017
70.
0015
3.78
10.
046
0.26
990.
0058
0.75
0773
617
0064
1654
2715
8710
1540
3097.0
GM
10-0
1a_0
7810
5.3
312
113
2.76
5790
07.
040.
490.
1007
0.00
50.
1895
0.00
316.
850.
130.
2594
0.00
630.
7402
6919
3991
2737
2720
9117
1487
3271.1
GM
10-0
1a_0
7953
.762
.650
.11.
2513
000
3.91
90.
250.
1155
0.00
450.
129
0.00
226.
766
0.09
30.
3802
0.00
840.
6358
823
2208
8220
8030
2079
1220
7639
99.9
GM
10-0
1a_0
8023
7.8
299.
117
8.2
1.68
2600
005.
808
0.37
0.14
120.
0052
0.18
610.
0029
12.9
40.
150.
5018
0.01
10.
7321
227
2670
9327
0626
2674
1126
2145
98.0
GM
10-0
1a_0
8125
534
625
51.
3621
0000
4.12
90.
270.
107
0.00
40.
1237
0.00
195.
869
0.09
10.
3438
0.00
820.
7752
016
2055
7320
0727
1956
1319
0440
97.3
GM
10-0
1a_0
8215
0.9
331
114.
92.
8850
0000
9.04
0.62
0.13
930.
0052
0.16
390.
0025
10.2
70.
130.
4551
0.00
980.
7177
226
2636
9124
9426
2458
1224
1744
98.3
GM
10-0
1a_0
8315
3.7
159.
513
5.5
1.18
1050
003.
679
0.24
0.11
990.
0057
0.16
460.
0028
9.13
0.2
0.40
290.
011
0.78
2424
522
9899
2503
3123
4721
2180
5392.9
GM
10-0
1a_0
8486
.214
1.1
92.6
1.52
1470
004.
30.
290.
1004
0.00
50.
1355
0.00
315.
690.
140.
3064
0.01
10.
7759
547
1931
9321
6441
1926
2117
2152
89.4
GM
10-0
1a_0
8515
2.8
111.
298
1.13
2000
003.
640.
250.
1663
0.00
660.
2214
0.00
3617
.17
0.24
0.56
330.
013
0.71
8562
431
0811
029
8927
2945
1328
7953
97.8
GM
10-0
1a_0
8620
246
863
30.
7482
000
3.98
0.27
0.03
510.
0026
0.14
40.
0034
4.13
0.11
0.20
550.
0077
0.77
9513
698
5022
7241
1659
2112
0441
72.6
GM
10-0
1a_0
8743
.248
.529
.39
1.65
4400
05.
170.
330.
1538
0.00
630.
1949
0.00
3414
.02
0.18
0.52
10.
011
0.56
4951
428
9011
027
8029
2749
1227
0245
98.3
GM
10-0
1a_0
8827
.844
17.6
2.50
2500
08.
80.
690.
1707
0.00
780.
2284
0.00
3918
.79
0.23
0.59
630.
013
0.62
4965
3180
140
3037
2830
2912
3013
5299.5
GM
10-0
1a_0
8914
819
4.3
91.8
2.12
3000
006.
80.
430.
1679
0.00
630.
2219
0.00
3317
.87
0.18
0.58
110.
012
0.73
7329
331
3511
029
9224
2981
.49.
729
5251
99.0
GM
10-0
1a_0
9012
813
6.3
129.
91.
0550
0000
2.12
80.
160.
1061
0.00
580.
1425
0.00
544.
940.
250.
251
0.01
70.
8332
857
2038
110
2253
6718
0643
1442
8679.8
GM
10-0
1a_0
9160
.723
258
.23.
9980
0000
11.9
40.
770.
1079
0.00
430.
1227
0.00
25.
910.
064
0.34
890.
0074
0.65
6186
120
7079
1995
2819
61.6
9.5
1929
3698.3
GM
10-0
1a_0
9266
.215
8.9
290
0.55
4600
06.
240.
440.
0230
90.
0012
0.22
390.
0036
8.78
0.17
0.28
290.
0077
0.81
3277
546
124
3007
2623
1317
1605
3969.4
GM
10-0
1a_0
9355
132
535
00.
9322
0000
2.72
10.
180.
1615
0.00
60.
2032
0.00
3214
.84
0.21
0.53
010.
012
0.72
5316
530
2610
028
4926
2803
1427
4050
97.8
GM
10-0
1a_0
9417
2.4
484
165
2.93
1600
007.
450.
530.
1111
0.00
520.
1256
0.00
245.
560.
160.
3222
0.01
10.
8288
158
2128
9520
3535
1908
2417
9954
94.3
GM
10-0
1a_0
9523
9.1
367
227.
51.
6120
0000
4.23
0.27
0.10
850.
0042
0.11
770.
0019
5.14
80.
086
0.31
670.
0075
0.73
2163
420
8176
1923
2718
4114
1772
3796.3
GM
10-0
1a_0
9619
0.2
201.
612
31.
6434
600
2.74
60.
180.
1614
0.00
650.
1724
0.00
417.
250.
120.
3058
0.00
870.
5497
831
3023
110
2573
4021
4115
1719
4380.3
GM
10-0
1a_0
9794
.724
0.9
85.4
2.82
7000
008.
250.
570.
112
0.00
440.
1282
0.00
26.
429
0.08
10.
3622
0.00
760.
6726
277
2144
8020
7128
2035
1119
9236
97.9
GM
10-0
1a_0
9812
7.8
97.7
94.1
1.04
4000
03.
058
0.2
0.14
050.
0055
0.16
310.
0028
10.3
40.
120.
4601
0.00
990.
6065
941
2656
9724
8429
2464
1024
3944
99.0
GM
10-0
1a_0
9912
120
4.6
112
1.83
1000
005.
305
0.34
0.11
230.
0043
0.12
450.
002
6.16
50.
073
0.35
790.
0083
0.76
4674
521
5078
2018
2819
9810
1975
3898.8
GM
10-0
1a_1
0020
6.1
418.
819
2.1
2.18
1500
006.
255
0.4
0.11
120.
0043
0.12
740.
0019
6.19
0.1
0.35
060.
0085
0.79
9594
521
3179
2062
2620
0314
1936
4096.7
GM
10-0
1a_1
0154
.220
6.5
48.1
4.29
9000
0012
.44
0.8
0.11
660.
0048
0.12
840.
0021
6.59
50.
077
0.37
350.
008
0.65
4997
822
2887
2073
2920
5710
2045
3899.4
%
con
±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
±2σ2
Rho3
208 Pb
/2
32Th
207 Pb
/ 20
6 Pb±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
±2σ2
207 Pb
/2
06Pb
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 308
Tabl
eA2.
Con
tinue
d.
GM
10-0
1a_1
0226
.01
56.8
18.7
43.
0338
000
9.45
0.63
0.14
540.
0063
0.18
040.
0031
12.3
30.
170.
4937
0.01
0.54
6208
427
4011
026
5328
2628
1325
8645
98.4
GM
10-0
1a_1
0315
7.9
240.
610
4.3
2.31
1100
007.
320.
510.
167
0.00
970.
2601
0.00
4920
.84
0.61
0.58
0.01
80.
8063
663
3120
170
3250
3231
3427
2947
7494.0
GM
10-0
1a_1
0459
.579
.256
.61.
4055
000
4.54
0.33
0.11
230.
0047
0.13
10.
0022
6.64
30.
082
0.36
720.
008
0.64
1408
921
5086
2108
3020
6511
2015
3897.6
GM
10-0
1a_1
0511
1.5
366
270
1.36
5420
05.
370.
390.
0451
0.00
280.
1477
0.00
294
0.15
0.19
70.
0088
0.90
0276
389
054
2321
3116
3432
1157
4770.8
GM
10-0
1a_1
0611
7.8
306
107.
42.
8590
0000
7.53
0.58
0.11
940.
0053
0.12
310.
0025
5.93
0.16
0.35
10.
012
0.80
4590
522
7895
1997
3519
6224
1937
5798.7
GM
10-0
1a_1
0780
.217
2.9
74.2
2.33
1000
006.
740.
430.
1155
0.00
470.
1258
0.00
216.
365
0.07
50.
3668
0.00
80.
6534
558
2209
8520
3930
2026
1020
1438
99.4
GM
10-0
1a_1
0829
.210
7.4
74.5
81.
4468
000
10.3
0.67
0.04
220.
0022
0.13
290.
0024
5.99
40.
080.
326
0.00
710.
5613
551
836
4221
3132
1975
1118
1834
92.1
GM
10-0
1a_1
0914
4.3
176.
513
7.4
1.28
8000
003.
827
0.24
0.11
280.
0044
0.12
570.
0022
6.35
70.
069
0.36
640.
008
0.60
8082
321
5980
2034
3020
25.2
9.5
2012
3899.3
GM
10-0
1a_1
1016
0.7
215
156.
21.
3830
0000
4.09
40.
260.
1113
0.00
430.
1251
0.00
26.
248
0.07
10.
3611
0.00
770.
6773
058
2133
7820
2729
2010
1019
8737
98.9
GM
10-0
1a_1
1198
.417
094
.41.
8070
0000
5.41
0.36
0.11
50.
0046
0.12
430.
0021
6.26
40.
091
0.36
50.
0086
0.70
2283
421
9984
2014
3020
1113
2005
4099.7
GM
10-0
1a_1
1210
.62
19.2
10.1
21.
9080
000
5.75
0.4
0.11
680.
0058
0.13
160.
0035
6.75
0.16
0.37
240.
0093
0.40
3906
722
3010
021
1046
2074
2120
3944
98.3
GM
10-0
1a_1
1359
.519
959
.43.
3590
0000
10.2
10.
660.
1116
0.00
450.
1264
0.00
26.
269
0.06
60.
3583
0.00
740.
6600
301
2138
8220
4629
2013
.19.
319
7636
98.2
GM
10-0
1a_1
1415
9.8
187
116.
41.
6115
0000
5.04
0.36
0.15
470.
0059
0.19
80.
0031
14.4
40.
140.
5272
0.01
10.
7024
9229
0610
028
0725
2777
.89
2728
4798.2
GM
10-0
1a_1
1539
8.8
1659
615
2.70
3010
008.
140.
530.
0762
0.00
380.
119
0.00
23.
892
0.05
50.
2386
0.00
590.
7564
809
1483
7119
3831
1611
1113
7931
85.6
GM
10-0
1a_1
1621
2.8
799
220.
13.
6332
0000
9.91
0.63
0.11
10.
0043
0.12
10.
0021
5.38
0.1
0.32
30.
0089
0.78
4437
221
2778
1968
3118
7916
1803
4496.0
GM
10-0
1a_1
1775
.611
3.5
72.7
1.56
9000
004.
868
0.31
0.11
930.
0046
0.13
510.
0023
7.29
50.
093
0.39
040.
0085
0.62
4599
622
7783
2164
3021
4712
2124
4098.9
GM
10-0
1a_1
1864
311
9349
02.
4320
0000
07.
012
0.44
0.15
10.
0056
0.18
780.
0028
11.7
50.
130.
4526
0.00
940.
7212
499
2842
9927
2124
2585
.29.
624
0642
93.1
GM
10-0
1a_1
1949
224
832
40.
7741
0000
2.46
50.
160.
1729
0.00
640.
222
0.00
3417
.93
0.25
0.58
510.
013
0.73
1954
3223
110
2995
2629
8613
2968
5399.4
GM
10-0
1a_1
2025
8.4
277
189.
21.
4613
0000
4.85
0.31
0.15
910.
0059
0.20
380.
0031
15.3
30.
20.
5426
0.01
20.
7415
8629
8410
028
5425
2836
1227
9252
98.4
GM
10-0
1a_1
2137
.644
40.1
51.
1020
000
3.58
80.
240.
1085
0.00
490.
1229
0.00
296.
020.
110.
3544
0.00
790.
3363
348
2082
8919
9042
1976
1619
5538
98.9
GM
10-0
1a_1
2294
.131
211
3.8
2.74
2400
008.
940.
570.
1011
0.00
430.
1266
0.00
25.
780.
068
0.32
910.
0069
0.66
5734
319
4678
2051
2919
4210
1833
3494.6
GM
10-0
1a_1
2392
.537
116
82.
2120
7000
10.4
20.
690.
0681
0.00
320.
1769
0.00
287.
469
0.09
50.
3042
0.00
680.
7226
611
1330
6126
2227
2168
1217
1234
79.0
GM
10-0
1a_1
2479
.210
1.4
54.4
1.86
1000
006.
660.
430.
1801
0.00
70.
2601
0.00
422
.72
0.23
0.63
30.
013
0.69
2029
733
4612
032
4524
3215
1031
6051
98.3
GM
10-0
1a_1
2592
.115
513
1.3
1.18
1100
003.
925
0.25
0.08
740.
0034
0.10
30.
0018
4.11
10.
052
0.28
780.
006
0.54
8394
1693
6316
7734
1655
1016
3030
98.5
GM
10-0
1a_1
2678
.116
3.2
871.
8890
0000
6.21
0.4
0.11
190.
0043
0.12
570.
0021
6.37
80.
064
0.36
660.
0076
0.60
4161
221
4478
2035
2920
29.6
9.1
2013
3699.2
GM
10-0
1a_1
2717
2.6
337.
115
0.1
2.25
1900
008.
110.
520.
1412
0.00
570.
178
0.00
2811
.98
0.14
0.48
520.
010.
6516
384
2668
100
2633
2626
0211
2549
4598.0
GM
10-0
1a_1
2821
6.8
318
304
1.05
1500
003.
353
0.21
0.08
950.
0034
0.10
352
0.00
164.
038
0.05
0.28
220.
0058
0.66
1816
1732
6216
8828
1641
1016
0229
97.6
GM
10-0
1a_1
2927
5.2
261.
222
2.8
1.17
1000
004.
131
0.26
0.15
520.
0066
0.20
850.
0033
15.3
80.
190.
533
0.01
20.
7352
489
2913
120
2891
2528
3812
2752
5297.0
GM
10-0
1a_1
3036
334
933
21.
0521
0000
3.41
50.
210.
137
0.00
520.
166
0.00
2510
.10.
150.
4412
0.00
980.
7383
447
2593
9325
1525
2442
1323
5544
96.4
GM
10-0
1a_1
3119
6.4
181.
318
30.
9930
0000
3.37
80.
210.
1353
0.00
510.
1627
0.00
2410
.221
0.09
70.
4545
0.00
920.
7345
321
2565
9024
8125
2454
8.8
2414
4198.4
GM
10-0
1a_1
3214
3.8
368
164.
82.
2335
0000
7.56
0.63
0.11
110.
0042
0.12
820.
002
6.33
60.
084
0.35
720.
0078
0.70
6767
2129
7620
7027
2024
1119
6837
97.2
GM
10-0
1a_1
3314
3.8
354
163.
62.
1659
0000
7.02
0.44
0.11
170.
0042
0.12
40.
0019
6.08
10.
087
0.35
480.
008
0.74
1364
321
4175
2011
2819
9211
1960
3798.4
GM
10-0
1a_1
3414
6.3
339
113.
22.
9935
0000
10.9
40.
690.
1618
0.00
610.
2125
0.00
3216
.55
0.18
0.56
130.
012
0.74
9571
930
3111
029
2324
2908
1028
7150
98.7
GM
10-0
1a_1
3515
435
017
4.5
2.01
7000
006.
740.
430.
112
0.00
420.
1286
0.00
26.
520.
078
0.36
720.
0076
0.66
5624
721
4576
2076
2720
4711
2016
3698.5
GM
10-0
1a_1
3618
0.5
215.
320
8.8
1.03
3200
003.
316
0.22
0.11
120.
0044
0.12
480.
0022
6.08
60.
099
0.35
330.
0079
0.62
3876
321
3080
2027
3419
8714
1950
3898.1
GM
10-0
1a_1
3744
.774
.450
.31.
4820
0000
4.91
80.
320.
1125
0.00
440.
131
0.00
236.
574
0.09
30.
363
0.00
780.
5816
015
2153
8021
0731
2054
1219
9637
97.2
GM
10-0
1a_1
3823
421
819
81.
1014
0000
3.96
50.
260.
1509
0.00
570.
1907
0.00
2813
.56
0.13
0.51
410.
011
0.81
4467
328
4010
027
4724
2718
.39.
226
7346
98.3
GM
10-0
1a_1
3933
459
632
11.
8640
0000
06.
336
0.4
0.13
350.
0049
0.16
350.
0024
10.1
60.
140.
4491
0.00
990.
7577
553
2533
8824
9025
2447
1323
9044
97.6
GM
10-0
1a_1
4020
0.6
528
188.
12.
8140
0000
09.
910.
650.
1353
0.00
510.
1644
0.00
2410
.66
0.12
0.46
870.
0097
0.73
3803
225
6491
2500
2424
9311
2477
4399.4
±2σ2
206 Pb
/ 23
8 U±2σ2
%
con
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
±2σ2
207 Pb
/ 23
5 U
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
Rho3
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
207 Pb
/ 20
6 Pb±2σ2
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 309
Tabl
eA2.
Con
tinue
d.
GM
10-0
1a_1
4160
.349
375
6.57
8700
0019
.93
1.3
0.10
310.
0042
0.13
270.
002
5.50
90.
078
0.3
0.00
680.
7588
777
1982
7821
3227
1900
1216
9134
89.0
GM
10-0
1a_1
4219
267
821
73.
1223
0000
010
.36
0.7
0.11
030.
0044
0.13
970.
0026
6.76
0.17
0.34
720.
011
0.80
9418
721
1481
2222
3220
7823
1920
5392.4
GM
10-0
1a_1
4387
.155
018
1.5
3.03
6800
0021
.87
1.5
0.06
250.
0042
0.25
070.
0051
15.1
90.
280.
4412
0.01
10.
5957
095
1223
8031
8631
2826
1723
5551
83.3
GM
10-0
1a_1
4433
580
726
9.9
2.99
1500
000
9.62
0.6
0.15
730.
0064
0.19
920.
0029
13.8
70.
170.
503
0.01
10.
7769
922
2951
110
2818
2427
3912
2625
4895.8
GM
10-0
1a_1
4515
9.9
198.
414
61.
3661
0000
4.57
40.
290.
1384
0.00
540.
1617
0.00
2710
.17
0.13
0.45
440.
010.
6556
826
1895
2469
2924
4912
2417
4698.7
GM
10-0
1a_1
4658
.520
4.3
66.7
3.06
5000
0010
.15
0.65
0.11
070.
0044
0.12
350.
0019
6.20
90.
065
0.36
320.
0078
0.74
3063
921
2180
2004
2820
04.7
9.2
1996
3799.6
GM
10-0
1a_1
483.
8583
.54.
2219
.79
2700
0067
.66
0.11
440.
0088
0.12
560.
0021
6.20
80.
086
0.35
760.
0078
0.64
2240
921
8016
020
3329
2006
1219
7037
98.2
GM
10-0
1a_1
4972
579
487
90.
9010
0000
02.
894
0.18
0.10
440.
0039
0.12
254
0.00
185.
679
0.08
10.
3346
0.00
760.
7772
054
2007
7119
9327
1926
1318
6037
97.6
GM
10-0
1a_1
5043
.331
.137
.20.
8450
0000
2.88
80.
20.
1469
0.00
60.
1872
0.00
3713
.22
0.18
0.51
150.
012
0.54
0219
727
6911
027
1233
2693
1326
6150
98.8
GM
10-0
1a_1
5223
239
828
51.
4060
0000
04.
768
0.3
0.10
180.
0045
0.12
450.
0019
6.02
30.
070.
3497
0.00
740.
7114
9119
5883
2019
2719
7810
1933
3697.7
GM
10-0
1a_1
5324
347
827
21.
7680
0000
05.
571
0.35
0.11
210.
0042
0.12
620.
0019
6.17
70.
084
0.35
340.
0078
0.74
1983
421
4677
2045
2819
9912
1950
3797.5
GM
10-0
1a_1
5532
646
323
61.
9620
0000
06.
920.
460.
1752
0.00
680.
2472
0.00
3620
.30.
230.
5945
0.01
30.
7960
604
3262
120
3165
2331
0411
3006
5196.8
GM
10-0
1a_1
5615
837
018
2.1
2.03
9000
000
6.65
0.43
0.10
910.
0042
0.12
450.
002
6.05
90.
066
0.35
250.
0073
0.64
1595
720
9276
2022
2719
83.3
9.5
1946
3598.1
GM
10-0
1a_1
5794
.114
2.2
102.
61.
3924
0000
4.55
70.
290.
1156
0.00
440.
1303
0.00
226.
734
0.08
20.
3727
0.00
770.
5764
501
2211
8020
9829
2077
1020
4237
98.3
GM
10-0
1a_1
5814
4.9
456
162.
22.
8130
0000
08.
810.
560.
1121
0.00
450.
1241
40.
0018
6.08
80.
084
0.35
510.
0079
0.77
3835
121
4781
2016
2519
8712
1958
3898.5
GM
10-0
1a_1
5911
8.4
184.
813
9.6
1.32
7000
04.
580.
320.
108
0.00
420.
1228
0.00
26.
002
0.06
90.
3541
0.00
750.
6478
984
2072
7619
9429
1976
.59.
619
5335
98.8
GM
10-0
1a_1
6085
878
582
10.
9681
0000
03.
117
0.2
0.13
190.
005
0.16
440.
0025
9.63
0.14
0.42
350.
010.
7831
299
2503
8824
9926
2398
1322
7546
94.9
GM
10-0
1a_1
6131
232
728
71.
1421
0000
03.
870.
250.
1363
0.00
50.
1633
0.00
2510
.34
0.12
0.45
740.
0096
0.69
9609
2581
8924
8825
2467
.79.
924
2743
98.4
GM
10-0
1a_1
6218
3.1
325.
116
8.2
1.93
1000
0000
06.
684
0.42
0.13
560.
0051
0.16
660.
0025
10.5
80.
110.
4595
0.00
970.
7484
651
2569
9125
2125
2486
.19.
724
3643
98.0
GM
10-0
1a_1
6372
321
4063
33.
3810
0000
000
10.2
50.
650.
1433
0.00
540.
1675
0.00
259.
850.
095
0.42
620.
0091
0.79
1875
327
0595
2531
2524
19.9
922
8841
94.5
GM
10-0
1a_1
6469
693
356
61.
6527
0000
000
4.79
0.31
0.15
480.
0065
0.18
890.
0034
11.8
30.
250.
4576
0.01
20.
7310
953
2907
110
2734
3125
9321
2427
5493.6
GM
10-0
1a_1
6579
.529
967
.54.
4330
0000
0014
.18
0.92
0.14
620.
006
0.18
160.
0028
11.6
90.
140.
4661
0.01
0.71
2217
127
5710
026
6526
2580
1124
6544
95.5
GM
10-0
1a_1
6617
817
420
20.
8641
0000
03.
150.
220.
1139
0.00
440.
1256
0.00
196.
511
0.06
30.
3747
0.00
770.
7218
908
2179
8120
3726
2046
.58.
520
5136
100.
2G
M10
-01a
_167
660
928
563
1.65
3000
0000
5.55
0.36
0.14
460.
0053
0.17
940.
0025
11.8
90.
160.
4789
0.01
10.
8322
438
2730
9426
4623
2594
1325
2147
97.2
GM
10-0
1a_1
6825
.98
37.9
19.4
51.
9580
0000
6.99
0.48
0.16
370.
0077
0.22
150.
0045
17.8
60.
410.
583
0.01
60.
6884
226
3059
130
2985
3229
7622
2958
6599.4
GM
10-0
1a_1
6912
9.2
259.
512
9.8
2.00
8000
000
6.86
0.46
0.12
280.
0049
0.13
50.
002
7.64
30.
073
0.40
980.
0086
0.77
8667
223
4089
2162
2621
89.1
8.5
2213
3910
1.1
GM
10-0
1a_1
7066
.913
5.1
701.
9312
0000
06.
630.
430.
1175
0.00
470.
1328
0.00
217.
326
0.09
0.39
760.
0087
0.70
6169
122
4586
2133
2721
5011
2157
4010
0.3
GM
10-0
1a_1
7115
924
3.1
186
1.31
3000
000
4.57
20.
290.
1045
0.00
390.
1239
0.00
196.
235
0.06
20.
3636
0.00
730.
6682
077
2009
7120
1028
2008
.58.
719
9934
99.5
GM
10-0
1a_1
7275
.711
2.6
61.4
1.83
3700
006.
570.
430.
1493
0.00
590.
1924
0.00
2914
.18
0.13
0.53
350.
011
0.74
5885
428
1110
027
6024
2762
.48.
727
5645
99.8
GM
10-0
1a_1
7311
3.2
463.
515
1.2
3.07
1300
000
10.0
50.
640.
0902
0.00
350.
1056
60.
0015
4.33
90.
044
0.29
640.
0063
0.81
9038
417
4665
1724
2617
008.
416
7331
98.4
GM
10-0
1a_1
7464
51.9
511.
0250
0000
3.33
0.23
0.15
360.
0074
0.21
410.
0051
15.5
50.
430.
528
0.01
90.
7497
692
2886
130
2933
3828
4627
2729
8095.9
GM
10-0
1a_1
7525
2.3
249.
322
4.2
1.11
7000
000
3.84
50.
240.
1346
0.00
50.
1627
0.00
2410
.652
0.09
40.
4731
0.00
960.
7595
847
2552
8824
8225
2492
.48.
324
9642
100.
1G
M10
-01a
_176
260
284
194.
11.
4630
000
5.32
90.
340.
1605
0.00
590.
2159
0.00
3117
.65
0.13
0.59
040.
012
0.87
2378
130
0810
029
4923
2970
.26.
929
9047
100.
7G
M10
-01a
_177
51.8
87.4
55.7
1.57
6000
005.
260.
340.
1114
0.00
450.
1271
0.00
226.
607
0.09
30.
3764
0.00
810.
5969
121
3382
2054
3120
6013
2059
3810
0.0
GM
10-0
1a_1
7828
1.8
751
588
1.28
4680
005.
40.
350.
0567
0.00
260.
1394
0.00
234.
725
0.07
60.
2452
0.00
630.
7823
446
1114
4922
1729
1770
1414
1332
79.8
GM
10-0
1a_1
7954
561
847
91.
2920
000
4.54
0.36
0.13
840.
0059
0.18
710.
0031
13.1
40.
280.
509
0.01
50.
8344
446
2619
110
2715
2826
8820
2652
6598.7
GM
10-0
1a_1
8069
.316
7.5
78.6
2.13
2000
007.
180.
460.
1051
0.00
420.
1221
0.00
196.
062
0.06
10.
3587
0.00
720.
6486
113
2019
7719
8627
1983
.88.
719
7634
99.6
GM
10-0
1a_1
8172
.614
1.9
76.2
1.86
2000
006.
190.
40.
1135
0.00
480.
1325
0.00
237.
060.
089
0.38
610.
0085
0.61
6627
821
7386
2128
3021
1811
2104
3999.3
GM
10-0
1a_1
8285
611
4010
611.
0718
0000
03.
780.
240.
0976
0.00
440.
1815
0.00
319.
220.
330.
368
0.01
30.
8847
241
1881
8126
6428
2353
3520
1663
83.7
%
con
±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
±2σ2
Rho3
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
207 Pb
/ 20
6 Pb±2σ2
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th±2σ2
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 310
Tabl
eA2.
Con
tinue
d.
GM
10-0
1a_1
8328
632
621
61.
5180
0000
05.
328
0.34
0.15
540.
0058
0.20
880.
0031
16.3
40.
150.
5653
0.01
10.
6787
407
2919
100
2894
2428
96.2
9.1
2888
4699.7
GM
10-0
1a_1
8460
.214
7.2
65.5
2.25
7000
007.
580.
490.
107
0.00
420.
1273
0.00
226.
469
0.07
10.
3667
0.00
750.
5348
087
2055
7620
5630
2040
.59.
620
1335
98.7
GM
10-0
1a_1
8524
6.7
322.
326
6.7
1.21
6700
003.
997
0.26
0.10
840.
0043
0.12
320.
002
6.34
60.
086
0.37
350.
0084
0.69
8725
320
8079
2001
2920
2412
2045
3910
1.0
GM
10-0
1a_1
8670
.813
3.3
56.7
2.35
2600
008.
130.
570.
1503
0.00
760.
1922
0.00
3714
.47
0.29
0.54
570.
014
0.67
0262
928
2913
027
5932
2779
1928
0657
101.
0G
M10
-01a
_187
179
1402
232
6.04
1800
000
17.9
91.
20.
0916
0.00
640.
1209
0.00
244.
960.
160.
2969
0.01
10.
8447
432
1770
120
1968
3518
1127
1675
5392.5
GM
10-0
1a_1
8820
422
720
91.
0970
0000
3.69
30.
240.
1132
0.00
420.
1285
0.00
26.
906
0.06
70.
3879
0.00
780.
6566
932
2167
7620
7427
2098
.68.
621
1336
100.
7G
M10
-01a
_189
172.
121
417
91.
2020
0000
4.05
0.29
0.11
150.
0042
0.13
20.
002
7.03
30.
068
0.38
420.
0078
0.70
3242
621
3676
2122
2621
14.7
8.5
2095
3799.1
GM
10-0
1a_1
9049
.788
.951
.49
1.73
6000
005.
930.
40.
1114
0.00
450.
1264
0.00
226.
790.
10.
3876
0.00
880.
6421
416
2135
8220
4432
2083
1321
1141
101.
3G
M10
-01a
_191
50.9
78.7
55.5
1.42
6000
004.
818
0.31
0.10
650.
0043
0.12
460.
0023
6.43
10.
076
0.37
240.
0079
0.49
6502
520
4478
2018
3220
3510
2040
3710
0.2
GM
10-0
1a_1
9214
1.3
84.6
111.
80.
7610
0000
2.59
90.
160.
1448
0.00
550.
185
0.00
2913
.12
0.16
0.51
140.
011
0.69
6987
427
3297
2697
2726
8712
2662
4699.1
GM
10-0
1a_1
9394
9966
.61.
4910
0000
05.
390.
470.
1667
0.00
760.
1715
0.00
2912
.02
0.18
0.50
730.
011
0.62
9003
131
1213
025
6928
2606
1426
4447
101.
5G
M10
-01a
_194
93.6
334.
110
1.3
3.30
1100
0011
.09
0.7
0.10
550.
004
0.12
163
0.00
186.
133
0.05
40.
3641
0.00
730.
7378
134
2028
7419
7826
1994
.27.
720
0134
100.
3G
M10
-01a
_196
269.
623
6.4
287.
80.
8220
0000
2.72
90.
170.
1068
0.00
390.
1227
0.00
196.
212
0.06
10.
3645
0.00
720.
6362
553
2051
7219
9628
2005
.38.
520
0334
99.9
GM
10-0
1a_1
9713
8.3
225
263
0.86
1600
003.
167
0.21
0.06
140.
0033
0.14
640.
0048
4.87
0.15
0.24
30.
012
0.76
0131
712
0462
2296
5717
9526
1400
6078.0
GM
10-0
1a_1
9820
7.7
366
227
1.61
1000
000
5.34
0.34
0.10
510.
0041
0.12
320.
002
6.12
50.
065
0.35
950.
0077
0.67
7173
2020
7520
0431
1993
9.3
1979
3799.3
GM
10-0
1a_1
9920
8.4
170
158.
41.
0711
0000
3.87
0.33
0.15
010.
0056
0.18
950.
003
14.8
60.
240.
5662
0.01
40.
7782
812
2826
9827
3526
2806
1528
8956
103.
0G
M10
-01a
_200
167.
817
414
0.6
1.24
2700
004.
166
0.26
0.13
730.
0052
0.16
380.
0025
10.7
060.
088
0.47
220.
0096
0.74
1858
126
0092
2492
2624
97.2
7.7
2493
4299.8
GM
10-0
1a_2
0118
4.2
909
187.
24.
8640
0000
14.7
60.
970.
1122
0.00
420.
1257
90.
0018
6.08
90.
075
0.34
920.
0074
0.75
8608
521
5075
2038
2519
8711
1930
3597.1
GM
10-0
1a_2
0225
426
4.9
174.
21.
5280
0000
5.34
20.
340.
1677
0.00
630.
2232
0.00
3318
.28
0.15
0.59
110.
012
0.78
3008
831
3311
030
0223
3005
.17.
729
9348
99.6
GM
10-0
1a_2
0313
5.6
206
113.
91.
8118
0000
6.2
0.39
0.13
750.
0053
0.16
740.
0025
11.2
20.
110.
4849
0.00
990.
7242
1326
0394
2529
2625
40.9
9.2
2548
4310
0.3
GM
10-0
1a_2
0419
863
427
22.
3393
0000
10.1
60.
70.
0846
0.00
340.
1266
0.00
196.
266
0.06
80.
3573
0.00
720.
6827
228
1640
6320
4927
2012
.69.
519
6934
97.8
GM
10-0
1a_2
0672
.915
357
.72.
6512
0000
9.38
0.63
0.14
850.
0062
0.18
770.
0034
13.8
60.
230.
5349
0.01
20.
6051
167
2797
110
2718
3127
3816
2767
4910
1.1
GM
10-0
1a_2
0721
735
523
81.
4964
0000
5.00
60.
320.
1073
0.00
410.
1298
0.00
226.
701
0.08
60.
3745
0.00
840.
6609
666
2060
7420
9330
2072
1120
5039
98.9
GM
10-0
1a_2
0914
5.6
40.5
113.
90.
3616
000
1.26
90.
081
0.14
890.
0057
0.18
930.
0033
13.7
40.
160.
5253
0.01
10.
5540
467
2804
100
2735
3027
3412
2721
4799.5
Prim
ary
refe
renc
e m
ater
ial5
9150
0 (n
=34)
16.0
996
.51
34.3
62.
8112
5919
9.41
140.
722
0.05
423
0.00
310.
0748
40.
0022
21.
8572
0.04
650.
1796
50.
0042
40.
2558
8210
68.9
12.6
1056
.910
.710
63.9
3.2
1065
.45.
0
Seco
ndar
y re
fere
nce
mat
eria
l(s)5
FC1
(n=1
5)17
6.27
417.
6528
0.48
1.49
4904
754.
9564
0.33
20.
0397
60.
0015
60.
0670
10.
0013
41.
2713
0.01
920.
1283
80.
0027
60.
4430
287
1099
.810
.311
08.9
6.7
1094
.12.
110
82.5
5.4
R33
(n=1
3)34
.90
265.
2519
1.02
1.39
7528
04.
8899
0.35
0.02
132
0.00
093
0.05
586
0.00
143
0.51
850.
0112
0.06
735
0.00
146
0.30
2341
426.
55.
142
6.5
12.3
423.
22.
042
1.4
2.4
1 U–T
h–Pb
conc
entr
atio
ns re
fere
nced
to ei
ther
NIS
T 61
2 gl
ass o
r 915
00 zi
rcon
; con
cent
ratio
n un
cert
aint
y ap
prox
imat
ely
± 20
%.
2 Isot
ope r
atio
s not
corr
ecte
d fo
r com
mon
Pb.
3 Dat
es ca
lcul
ated
with
dec
ay co
nsta
nts o
f Jaf
fey
et a
l. (1
971)
and
238 U
/235 U
= 1
37.8
18 (H
iess
et a
l. 2
012)
usin
g Io
lite v
. 3.5
(Pat
on et
al.
201
1) a
nd U
–Pb
Geo
chro
n4 D
RS (P
aton
et a
l. 2
010)
.
Pre
ferr
ed d
ates
use
d in
plo
ts a
re 2
06/2
38 d
ates
less
than
700
Ma
and
207/
206
date
s gre
ater
than
700
Ma.
4 Disc
orda
nce c
alcu
late
d as
(1-(
206 Pb
/238 U
age
/ 20
7 Pb/23
5 U a
ge))
*100
.5 C
once
ntra
tion
data
are
mea
ns o
f all
anla
yses
; dat
es a
nd is
otop
e rat
ios a
re w
eigh
ted
mea
ns o
f all
anal
yses
<2%
disc
orda
nt
Ave
rage
repr
oduc
ibili
ty o
f ind
ivid
ual U
–Pb
date
s fro
m p
rimar
y re
fere
nce m
ater
ial i
s bet
ter t
han
0.7%
(red
uced
sepa
rate
ly a
s unk
now
ns) a
nd a
vera
ge a
ccur
acy
of se
cond
ary
refe
renc
e mat
eria
l is 1
.5%
or b
ette
r.±2σ2
206 Pb
/ 23
8 U±2σ2
%
con
208 Pb
/2
32Th
±2σ2
207 Pb
/2
06Pb
±2σ2
207 Pb
/ 23
5 U
207 Pb
/ 23
5 U±2σ2
206 Pb
/ 23
8 U±2σ2
Rho3
Mea
sure
d co
ncen
trat
ions
1Is
otop
ic ra
tios
Cal
cula
ted
age
s (M
a)
±2σ2
207 Pb
/ 20
6 Pb±2σ2
Ana
lysis
Id
entif
ier
Pb
(ppm
)U
(p
pm)
Th
(ppm
)U
/Th
206 Pb
/
204 Pb
208 Pb
/ 20
6 Pb±2σ2
208 Pb
/ 23
2 Th
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 311
Tabl
e A
3. U
–Pb
geoc
hron
olog
ic d
ata
for s
ampl
es B
L15-
01, N
B16-
356,
and
NB1
6-35
8 ru
n at
the U
nive
rsity
of N
ew B
runs
wic
k (a
naly
st D
eann
e van
Roo
yen)
.
NB1
6-35
6A a
nd N
B16-
356B
Lon
g Po
nd B
ay F
orm
atio
n (U
TM -
674
199E
, 494
7299
N; G
rid
Zone
19T
)17
4100
000
4.9
0.8
6.4
2014
7014
1697
.69
11.
843
0.08
80.
152
0.00
30.
070
0.08
890.
0040
1376
8210
5631
911
1764
.117
4000
000
8.9
2.7
3.3
470
429
140
87.2
93
1.72
00.
250
0.16
30.
004
0.68
60.
0754
0.00
8511
6019
099
399
971
2480
.610
6900
000
6.2
7.1
0.9
5818
3126
792
.97
11.
547
0.07
20.
097
0.00
20.
436
0.11
320.
0045
1849
6895
131
598
1262
.916
8300
000
5.0
3.9
1.3
122
2621
159
88.6
92
0.82
00.
340
0.09
60.
004
0.87
40.
0550
0.02
3014
8032
054
018
059
025
109.
317
5500
000
1.8
1.3
1.4
212
600
3288
97.3
71
1.01
00.
062
0.09
20.
002
0.01
70.
0796
0.00
4711
5012
070
132
565
1280
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8700
000
14.5
3.1
4.6
311
367
4523
398
.17
13.
375
0.08
40.
238
0.00
40.
699
0.10
330.
0013
1682
2314
9720
1376
2179
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8200
000
16.5
0.9
19.4
1117
155
7827
99.5
21
1.23
40.
037
0.13
00.
003
0.50
00.
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0.00
1591
945
816
1778
814
83.8
1651
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011
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272
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2839
603
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11
1.23
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060
0.10
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003
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0.00
3613
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2764
315
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015
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610
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122
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644
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400.
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1460
200
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100
739
2178
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3240
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300
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102
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450
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0095
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190
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611
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434
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142
1114
387
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890
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102
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503
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644
6762
812
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813
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4680
538
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83
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470
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004
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122
94.1
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62.
923
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140
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151
0.00
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863
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0230
1820
240
1240
120
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3942
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000
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2.9
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629
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30.
800
1.40
00.
111
0.01
20.
858
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200
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0024
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6036
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768
63.9
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0000
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60.
72.
460
568
1139
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03
4.00
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400
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013
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0.03
3020
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4025
014
5465
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221
433
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000
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106
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190
674
9264
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1828
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196
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1712
120
9399
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11.
004
0.03
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108
0.00
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178
0.06
860.
0021
873
6370
518
659
1193
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2700
000
8.3
2.0
4.1
5924
4171
097
.45
11.
520
0.11
00.
128
0.00
40.
895
0.08
730.
0036
1354
7993
342
776
2354
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2500
000
11.6
1.5
7.7
7414
1987
497
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11.
918
0.05
40.
150
0.00
30.
092
0.09
260.
0019
1470
3910
8519
898
1558
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1400
000
20.6
0.9
23.4
399
359
257
92.7
43
1.08
50.
072
0.11
90.
002
0.58
50.
0653
0.00
3683
498
736
3772
513
98.5
1937
0000
012
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249
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2754
2484
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91
3.66
00.
093
0.25
20.
006
0.43
60.
1077
0.00
1917
5931
1562
2014
5028
78.7
1746
0000
02.
52.
21.
133
330
948
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03
0.99
00.
740
0.11
70.
006
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10.
0570
0.03
6019
5036
068
037
071
136
104.
618
3900
000
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0.0
150.
411
1412
727
8299
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10.
939
0.03
60.
109
0.00
20.
361
0.06
310.
0020
697
6867
119
668
1399
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4200
000
1.3
0.7
1.8
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4310
99.0
91
0.82
90.
051
0.09
30.
002
0.01
50.
0642
0.00
3968
013
060
528
573
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000
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111
943
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01
0.87
90.
039
0.09
10.
002
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637
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1680
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011
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334
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1134
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01
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80.
026
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002
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0.00
1392
839
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1362
310
89.5
1475
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918
4397
570
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83
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520
0.31
60.
008
0.56
70.
1328
0.00
7521
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1917
8317
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81.5
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11.
313
618
1381
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93
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510
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90.
0340
0.03
5019
2030
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027
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929
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45.
41.
031
129
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93
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360
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017
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220
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012
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111
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8616
1958
496
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315
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110
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029
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680.
0026
1331
5985
018
670
1078
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000
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012
n.d.
2331
099
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10.
910
0.03
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106
0.00
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109
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290.
0020
682
7165
617
647
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1000
000
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3.4
111
1100
2575
099
.54
11.
731
0.05
10.
170
0.00
30.
227
0.07
380.
0017
1021
4710
1819
1010
1699
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5000
000
13.0
0.9
13.8
1233
575
7977
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31.
870
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160
0.00
50.
630
0.08
660.
0081
1360
170
1053
120
956
3066
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8400
000
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5.1
2.9
504
418
274
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43
3.42
00.
170
0.23
60.
006
0.62
90.
1053
0.00
2817
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1503
4013
6530
78.4
1633
0000
013
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528
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9-1
2658
620
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41
1.19
60.
038
0.11
90.
002
0.64
30.
0722
0.00
1498
040
796
1872
712
91.4
1622
0000
01.
71.
21.
49
1011
166
699
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10.
841
0.05
40.
099
0.00
20.
181
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190.
0038
590
130
612
3060
812
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1437
0000
06.
80.
153
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15-5
0025
060
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21
0.97
50.
044
0.10
60.
002
0.38
00.
0654
0.00
2676
287
689
2364
811
94.0
NB1
6-35
6B-0
1N
B16-
356B
-02
NB1
6-35
6B-0
3N
B16-
356B
-04
NB1
6-35
6B-0
5N
B16-
356B
-06
NB1
6-35
6B-0
8N
B16-
356B
-09
NB1
6-35
6B-1
0N
B16-
356B
-11
NB1
6-35
6B-1
3N
B16-
356B
-14
NB1
6-35
6B-1
5N
B16-
356B
-16
NB1
6-35
6B-1
7N
B16-
356B
-18
NB1
6-35
6B-1
9N
B16-
356B
-20
NB1
6-35
6B-2
1N
B16-
356B
-22
NB1
6-35
6B-2
3N
B16-
356B
-24
NB1
6-35
6B-2
5N
B16-
356B
-26
NB1
6-35
6B-2
7N
B16-
356B
-28
NB1
6-35
6B-2
9N
B16-
356B
-30
NB1
6-35
6B-3
1N
B16-
356B
-32
NB1
6-35
6B-3
3N
B16-
356B
-34
NB1
6-35
6B-3
5N
B16-
356B
-36
NB1
6-35
6B-3
7N
B16-
356B
-38
NB1
6-35
6B-3
9N
B16-
356B
-40
1399
0000
010
.91.
011
.173
1521
573
96.9
31
1.37
20.
051
0.11
40.
002
0.37
50.
0856
0.00
2613
1659
875
2269
811
79.7
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)%
co
n
Cal
cula
ted
ages
(Ma)
Isot
opic
ratio
sM
easu
red
conc
entr
atio
ns
207 Pb
/20
6 Pb±2
σ20
7 Pb/
235 U
±2σ
±2σ
206 Pb
/ 23
8 U
206 Pb
/ 23
8 U±2
σρ
207 Pb
/ 20
6 Pb±2
σTh
/UC
420
7 Pb/
235 U
±2σ
204 Pb
(c
ps)
±2σ
%
erro
r
206 Pb
/ 20
4 Pb2
%Pb
3
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 312
Tabl
e A
3. C
ontin
ued. 17
8800
000
2.4
1.0
2.5
2617
6576
398
.55
12.
840
0.13
00.
217
0.00
60.
594
0.09
610.
0032
1538
6113
6033
1267
2980
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8600
000
3.2
3.0
1.1
150
2718
6674
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30.
310
0.54
00.
089
0.00
50.
892
0.01
500.
0400
1650
410
390
320
546
3114
0.0
1606
0000
010
.20.
616
.96
915
575
2199
.32
11.
064
0.02
70.
114
0.00
20.
370
0.06
740.
0012
853
3673
513
694
1194
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3500
000
4.2
3.3
1.3
6924
3524
093
.45
11.
595
0.07
60.
103
0.00
20.
144
0.11
520.
0050
1865
8196
530
629
1465
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8000
000
14.2
1.9
7.4
970
130
1369
76.0
03
0.93
00.
160
0.10
40.
002
0.71
20.
0679
0.00
9512
2017
065
878
637
1196
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3200
000
7.3
0.7
10.2
281
269
135
87.3
63
1.16
00.
240
0.12
90.
004
0.40
30.
0636
0.00
8411
2015
074
312
078
225
57.7
1273
0000
08.
58.
91.
024
526
1111
083
.80
30.
750
0.16
00.
094
0.00
20.
767
0.05
900.
0110
1350
150
543
9357
713
106.
217
2600
000
5.6
2.5
2.2
412
300
6028
99.7
81
0.96
90.
030
0.11
40.
002
0.29
60.
0622
0.00
1566
752
687
1569
512
101.
118
0300
000
28.5
9.2
3.1
9224
2612
7698
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11.
057
0.03
40.
105
0.00
20.
335
0.07
360.
0016
1021
4573
117
645
988
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4700
000
23.5
0.2
125.
221
2813
348
4399
.47
10.
945
0.03
50.
107
0.00
20.
100
0.06
610.
0023
799
7367
518
652
1296
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2900
000
10.0
3.3
3.1
7732
4276
197
.50
12.
984
0.10
00.
212
0.00
50.
133
0.10
500.
0035
1708
6014
0225
1239
2468
.216
1800
000
12.5
2.9
4.3
9923
2370
995
.67
12.
215
0.07
90.
155
0.00
50.
250
0.10
560.
0045
1693
7611
8224
929
2651
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7600
000
11.2
0.9
12.8
1023
707
6671
.38
31.
770
0.44
00.
138
0.00
40.
740
0.08
900.
0150
1510
250
960
190
835
2351
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9600
000
16.9
6.7
2.5
116
1614
1334
96.7
33
3.26
00.
140
0.23
00.
004
0.66
00.
1041
0.00
2016
9336
1473
3113
3322
75.9
1332
0000
087
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.21.
632
6020
06
7776
.05
30.
688
0.12
00.
077
0.00
20.
553
0.06
500.
0077
970
170
531
6348
010
90.3
1758
0000
019
.80.
540
.287
1720
1051
97.9
61
1.29
40.
044
0.11
80.
002
0.26
40.
0799
0.00
2011
8250
841
2071
911
85.5
1684
0000
016
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85.
777
1418
861
97.9
81
1.17
00.
028
0.10
90.
002
0.44
10.
0781
0.00
1111
4427
786
1366
710
84.8
1732
0000
08.
30.
191
.813
1185
2502
99.0
91
0.91
50.
028
0.09
90.
002
0.32
40.
0668
0.00
1681
449
658
1561
110
92.8
1099
0000
015
4.1
110.
11.
4-7
11-1
57-5
113
99.7
61
4.68
20.
110
0.31
840.
0053
0.40
70.
1067
0.00
2417
3742
1764
1917
8226
96.7
9310
0000
506.
431
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.39
2022
210
726
99.0
21
4.01
90.
099
0.27
630.
0044
0.39
40.
1048
0.00
2517
0844
1637
2015
7322
91.8
1154
0000
045
8.0
8.8
52.0
412
300
9100
99.7
31
0.90
70.
026
0.10
680.
0019
0.19
70.
0620
0.00
1766
758
655
1465
411
99.8
1100
0000
043
7.7
193.
92.
353
1732
1496
99.1
61
3.29
00.
130
0.24
520.
0055
0.92
70.
0965
0.00
2515
4748
1470
3014
1329
91.7
1042
0000
045
9.0
184.
62.
5-7
11-1
57-1
7800
99.7
51
6.45
00.
180
0.37
240.
0086
0.91
60.
1246
0.00
2520
2236
2041
2320
4041
98.0
1101
0000
051
0.0
1.9
264.
22
1260
020
500
99.7
91
0.92
60.
025
0.10
980.
0017
0.32
50.
0610
0.00
1662
757
664
1367
110
101.
172
0000
0033
7.7
247.
71.
411
515
1315
288
.58
30.
720
0.22
00.
0953
0.00
300.
754
0.04
800.
0170
1450
220
430
150
586
1813
6.3
1078
0000
055
.942
.81.
37
1014
359
599
.73
10.
862
0.05
70.
1033
0.00
230.
030
0.06
090.
0042
530
140
621
3263
313
101.
910
7800
000
123.
183
.01.
5-5
12-2
40-1
990
99.6
71
0.91
20.
038
0.10
930.
0021
0.27
80.
0604
0.00
2557
689
654
2066
912
102.
295
4000
0016
1.7
143.
71.
1-9
17-1
89-1
278
98.8
71
0.95
60.
053
0.10
100.
0027
0.34
70.
0685
0.00
3885
011
067
828
620
1691
.496
4000
0031
0.7
163.
21.
919
1579
2303
99.7
71
2.17
80.
071
0.19
960.
0047
0.76
30.
0789
0.00
2011
6450
1172
2311
7326
98.5
1090
0000
014
0.1
118.
11.
21
1111
0010
480
99.7
21
0.86
20.
037
0.10
280.
0019
0.08
70.
0610
0.00
2859
097
627
2163
111
100.
610
7800
000
178.
019
1.4
0.9
69
134
2094
99.5
71
0.86
80.
033
0.10
260.
0018
0.01
20.
0616
0.00
2562
089
632
1863
011
99.6
1080
0000
019
1.1
252.
90.
86
1220
023
7599
.65
10.
840
0.03
00.
1013
0.00
170.
060
0.06
010.
0022
585
8161
716
622
1010
0.8
1089
0000
040
8.9
246.
81.
7-3
10-3
33-1
9827
99.7
71
2.13
50.
047
0.19
740.
0030
0.29
10.
0783
0.00
1711
5246
1159
1511
6116
98.8
9590
0000
104.
841
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5-4
13-3
25-2
715
98.9
51
1.49
60.
078
0.14
730.
0042
0.41
00.
0738
0.00
3610
2295
923
3288
524
86.2
1084
0000
034
4.0
509.
00.
7-7
10-1
43-3
457
99.7
01
0.83
70.
025
0.10
060.
0019
0.19
40.
0604
0.00
1960
571
616
1461
811
100.
312
9100
000
566.
686
2.0
0.7
9918
1846
596
.20
30.
790
0.11
00.
0967
0.00
190.
510
0.05
920.
0080
800
180
595
5659
511
100.
010
6100
000
75.0
73.4
1.0
1011
110
1948
99.2
41
6.29
00.
170
0.36
340.
0063
0.48
20.
1268
0.00
3420
5046
2019
2619
9830
96.3
NB1
6-35
6B-4
1N
B16-
356B
-42
NB1
6-35
6B-4
3N
B16-
356B
-44
NB1
6-35
6B-4
5N
B16-
356B
-46
NB1
6-35
6B-4
7N
B16-
356B
-48
NB1
6-35
6B-4
9N
B16-
356B
-50
NB1
6-35
6B-5
1N
B16-
356B
-52
NB1
6-35
6B-5
3N
B16-
356B
-54
NB1
6-35
6B-5
5N
B16-
356B
-56
NB1
6-35
6B-5
7N
B16-
356B
-58
1058
0000
046
.30.
589
.03
1136
713
3099
.90
11.
024
0.06
40.
1202
0.00
320.
140
0.06
180.
0040
590
130
705
3273
119
103.
7
206 Pb
/ 23
8 U±2
σ%
co
n±2
σ20
7 Pb/
206 Pb
±2σ
207 Pb
/ 23
5 U±2
σ±2
σ20
6 Pb/
238 U
±2σ
ρ20
7 Pb/
206 Pb
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)Th
/U20
4 Pb
(cps
)±2
σ%
er
ror
206 Pb
/ 20
4 Pb2
%Pb
3C
420
7 Pb/
235 U
NB1
6-35
6A-0
1N
B16-
356A
-02
NB1
6-35
6A-0
3N
B16-
356A
-04
NB1
6-35
6A-0
5N
B16-
356A
-06
NB1
6-35
6A-0
7N
B16-
356A
-08
NB1
6-35
6A-0
9N
B16-
356A
-10
NB1
6-35
6A-1
1N
B16-
356A
-12
NB1
6-35
6A-1
3N
B16-
356A
-14
NB1
6-35
6A-1
5N
B16-
356A
-16
NB1
6-35
6A-1
7N
B16-
356A
-18
NB1
6-35
6A-1
9N
B16-
356A
-20
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 313
Tabl
e A
3. C
ontin
ued.
1090
0000
076
.360
.21.
310
1212
057
699
.49
10.
876
0.04
50.
1029
0.00
220.
052
0.06
210.
0033
610
110
633
2463
113
99.7
8830
0000
433.
630
4.7
1.4
2718
6710
9098
.65
11.
019
0.03
60.
1042
0.00
190.
050
0.07
110.
0027
960
7471
617
639
1189
.210
8800
000
1097
.012
.091
.63
1240
030
620
99.8
91
0.99
10.
020
0.11
500.
0017
0.49
50.
0627
0.00
1269
542
699
1070
210
100.
490
1000
0045
2.0
18.5
24.4
1514
9325
1399
.34
11.
218
0.04
10.
1268
0.00
250.
283
0.06
960.
0024
900
7180
719
769
1485
.410
8300
000
100.
744
.42.
30
11n.
d.n.
d.99
.73
14.
051
0.11
00.
2989
0.00
520.
237
0.09
880.
0026
1591
5016
4122
1685
2693
.210
8900
000
58.8
32.4
1.8
-810
-131
-583
99.5
51
0.87
00.
050
0.10
140.
0023
0.25
90.
0626
0.00
3662
012
062
827
622
1399
.010
9400
000
304.
324
1.4
1.3
-12
12-1
00-1
899
99.6
11
0.85
10.
025
0.10
140.
0016
0.16
00.
0612
0.00
1862
664
624
1462
39
99.8
1103
0000
015
1.1
128.
71.
29
1112
212
6299
.56
10.
869
0.03
00.
1020
0.00
190.
255
0.06
220.
0022
652
7563
316
626
1198
.9
NB1
6-35
6A-2
1N
B16-
356A
-22
NB1
6-35
6A-2
3N
B16-
356A
-24
NB1
6-35
6A-2
5N
B16-
356A
-26
NB1
6-35
6A-2
7N
B16-
356A
-28
NB1
6-35
6A-2
910
8900
000
178.
212
9.2
1.4
-29
-541
-782
999
.29
10.
880
0.03
40.
0994
0.00
190.
060
0.06
430.
0025
730
8763
818
611
1195
.7N
B16-
356A
-29b
-110
9000
000
81.1
55.9
1.5
-12
12-1
00-5
3599
.83
10.
898
0.05
50.
1081
0.00
270.
435
0.06
050.
0033
550
110
642
2966
116
103.
011
0400
000
555.
110
.950
.967
1522
696
97.6
91
1.26
10.
044
0.11
240.
0017
0.39
60.
0813
0.00
2612
2565
825
1968
710
83.2
1258
0000
021
8.0
64.1
3.4
817
213
6163
99.1
51
4.25
00.
160
0.28
830.
0079
0.78
00.
1078
0.00
2917
5749
1681
3116
3239
91.5
1093
0000
014
91.0
8.4
176.
914
1179
8864
99.8
41
0.96
60.
019
0.11
210.
0016
0.41
10.
0628
0.00
1269
742
686
1068
510
99.8
1088
0000
096
.356
.01.
7-4
11-2
75-3
533
99.5
81
2.14
40.
077
0.20
080.
0037
0.30
70.
0779
0.00
2811
1770
1158
2511
7920
93.0
1087
0000
015
7.9
233.
00.
7-2
10-5
00-5
820
99.4
71
0.86
90.
031
0.10
200.
0018
0.02
40.
0624
0.00
2564
885
632
1762
611
99.0
1092
0000
032
5.3
93.9
3.5
89
115
4890
99.1
01
1.78
90.
046
0.16
440.
0029
0.61
10.
0792
0.00
1811
7648
1042
1798
116
81.9
1089
0000
015
3.8
80.8
1.9
194
2613
229
94.3
53
5.95
00.
410
0.36
620.
0053
0.57
40.
1168
0.00
7518
8012
019
2964
2011
2589
.210
7300
000
517.
011
0.5
4.7
8616
1952
897
.29
30.
961
0.11
00.
1173
0.00
240.
641
0.05
880.
0067
888
120
659
6471
514
108.
512
5100
000
778.
367
8.1
1.1
3914
3616
5498
.95
11.
027
0.02
70.
1065
0.00
190.
083
0.07
060.
0021
937
6071
714
652
1191
.010
7100
000
122.
911
6.4
1.1
011
n.d.
n.d.
99.8
61
0.88
30.
038
0.10
740.
0023
0.37
10.
0596
0.00
2454
889
638
2065
713
103.
093
4000
0025
1.7
121.
82.
1-1
312
-92
-360
599
.80
13.
585
0.09
60.
2737
0.00
510.
403
0.09
540.
0025
1530
4815
4521
1559
2697
.910
7500
000
139.
610
2.9
1.4
-15
11-7
3-1
434
99.7
01
2.36
30.
063
0.21
300.
0037
0.39
30.
0813
0.00
2212
1752
1229
1912
4420
97.9
1074
0000
041
4.9
611.
00.
740
1640
888
98.0
11
1.29
50.
047
0.11
830.
0019
0.40
20.
0797
0.00
2811
6567
840
2172
111
85.8
1056
0000
015
8.5
139.
51.
1-2
13-6
50-5
775
99.6
41
0.86
30.
036
0.10
300.
0019
0.29
00.
0615
0.00
2661
589
628
1963
211
100.
710
8600
000
79.5
30.8
2.6
-13
11-8
5-1
265
99.3
21
3.95
10.
110
0.28
280.
0052
0.27
20.
1021
0.00
2916
5153
1624
2216
0526
96.8
1212
0000
024
2.5
97.4
2.5
-312
-400
-141
4099
.55
12.
698
0.07
10.
2269
0.00
410.
343
0.08
700.
0023
1353
5213
2720
1318
2296
.710
8100
000
645.
030
.121
.46
1220
010
400
99.8
11
1.17
90.
026
0.13
150.
0020
0.30
40.
0654
0.00
1577
849
790
1279
612
97.6
NB1
6-35
6A-3
0N
B16-
356A
-31
NB1
6-35
6A-3
2N
B16-
356A
-33
NB1
6-35
6A-3
4N
B16-
356A
-35
NB1
6-35
6A-3
6N
B16-
356A
-37
NB1
6-35
6A-3
8N
B16-
356A
-39
NB1
6-35
6A-4
0N
B16-
356A
-41
NB1
6-35
6A-4
2N
B16-
356A
-43
NB1
6-35
6A-4
4N
B16-
356A
-45
NB1
6-35
6A-4
6N
B16-
356A
-47
1064
0000
075
.630
.82.
512
1192
943
99.3
61
2.28
80.
088
0.20
740.
0040
0.03
50.
0806
0.00
3211
7776
1202
2712
1421
95.4
NB1
6-35
6A-4
7b-1
1078
0000
015
4.4
23.7
6.5
111
1100
2256
099
.59
12.
183
0.06
20.
2006
0.00
320.
068
0.07
940.
0024
1164
6011
7320
1179
1798
.310
6800
000
519.
020
2.6
2.6
1100
110
1096
83.1
03
2.96
00.
180
0.23
330.
0043
0.63
50.
0903
0.00
5114
4195
1382
4813
5123
94.4
1077
0000
019
4.9
53.0
3.7
-410
-249
-470
899
.60
11.
159
0.03
50.
1297
0.00
230.
184
0.06
510.
0020
758
6577
916
786
1395
.610
8000
000
436.
211
0.6
3.9
111
1100
5990
099
.75
11.
990
0.07
30.
1876
0.00
520.
896
0.07
690.
0018
1110
4811
0625
1107
2899
.712
5400
000
269.
417
0.7
1.6
1015
150
6700
99.7
31
4.72
60.
120
0.31
660.
0061
0.51
10.
1088
0.00
2717
7645
1770
2217
7330
99.5
1088
0000
095
.248
.82.
07
1115
710
1199
.62
10.
841
0.04
40.
1010
0.00
190.
050
0.06
020.
0032
580
110
614
2562
011
101.
010
8100
000
122.
290
.71.
3-3
10-3
33-3
047
99.5
01
0.90
10.
038
0.10
470.
0020
0.37
40.
0629
0.00
2666
588
652
2164
212
98.4
1078
0000
040
1.1
90.5
4.4
810
128
7560
99.8
11
2.07
90.
047
0.19
520.
0033
0.42
40.
0773
0.00
1811
2843
1140
1611
4918
97.9
1068
0000
029
7.9
224.
51.
3-4
10-2
50-1
7500
99.7
01
5.03
40.
110
0.32
560.
0052
0.20
90.
1122
0.00
2318
3236
1824
1818
1725
99.2
8860
0000
877.
039
.422
.322
1673
3427
99.7
51
1.18
00.
037
0.13
000.
0022
0.28
00.
0653
0.00
2077
668
790
1779
115
97.2
NB1
6-35
6A-4
8N
B16-
356A
-49
NB1
6-35
6A-5
0N
B16-
356A
-51
NB1
6-35
6A-5
2N
B16-
356A
-53
NB1
6-35
6A-5
4N
B16-
356A
-55
NB1
6-35
6A-5
6N
B16-
356A
-57
1075
0000
013
5.2
78.7
1.7
711
157
7014
98.4
11
####
#0.
270
0.49
790.
0082
0.64
70.
1907
0.00
3827
4632
2687
2026
0435
94.1
%
con
±2σ
207 Pb
/ 23
5 U±2
σ20
6 Pb/
238 U
±2σ
±2σ
ρ20
7 Pb/
206 Pb
C4
207 Pb
/23
5 U±2
σ20
6 Pb/
238 U
Th/U
204 Pb
(c
ps)
±2σ
%
erro
r
206 Pb
/ 20
4 Pb2
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
±2σ
207 Pb
/20
6 Pb%
Pb3
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 314
Tabl
e A
3. C
ontin
ued. 10
6300
000
134.
913
8.8
1.0
811
138
1259
99.8
61
0.85
00.
039
0.10
350.
0021
0.32
70.
0595
0.00
2654
294
620
2163
512
102.
412
1500
000
161.
087
.61.
8-9
14-1
56-1
500
99.4
91
0.95
50.
045
0.11
010.
0025
0.07
30.
0632
0.00
3267
011
067
823
673
1499
.312
9700
000
494.
013
.137
.716
2012
526
2599
.49
10.
964
0.03
70.
1089
0.00
210.
145
0.06
430.
0025
737
8668
419
666
1297
.490
1000
0024
4.3
189.
41.
321
1990
2781
99.6
51
5.88
00.
170
0.35
540.
0068
0.39
80.
1201
0.00
3419
5350
1957
2519
6032
99.4
1322
0000
067
8.0
14.5
46.8
522
440
1166
099
.69
10.
920
0.04
10.
1080
0.00
200.
052
0.06
110.
0030
661
8966
122
661
1210
0.0
1047
0000
011
8.1
111.
31.
18
1113
811
1499
.62
10.
940
0.04
30.
1082
0.00
190.
282
0.06
270.
0027
648
9566
822
662
1199
.212
3900
000
510.
028
.018
.239
961
1513
586
.00
31.
200
0.17
00.
1194
0.00
260.
592
0.07
080.
0094
1140
170
787
7572
715
92.4
1303
0000
076
1.0
45.3
16.8
2217
7731
8699
.23
11.
087
0.03
50.
1146
0.00
260.
455
0.06
870.
0020
886
6074
617
699
1593
.788
7000
0011
8.0
82.0
1.4
187
2312
140
90.4
03
4.12
00.
700
0.30
300.
0110
0.67
30.
0950
0.01
6015
9027
015
9015
017
0553
91.2
1069
0000
067
.042
.31.
64
1025
012
2599
.76
10.
837
0.04
60.
1016
0.00
230.
080
0.05
980.
0034
520
120
611
2662
413
102.
110
6800
000
167.
797
.11.
7-1
11-1
100
-346
0099
.67
13.
978
0.08
70.
2881
0.00
460.
306
0.09
950.
0022
1609
4216
2818
1632
2397
.410
9100
000
234.
623
4.3
1.0
-99
-109
-221
499
.67
10.
931
0.03
10.
1106
0.00
210.
441
0.06
080.
0019
609
6866
616
676
1210
1.5
1076
0000
031
7.7
338.
70.
90
10n.
d.n.
d.99
.65
10.
861
0.02
30.
1021
0.00
160.
276
0.06
110.
0017
636
6163
213
627
1099
.210
6200
000
86.0
30.0
2.9
1210
8318
3598
.87
16.
510
0.17
00.
3599
0.00
670.
532
0.13
050.
0033
2097
4420
4323
1981
3294
.510
3900
000
60.6
38.6
1.6
1310
7734
999
.15
10.
975
0.05
30.
1075
0.00
250.
137
0.06
620.
0038
730
120
688
2865
815
95.6
1134
0000
064
.574
.30.
9-2
15-7
50-2
510
99.3
51
0.93
40.
069
0.10
770.
0039
0.18
90.
0632
0.00
4964
016
066
436
659
2399
.210
4900
000
205.
659
.73.
45
1224
038
4499
.51
11.
233
0.04
30.
1319
0.00
240.
525
0.06
710.
0020
839
6881
219
798
1496
.011
1900
000
227.
728
1.0
0.8
2513
5267
998
.71
10.
968
0.04
30.
1010
0.00
180.
025
0.06
940.
0032
869
9568
422
620
1090
.691
8000
0014
2.5
155.
30.
912
1210
081
099
.24
10.
896
0.04
50.
1029
0.00
240.
111
0.06
380.
0037
680
120
646
2463
114
97.7
1096
0000
011
3.5
93.4
1.2
310
333
2970
99.5
91
0.91
60.
042
0.10
670.
0023
0.34
30.
0620
0.00
2762
693
655
2265
313
99.7
9340
0000
222.
062
.03.
64
1537
511
850
97.8
91
5.44
00.
210
0.31
360.
0081
0.83
50.
1252
0.00
3120
2844
1887
3317
5740
85.4
1293
0000
079
4.0
8.4
94.5
248
7229
294
93.8
02
0.98
00.
130
0.11
040.
0019
0.43
80.
0655
0.00
6888
015
069
756
675
1196
.910
6000
000
255.
011
5.2
2.2
813
163
7185
99.9
21
4.65
60.
099
0.31
710.
0048
0.40
30.
1060
0.00
2317
2839
1758
1817
7523
96.2
1274
0000
023
2.6
141.
91.
6-1
420
-143
-120
499
.73
10.
760
0.04
10.
0930
0.00
200.
177
0.05
930.
0033
550
120
572
2457
312
100.
2
NB1
6-35
6A-5
8N
B16-
356A
-59
NB1
6-35
6A-6
0N
B16-
356A
-60a
NB1
6-35
6A-6
1N
B16-
356A
-62
NB1
6-35
6A-6
3N
B16-
356A
-64
NB1
6-35
6A-6
5N
B16-
356A
-66
NB1
6-35
6A-6
7N
B16-
356A
-68
NB1
6-35
6A-6
9N
B16-
356A
-70
NB1
6-35
6A-7
1N
B16-
356A
-72
NB1
6-35
6A-7
3N
B16-
356A
-74
NB1
6-35
6A-7
5N
B16-
356A
-76
NB1
6-35
6A-7
7N
B16-
356A
-78
NB1
6-35
6A-7
9N
B16-
356A
-80
NB1
6-35
6A-8
110
5400
000
675.
050
.613
.341
1332
1505
99.1
31
1.29
90.
030
0.13
030.
0020
0.30
70.
0718
0.00
1797
948
844
1378
911
80.1
NB1
6-35
6A-8
1b-1
1048
0000
014
3.2
39.7
3.6
012
n.d.
n.d.
99.6
81
2.45
30.
064
0.21
850.
0037
0.30
80.
0812
0.00
2112
1452
1256
1912
7419
93.6
1092
0000
013
1.7
73.1
1.8
-711
-157
-137
699
.58
10.
835
0.03
30.
0999
0.00
190.
177
0.06
040.
0024
578
8661
318
614
1110
0.1
8970
0000
197.
418
7.0
1.1
-415
-375
-323
399
.25
10.
898
0.04
30.
1014
0.00
250.
306
0.06
400.
0030
711
100
648
2362
215
96.0
NB1
6-35
6A-8
2N
B16-
356A
-83
NB1
6-35
6A-8
410
4300
000
54.6
41.3
1.3
-11
10-9
3-3
5999
.32
10.
885
0.05
80.
1007
0.00
230.
197
0.06
360.
0042
630
130
634
3161
814
97.5
NB1
6-35
6A-8
4b-1
1172
0000
063
.255
.21.
115
1493
329
99.6
51
0.87
40.
060
0.10
490.
0031
0.03
90.
0607
0.00
4755
016
063
233
643
1810
1.7
NB1
6-35
8A R
oss I
slan
d Fo
rmat
ion
(UTM
- 6
8061
9E, 4
9441
50N
; Gri
d Zo
ne 1
9T)
1839
0000
068
8.8
740.
00.
98
1113
824
225
99.8
51
4.52
10.
130.
3079
0.01
20.
823
0.10
620.
0008
1734
1417
3324
1730
5899
.917
3700
000
75.3
46.9
1.6
3.1
9.3
300
2132
99.6
81
0.81
20.
050.
0975
0.00
40.
055
0.06
060.
0037
550
120
598
2960
023
100.
317
1500
000
227.
819
3.3
1.2
1414
100
1694
99.7
41
1.00
60.
040.
1154
0.00
50.
398
0.06
320.
0019
700
6370
521
704.
126
99.9
1659
0000
090
.327
.33.
36
1220
027
0899
.68
12.
240.
110.
2064
0.00
80.
494
0.07
870.
003
1158
7011
8835
1209
4594
.717
9700
000
228.
921
1.9
1.1
15.8
9.6
6112
9999
.65
10.
823
0.03
0.09
870.
004
0.21
30.
0605
0.00
1760
258
608
1760
6.6
2299
.816
2900
000
198.
223
0.6
0.9
211
550
8480
99.7
61
0.77
80.
030.
0969
0.00
40.
306
0.05
830.
0018
524
7058
319
596.
322
102.
3
NB1
6-35
8A-0
1N
B16-
358A
-02
NB1
6-35
8A-0
3N
B16-
358A
-04
NB1
6-35
8A-0
5N
B16-
358A
-06
NB1
6-35
8A-0
719
3000
000
409.
88.
150
.77
1318
659
0199
.72
10.
898
0.03
0.10
60.
004
0.40
40.
0617
0.00
1465
349
650
1764
9.5
2399
.9
±2σ
206 Pb
/ 23
8 U±2
σ%
co
n
207 Pb
/ 20
6 Pb±2
σ20
7 Pb/
206 Pb
±2σ
207 Pb
/ 23
5 U
207 Pb
/23
5 U±2
σ20
6 Pb/
238 U
±2σ
ρ
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)Th
/U20
4 Pb
(cps
)±2
σ%
er
ror
206 Pb
/ 20
4 Pb2
%Pb
3C
4
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 315
Tabl
e A
3. C
ontin
ued. 18
1000
000
456.
245
8.4
1.0
1311
8533
8599
.69
10.
891
0.03
0.10
430.
004
0.28
90.
0623
0.00
1467
351
646
1763
9.5
2399
.018
7500
000
730.
012
0.4
6.1
310
333
9133
399
.86
17.
750.
260.
4073
0.01
60.
944
0.13
840.
0013
2206
1621
9930
2202
7399
.616
2700
000
560.
028
8.0
1.9
312
400
3410
099
.96
12.
302
0.07
0.21
220.
008
0.28
60.
0791
0.00
1211
7129
1212
2112
40.4
4293
.817
6800
000
214.
011
8.1
1.8
1213
108
1662
99.6
21
0.85
0.04
0.10
170.
004
0.23
10.
061
0.00
261
469
623
1962
4.5
2310
0.2
2131
0000
041
5.0
199.
52.
128
1864
4221
99.6
91
4.11
90.
130.
292
0.01
20.
591
0.10
290.
0017
1675
3016
5726
1651
5998
.018
7500
000
153.
212
3.1
1.2
2011
5569
599
.51
10.
786
0.04
0.09
460.
004
0.20
20.
0607
0.00
2259
781
589
1958
2.5
2198
.917
5000
000
366.
235
6.7
1.0
9.2
8.1
8812
576
99.7
91
5.83
40.
170.
3541
0.01
30.
699
0.12
010.
0011
1956
1619
5025
1954
6499
.518
0000
000
378.
540
2.5
0.9
1416
114
2100
99.5
51
0.67
80.
030.
0841
0.00
40.
468
0.05
940.
002
564
7252
918
521
2298
.517
8100
000
204.
817
0.7
1.2
-0.4
9.8
-245
0-9
3350
99.6
61
2.16
0.07
0.19
840.
008
0.40
30.
0793
0.00
1511
7037
1166
2311
6741
99.8
1951
0000
043
7.1
132.
23.
32
1365
066
500
98.9
11
5.15
90.
150.
3166
0.01
20.
793
0.11
880.
0008
1937
1318
45.4
2417
7359
89.9
1820
0000
022
5.5
278.
70.
87
1420
028
8399
.67
10.
789
0.04
0.09
520.
004
0.46
50.
0603
0.00
2159
675
589
2058
6.4
2299
.616
9900
000
658.
063
7.0
1.0
15.8
8.8
5635
9599
.72
10.
824
0.03
0.09
80.
004
0.35
30.
0615
0.00
165
334
610.
715
602.
422
98.6
1706
0000
018
3.6
297.
00.
616
1063
979
99.4
71
0.79
70.
030.
0935
0.00
40.
042
0.06
210.
0023
643
8059
320
576.
221
97.2
1586
0000
016
3.9
41.3
4.0
2514
5669
099
.53
11.
030.
050.
1167
0.00
50.
253
0.06
40.
0024
742
7471
724
711
2799
.217
9200
000
82.8
36.2
2.3
2.1
942
920
3699
.72
10.
409
0.03
0.05
390.
002
0.37
30.
0548
0.00
433
015
034
324
338.
413
98.7
1750
0000
068
.114
2.8
0.5
1010
100
596
99.5
51
0.79
0.06
0.09
320.
004
0.25
80.
0614
0.00
458
014
058
433
574.
522
98.4
1825
0000
034
8.4
136.
52.
64.
69.
119
827
893
99.6
11
6.96
80.
20.
3821
0.01
40.
699
0.13
20.
0012
2123
1521
0625
2086
6798
.3
NB1
6-35
8A-0
8N
B16-
358A
-09
NB1
6-35
8A-1
0N
B16-
358A
-11
NB1
6-35
8A-1
2N
B16-
358A
-13
NB1
6-35
8A-1
4N
B16-
358A
-15
NB1
6-35
8A-1
6N
B16-
358A
-17
NB1
6-35
8A-1
8N
B16-
358A
-19
NB1
6-35
8A-2
0N
B16-
358A
-21
NB1
6-35
8A-2
2N
B16-
358A
-23
NB1
6-35
8A-2
4N
B16-
358A
-25
1413
0000
012
9.2
72.8
1.8
1912
6331
293
.47
10.
807
0.06
0.05
590.
003
0.26
10.
1046
0.00
7516
7013
059
536
350.
416
58.9
BL15
-001
Bal
ls L
ake
Form
atio
n (U
TM -
266
288E
, 501
1710
N; G
rid
Zone
20T
)28
0200
000
481.
197
.80.
2-4
1127
5-9
108
99.7
51
0.46
70.
010.
0625
5E-0
40.
191
0.05
350.
0011
340
4738
8.6
739
13
100.
627
1500
000
305.
014
1.7
0.5
1012
120
6250
99.8
31
1.75
10.
020.
1725
0.00
10.
371
0.07
290.
0008
1008
2310
26.9
7.6
1025
.77.
199
.927
3100
000
256.
022
7.0
0.9
-713
186
-467
199
.70
10.
917
0.02
0.10
880.
001
0.30
50.
0611
0.00
1364
344
662
1066
5.4
6.5
100.
525
6800
000
61.3
50.3
0.8
-15
2114
0-9
8799
.49
12.
362
0.1
0.20
860.
004
0.22
50.
0825
0.00
3912
3192
1228
2912
2521
99.8
2892
0000
060
7.0
57.7
0.1
-21
1257
-233
899
.76
10.
499
0.01
0.06
516E
-04
0.22
60.
0553
0.00
1243
544
410.
86.
840
6.8
3.6
99.0
2756
0000
056
7.2
375.
80.
7-4
1127
5-1
1150
99.7
21
0.5
0.01
0.06
595E
-04
0.02
10.
0549
0.00
140
240
411.
45.
641
1.1
3.2
99.9
3056
0000
025
8.2
304.
91.
2-1
023
230
-206
899
.52
10.
508
0.03
0.06
578E
-04
0.16
80.
0557
0.00
2842
011
041
618
410.
34.
898
.625
8600
000
688.
022
2.2
0.3
215
750
2632
599
.76
10.
501
0.01
0.06
616E
-04
0.07
60.
055
0.00
141
144
412
6.2
412.
43.
310
0.1
2687
0000
035
8.1
121.
70.
3-1
517
113
-186
199
.61
10.
505
0.02
0.06
551E
-03
0.22
60.
0563
0.00
1645
362
414.
79.
840
8.9
5.7
98.6
3119
0000
010
54.6
20.2
0.0
121
2100
1496
0099
.90
10.
983
0.02
0.11
320.
002
0.66
10.
0627
0.00
0869
728
694.
88.
469
1.3
8.9
99.5
2824
0000
019
0.9
124.
60.
71
1818
0020
250
99.5
51
0.71
60.
020.
088
0.00
10.
116
0.05
90.
002
554
7154
914
543.
86.
499
.125
5800
000
145.
677
.40.
5-1
320
154
-219
599
.82
11.
676
0.06
0.16
930.
002
0.18
50.
072
0.00
2299
158
1002
2010
0813
100.
624
8200
000
255.
612
2.9
0.5
-15
1812
0-4
373
99.8
21
2.65
20.
050.
2251
0.00
20.
224
0.08
50.
0016
1311
3513
1414
1309
1299
.627
2600
000
275.
910
3.1
0.4
-10
1313
0-8
130
99.8
31
3.06
10.
030.
2463
0.00
20.
262
0.08
980.
001
1422
2114
23.1
8.2
1419
1199
.728
1500
000
303.
727
3.0
0.9
1113
118
2285
99.6
61
0.52
60.
010.
0683
7E-0
40.
081
0.05
580.
0013
429
5242
8.8
7.9
426
4.2
99.3
2755
0000
092
.342
.00.
518
2011
156
399
.75
20.
720.
020.
0904
0.00
20.
764
0.05
790.
0006
525
2355
08.
755
7.9
1010
1.4
2447
0000
012
2.0
99.0
0.8
1122
200
834
99.7
71
0.50
80.
030.
0659
0.00
10.
179
0.05
540.
0036
390
140
415
2241
1.5
8.8
99.2
2506
0000
021
4.4
166.
90.
8-1
416
114
-182
399
.64
10.
888
0.02
0.10
510.
001
0.00
30.
0611
0.00
1864
864
646
1364
46.
999
.7
BL15
-01-
001
BL15
-01-
002
BL15
-01-
003
BL15
-01-
004
BL15
-01-
005
BL15
-01-
006
BL15
-01-
007
BL15
-01-
008
BL15
-01-
009
BL15
-01-
010
BL15
-01-
011
BL15
-01-
012
BL15
-01-
013
BL15
-01-
014
BL15
-01-
015
BL15
-01-
016
BL15
-01-
017
BL15
-01-
018
BL15
-01-
019
2722
0000
030
6.8
90.5
0.3
-212
600
-304
8099
.79
11.
696
0.02
0.16
80.
001
0.22
10.
0728
0.00
110
0628
1007
.28.
510
01.2
7.6
99.4
%
con
±2σ
207 Pb
/ 23
5 U±2
σ20
6 Pb/
238 U
±2σ
±2σ
ρ20
7 Pb/
206 Pb
%Pb
3C
420
7 Pb/
235 U
±2σ
206 Pb
/23
8 UTh
/U20
4 Pb
(cps
)±2
σ%
er
ror
206 Pb
/ 20
4 Pb2
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
±2σ
207 Pb
/20
6 Pb
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 316
Tabl
e A
3. C
ontin
ued. 2698
0000
011
0.1
29.6
0.3
513
260
5160
97.2
11
3.59
00.
410
0.21
80.
019
0.98
40.
1106
0.00
5117
6890
1420
110
1250
100
88.0
2870
0000
061
0.7
428.
00.
74
1640
014
010
99.8
41
0.59
40.
010.
0764
6E-0
40.
364
0.05
650.
001
468
3847
37.
147
4.3
3.6
100.
325
6600
000
37.3
16.2
0.4
-315
500
-245
399
.54
11.
701
0.09
0.16
880.
003
0.39
40.
0729
0.00
3510
0990
1009
3210
0517
99.6
2601
0000
052
2.0
289.
40.
611
1513
635
4399
.74
10.
490.
010.
0646
6E-0
40.
176
0.05
510.
0011
405
4740
4.6
6.8
403.
33.
899
.727
7500
000
183.
910
1.3
0.6
611
183
3205
99.5
11
0.71
70.
020.
0885
0.00
10.
129
0.05
880.
0017
567
6455
012
547.
36.
499
.526
5600
000
376.
515
5.9
0.4
1121
191
2682
99.6
71
0.50
70.
010.
0666
8E-0
40.
026
0.05
550.
0015
418
6141
7.4
7.9
415.
44.
899
.528
2800
000
300.
056
.50.
211
1210
933
8299
.54
10.
899
0.02
0.10
270.
001
0.43
0.06
340.
0013
725
4565
010
630.
36.
697
.027
4400
000
282.
683
.70.
31
1313
0013
8140
95.3
01
10.
320.
110
0.41
50.
004
0.80
10.
1812
0.00
1226
6411
2466
1022
3619
90.7
2744
0000
055
3.4
96.4
0.2
-13
1292
-339
799
.81
10.
504
0.01
0.06
675E
-04
0.16
20.
0549
0.00
0940
636
414
5.4
416
3.1
100.
527
1800
000
603.
514
0.2
0.2
919
211
5149
99.6
41
0.48
80.
010.
0637
7E-0
40.
182
0.05
60.
0014
450
5540
3.4
8.6
397.
84.
498
.627
3600
000
231.
036
.00.
25
1428
018
100
98.4
61
5.88
20.
070.
3332
0.00
30.
605
0.12
790.
0011
2068
1519
58.7
9.8
1854
1594
.727
5800
000
109.
911
8.6
1.1
223
1150
2184
099
.79
15.
196
0.09
0.33
20.
003
0.10
30.
1136
0.00
218
6632
1851
1418
5015
99.9
2656
0000
068
.123
.70.
3-3
1550
0-6
427
99.4
51
2.99
20.
060.
2423
0.00
40.
181
0.09
030.
0021
1419
4514
0316
1398
1899
.627
3800
000
331.
385
.40.
3-4
1230
0-2
4200
99.5
61
3.19
90.
040.
2476
0.00
20.
636
0.09
370.
0009
1502
1814
55.9
9.6
1425
.812
97.9
2730
0000
010
17.1
555.
30.
5-1
411
79-5
693
99.8
01
0.51
0.01
0.06
675E
-04
0.26
50.
0556
0.00
0744
029
418.
44.
541
5.9
2.8
99.4
2843
0000
022
2.3
88.7
0.4
-215
750
-877
599
.59
10.
504
0.01
0.06
548E
-04
0.13
30.
0559
0.00
1743
666
413.
69.
340
8.4
4.7
98.7
2844
0000
013
1.6
108.
60.
810
1313
013
4499
.62
10.
665
0.02
0.08
350.
001
0.09
20.
0578
0.00
1752
066
518
1251
6.9
6.3
99.8
2709
0000
017
5.8
83.9
0.5
212
600
7295
99.8
21
0.54
0.02
0.06
988E
-04
0.02
20.
0557
0.00
1742
667
437
1043
4.6
599
.527
0700
000
60.0
52.1
0.9
420
500
5103
99.5
81
3.99
0.13
0.28
810.
005
0.30
30.
1006
0.00
2816
4456
1634
2616
3223
99.9
2717
0000
017
4.6
142.
00.
8-5
1326
0-2
786
99.7
51
0.51
50.
020.
0673
7E-0
40.
152
0.05
570.
0018
422
6942
211
419.
84.
399
.523
6500
000
116.
892
.70.
812
1815
010
6399
.56
10.
859
0.04
0.10
170.
001
0.25
50.
0608
0.00
2663
092
627
1962
4.2
899
.626
2400
000
353.
422
4.5
0.6
813
163
3316
99.7
11
0.49
80.
020.
0651
7E-0
40.
071
0.05
560.
002
418
7540
911
406.
44.
399
.430
9500
000
305.
644
.00.
1-6
2338
3-4
287
99.6
81
0.50
60.
020.
0657
9E-0
40.
324
0.05
550.
002
413
7941
512
410.
25.
398
.830
0200
000
606.
028
.20.
0-2
1575
0-3
9600
99.7
11
0.92
20.
030.
1078
0.00
30.
782
0.06
280.
0013
721
4766
217
660
1599
.727
4600
000
302.
213
2.9
0.4
512
240
4742
99.7
31
0.50
70.
010.
0666
6E-0
40.
064
0.05
520.
0012
414
5041
77.
541
5.7
3.6
99.7
2798
0000
023
4.6
81.5
0.3
-711
157
-461
199
.76
10.
996
0.02
0.11
420.
001
0.23
40.
0633
0.00
1271
839
702
1069
7.2
5.9
99.3
2742
0000
033
7.9
197.
40.
6-4
1025
0-6
645
99.7
31
0.50
80.
010.
0669
6E-0
40.
146
0.05
490.
0012
396
4941
6.4
7.7
417.
53.
610
0.3
2795
0000
010
5.0
57.7
0.5
615
250
2002
99.4
81
0.8
0.03
0.09
660.
001
0.09
80.
0603
0.00
2756
898
598
1859
4.2
799
.427
5900
000
473.
911
5.7
0.2
1115
136
1290
099
.86
13.
210.
040.
2539
0.00
20.
714
0.09
140.
0007
1456
1414
58.5
8.7
1458
.311
100.
026
5100
000
590.
569
4.0
1.2
-18
1267
-251
199
.79
10.
501
0.01
0.06
636E
-04
0.15
60.
0546
0.00
0939
338
412
5.7
413.
83.
710
0.4
2960
0000
052
.171
.01.
4-3
1446
7-1
820
99.6
71
0.71
0.05
0.08
830.
002
0.01
70.
0583
0.00
4151
015
055
028
545
1399
.124
4300
000
125.
563
.50.
5-1
2727
00-1
1740
99.7
41
0.64
60.
040.
0821
0.00
20.
042
0.05
670.
004
480
160
516
2650
911
98.6
2752
0000
018
5.7
29.8
0.2
513
260
3958
99.6
71
0.72
70.
020.
0892
9E-0
40.
139
0.05
890.
0014
576
5155
5.1
9.9
550.
95.
199
.226
9100
000
264.
516
3.6
0.6
1213
108
1718
99.6
41
0.50
80.
010.
067
7E-0
40.
131
0.05
470.
0015
391
6241
6.4
9.2
417.
84.
110
0.3
2801
0000
099
3.0
116.
40.
14
1332
519
850
99.8
41
0.51
50.
010.
0672
6E-0
40.
386
0.05
520.
0007
417
2742
1.4
4.5
419.
43.
499
.525
6300
000
121.
897
.90.
820
1680
454
99.6
72
0.50
30.
010.
0678
0.00
10.
856
0.05
430.
0006
380
2841
39.
342
2.9
8.1
102.
426
5400
000
803.
842
2.9
0.5
-213
650
-326
7599
.80
10.
540.
010.
0698
5E-0
40.
027
0.05
560.
0009
439
3743
8.4
5.5
435
3.2
99.2
2586
0000
049
5.0
62.8
0.1
-817
213
-449
399
.68
10.
482
0.01
0.06
337E
-04
0.21
20.
0548
0.00
1442
056
400
839
5.6
4.1
98.9
BL15
-01-
020
BL15
-01-
021
BL15
-01-
022
BL15
-01-
023
BL15
-01-
024
BL15
-01-
025
BL15
-01-
026
BL15
-01-
027
BL15
-01-
029
BL15
-01-
030
BL15
-01-
031
BL15
-01-
032
BL15
-01-
033
BL15
-01-
034
BL15
-01-
035
BL15
-01-
036
BL15
-01-
037
BL15
-01-
038
BL15
-01-
039
BL15
-01-
040
BL15
-01-
041
BL15
-01-
042
BL15
-01-
043
BL15
-01-
044
BL15
-01-
045
BL15
-01-
046
BL15
-01-
047
BL15
-01-
048
BL15
-01-
049
BL15
-01-
050
BL15
-01-
051
BL15
-01-
052
BL15
-01-
053
BL15
-01-
054
BL15
-01-
055
BL15
-01-
056
BL15
-01-
057
BL15
-01-
058
BL15
-01-
059
2794
0000
014
0.0
125.
00.
93
1343
332
7099
.71
10.
441
0.02
0.05
99E
-04
0.01
10.
0543
0.00
2337
089
370
1236
9.2
5.5
99.8
±2σ
206 Pb
/ 23
8 U±2
σ%
co
n
207 Pb
/ 20
6 Pb±2
σ20
7 Pb/
206 Pb
±2σ
207 Pb
/ 23
5 U
207 Pb
/23
5 U±2
σ20
6 Pb/
238 U
±2σ
ρ
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)Th
/U20
4 Pb
(cps
)±2
σ%
er
ror
206 Pb
/ 20
4 Pb2
%Pb
3C
4
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 317
Tabl
e A
3. C
ontin
ued. 28
1600
000
409.
326
1.9
0.6
1314
108
2411
99.4
41
0.50
80.
010.
0628
6E-0
40.
012
0.05
770.
0013
526
5141
7.5
7.5
392.
43.
694
.025
8800
000
565.
049
8.0
0.9
1417
121
2886
99.7
61
0.47
30.
010.
0626
6E-0
40.
265
0.05
470.
0009
394
3939
2.8
5.8
391.
13.
699
.628
1000
000
51.1
22.8
0.4
-11
1412
7-9
3099
.41
11.
711
0.06
0.16
970.
002
0.08
40.
0731
0.00
2710
1274
1010
2310
1013
100.
029
6200
000
267.
383
.50.
3-1
1616
00-2
1440
99.5
71
0.51
80.
020.
067
8E-0
40.
139
0.05
660.
002
452
7842
313
418.
24.
998
.929
0400
000
134.
480
.50.
612
1411
713
2199
.50
10.
807
0.03
0.09
740.
001
0.15
80.
0603
0.00
260
576
599
1659
97.
610
0.0
2804
0000
013
51.8
333.
50.
217
1376
5541
99.6
42
0.44
10
0.05
954E
-04
0.73
90.
0538
0.00
0236
2.9
6.5
370.
72.
337
2.6
2.7
100.
527
4600
000
75.6
30.7
0.4
114
1400
1539
099
.58
11.
759
0.04
0.17
270.
002
0.19
30.
0732
0.00
1910
1250
1031
1710
2812
99.7
2965
0000
094
4.0
784.
00.
86
1525
012
750
99.8
61
0.50
90.
010.
0666
6E-0
40.
308
0.05
520.
0009
414
3841
7.3
5.8
415.
53.
599
.627
1100
000
162.
131
.50.
21
1111
0012
430
99.6
21
0.50
20.
020.
0659
7E-0
40.
044
0.05
450.
0017
380
7141
210
411.
24.
399
.827
7500
000
243.
618
2.7
0.8
1114
127
1919
99.7
11
0.56
80.
010.
0737
8E-0
40.
306
0.05
570.
0012
428
5045
6.2
8.3
458.
84.
810
0.6
2951
0000
079
.855
.30.
78
1417
531
4499
.20
13.
541
0.07
0.25
950.
004
0.27
60.
0995
0.00
216
1335
1539
1614
8718
96.6
2872
0000
072
5.6
152.
30.
212
1915
846
7399
.69
10.
507
0.01
0.06
616E
-04
0.08
30.
0562
0.00
1245
349
416.
37.
441
2.5
3.7
99.1
2736
0000
021
8.3
248.
71.
15
1122
034
2099
.74
10.
513
0.02
0.06
717E
-04
0.00
40.
0556
0.00
1841
972
419
1041
8.9
4.1
100.
027
5400
000
111.
598
.80.
9-7
1115
7-3
220
99.6
31
1.76
60.
050.
1732
0.00
20.
112
0.07
350.
002
1026
5410
3416
1029
.59.
999
.625
0400
000
195.
220
9.8
1.1
112
1200
1977
099
.55
10.
729
0.02
0.08
950.
001
0.10
40.
0587
0.00
254
278
557
1455
2.3
6.5
99.2
2644
0000
011
3.0
44.7
0.4
2119
9057
899
.96
20.
727
0.05
0.09
30.
005
0.90
60.
0573
0.00
1749
967
553
2657
327
103.
627
7000
000
321.
322
7.7
0.7
-714
200
-340
399
.76
10.
467
0.01
0.06
238E
-04
0.24
70.
0544
0.00
1537
560
389
8.8
389.
84.
510
0.2
3088
0000
027
2.5
80.9
0.3
-419
475
-557
599
.77
10.
514
0.02
0.06
70.
001
0.07
0.05
60.
0027
430
110
420
1641
86.
199
.525
4600
000
921.
014
7.7
0.2
2321
9129
3099
.83
20.
466
0.01
0.06
327E
-04
0.74
0.05
350.
0006
348
2538
8.2
4.6
395.
34
101.
827
7400
000
111.
967
.00.
64
1435
029
9099
.47
10.
737
0.02
0.08
990.
001
0.19
90.
0598
0.00
258
174
559
1455
4.8
8.2
99.2
2596
0000
045
.334
.10.
810
1515
057
399
.45
10.
945
0.04
0.11
140.
002
0.19
60.
0629
0.00
372
010
068
123
681
1210
0.0
2735
0000
096
1.0
111.
90.
1-6
1321
7-1
2317
99.7
81
0.50
20.
010.
0659
5E-0
40.
134
0.05
560.
0007
435
3041
2.7
3.7
411.
22.
999
.627
1700
000
151.
317
8.0
1.2
-219
950
-871
099
.50
10.
829
0.03
0.09
970.
002
0.08
90.
0607
0.00
2763
189
611
1961
2.5
9.6
100.
226
9200
000
403.
026
5.0
0.7
1113
118
5436
98.8
51
1.45
30.
050.
1384
0.00
30.
912
0.07
640.
0013
1105
3491
022
835
1991
.828
2300
000
58.0
55.1
1.0
115
1500
6110
99.5
81
0.73
40.
050.
0899
0.00
30.
106
0.05
960.
0043
560
150
555
2855
515
100.
028
0700
000
198.
746
.00.
23
1343
349
9099
.69
10.
476
0.01
0.06
317E
-04
0.18
60.
0552
0.00
1739
467
395
1039
4.6
4.4
99.9
2612
0000
034
8.0
66.6
0.2
1815
8338
1899
.46
21.
681
0.02
0.16
840.
002
0.94
30.
0726
0.00
0410
039.
710
00.7
8.4
1003
.49.
210
0.3
2820
0000
010
4.5
23.2
0.2
914
156
5240
99.8
01
6.69
10.
090.
3799
0.00
40.
424
0.12
80.
0017
2076
2320
7211
2075
1810
0.1
2720
0000
081
.346
.00.
65
1428
048
3698
.55
13.
763
0.08
0.26
080.
004
0.73
0.10
60.
0014
1727
2415
8916
1493
2094
.028
6400
000
138.
394
.20.
7-4
1537
5-2
720
99.6
81
0.51
80.
020.
067
0.00
10.
098
0.05
550.
0025
440
9342
215
417.
86
99.0
2802
0000
095
.930
.30.
34
1537
525
9899
.44
10.
769
0.03
0.09
330.
001
0.29
20.
0601
0.00
2360
786
577
1757
4.9
7.6
99.6
2847
0000
027
7.8
243.
00.
9-3
1446
7-1
0770
99.7
61
0.82
70.
020.
0991
0.00
10.
145
0.06
080.
0015
621
5261
110
609.
36.
999
.726
8300
000
176.
821
.30.
18
1417
516
1599
.77
10.
491
0.02
0.06
468E
-04
0.00
40.
0551
0.00
1939
570
406
1140
3.5
4.8
99.4
2939
0000
037
6.0
223.
00.
6-1
112
109
-271
399
.56
10.
513
0.02
0.06
717E
-04
0.16
20.
0561
0.00
1845
370
420
1041
8.7
4.1
99.7
2422
0000
091
.755
.80.
61
2121
0098
6099
.46
10.
819
0.05
0.09
790.
002
0.14
90.
0609
0.00
3360
012
060
526
602
1199
.527
5400
000
201.
472
.50.
4-1
312
92-1
631
99.6
51
0.74
70.
020.
091
8E-0
40.
038
0.05
950.
0016
587
5956
611
561.
64.
899
.227
8900
000
291.
252
.40.
24
1127
553
0899
.57
10.
487
0.01
0.06
336E
-04
0.2
0.05
640.
0014
461
5340
2.4
7.9
395.
83.
998
.429
4900
000
97.1
54.5
0.6
821
263
1136
99.5
51
0.61
50.
030.
079
0.00
10.
104
0.05
690.
0028
480
110
488
1749
0.2
8.2
100.
5
BL15
-01-
060
BL15
-01-
061
BL15
-01-
062
BL15
-01-
063
BL15
-01-
064
BL15
-01-
065
BL15
-01-
066
BL15
-01-
067
BL15
-01-
068
BL15
-01-
069
BL15
-01-
070
BL15
-01-
071
BL15
-01-
072
BL15
-01-
073
BL15
-01-
074
BL15
-01-
075
BL15
-01-
076
BL15
-01-
077
BL15
-01-
078
BL15
-01-
079
BL15
-01-
080
BL15
-01-
081
BL15
-01-
082
BL15
-01-
083
BL15
-01-
084
BL15
-01-
085
BL15
-01-
086
BL15
-01-
087
BL15
-01-
088
BL15
-01-
089
BL15
-01-
090
BL15
-01-
091
BL15
-01-
092
BL15
-01-
093
BL15
-01-
094
BL15
-01-
095
BL15
-01-
096
BL15
-01-
097
BL15
-01-
098
2966
0000
020
6.1
136.
30.
7-2
1890
0-1
1025
99.6
01
0.71
90.
030.
0902
0.00
10.
013
0.05
890.
0023
541
8755
216
556.
77.
710
0.9
%
con
±2σ
207 Pb
/ 23
5 U±2
σ20
6 Pb/
238 U
±2σ
±2σ
ρ20
7 Pb/
206 Pb
±2σ
207 Pb
/20
6 Pb%
Pb3
C4
207 Pb
/23
5 U±2
σ20
6 Pb/
238 U
Th/U
204 Pb
(c
ps)
±2σ
%
erro
r
206 Pb
/ 20
4 Pb2
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 318
Tabl
e A
3. C
ontin
ued. 27
8300
000
210.
510
1.9
0.5
914
156
1773
99.6
71
0.5
0.01
0.06
548E
-04
0.35
60.
056
0.00
1543
763
412
1040
8.5
4.6
99.2
2796
0000
029
6.0
184.
70.
6-2
1260
0-1
1115
99.8
01
0.48
90.
010.
0647
7E-0
40.
081
0.05
560.
0015
424
6040
3.5
940
4.5
3.9
100.
226
5700
000
222.
110
0.8
0.5
-514
280
-133
0099
.72
13.
310.
040.
2585
0.00
20.
198
0.09
350.
0013
1501
2514
849.
914
8212
99.9
2747
0000
013
2.6
67.9
0.5
-212
600
-490
099
.71
10.
490.
020.
0639
8E-0
40.
013
0.05
610.
002
425
7740
311
399.
54.
699
.129
3700
000
493.
028
0.0
0.6
119
1900
5650
099
.78
10.
80.
010.
0964
0.00
10.
234
0.06
050.
0011
620
3959
6.5
7.4
593
699
.427
3300
000
120.
715
1.9
1.3
-511
220
-262
099
.38
10.
767
0.03
0.09
270.
001
0.03
80.
0604
0.00
2360
481
576
1557
1.6
7.4
99.2
2786
0000
038
8.8
167.
50.
43
1343
310
080
99.5
91
0.51
50.
010.
0668
7E-0
40.
073
0.05
640.
0013
467
5342
1.9
6.9
416.
53.
998
.727
2500
000
300.
511
6.4
0.4
413
325
5673
99.6
51
0.49
20.
010.
065
6E-0
40.
138
0.05
530.
0014
411
5440
6.7
7.3
405.
93.
799
.829
2100
000
243.
839
.20.
2-3
1136
7-6
263
99.5
41
0.50
90.
010.
0655
8E-0
42E
-04
0.05
70.
0018
487
6841
6.7
9.2
408.
94.
998
.128
1500
000
244.
193
.10.
48
1012
523
3199
.78
10.
493
0.01
0.06
476E
-04
0.09
0.05
530.
0015
426
6340
8.3
9.4
403.
93.
998
.926
9800
000
408.
021
.30.
1-8
1316
3-3
800
99.7
61
0.49
50.
010.
0655
5E-0
40.
081
0.05
460.
001
405
4740
7.4
6.9
408.
83.
310
0.3
2784
0000
021
9.6
53.4
0.2
1112
109
2267
99.4
51
0.83
10.
040.
0957
0.00
30.
795
0.06
270.
0016
695
5360
920
589
1896
.727
8200
000
182.
511
.30.
1-4
1127
5-1
9275
99.4
51
6.30
40.
060.
3602
0.00
30.
462
0.12
720.
001
2058
1420
19.9
7.6
1983
1498
.227
4900
000
174.
785
.10.
5-3
1343
3-6
423
99.6
41
0.79
30.
020.
0966
0.00
20.
382
0.05
950.
0016
590
6059
113
594.
49.
210
0.6
2689
0000
014
8.0
20.2
0.1
1213
108
2427
99.3
81
1.86
80.
030.
1739
0.00
20.
222
0.07
780.
0014
1136
3610
6812
1033
.39.
196
.827
2000
000
173.
010
5.4
0.6
714
200
2519
99.6
21
0.72
40.
020.
0892
0.00
10.
132
0.05
890.
0014
562
4955
3.1
9.4
550.
76
99.6
2734
0000
022
6.4
108.
30.
52
1470
037
300
99.8
71
3.97
50.
050.
2882
0.00
20.
339
0.10
010.
0011
1623
2016
29.1
916
32.5
1110
0.2
2675
0000
028
5.0
260.
00.
9-2
1365
0-1
0860
99.6
91
0.51
0.01
0.06
697E
-04
0.18
40.
0553
0.00
1341
854
418.
78.
841
7.1
4.3
99.6
BL15
-01-
099
BL15
-01-
100
BL15
-01-
101
BL15
-01-
102
BL15
-01-
103
BL15
-01-
104
BL15
-01-
105
BL15
-01-
106
BL15
-01-
107
BL15
-01-
108
BL15
-01-
109
BL15
-01-
110
BL15
-01-
111
BL15
-01-
112
BL15
-01-
113
BL15
-01-
114
BL15
-01-
115
BL15
-01-
116
BL15
-01-
117
2824
0000
031
.226
.30.
83
1240
021
3399
.01
11.
975
0.09
0.17
940.
003
0.21
60.
0795
0.00
3711
5095
1107
3310
6619
96.3
1 afte
r Hg
corr
ectio
n2 in
coun
ts p
er se
cond
3 radi
ogen
ic
4 Cor
rect
ion
fact
or: 1
= t
hres
hold
204 Pb
cps f
or n
o co
rrec
tion
(80
cps)
; 2 =
thr
esho
ld %
for 20
4 Pb-b
ased
corr
ectio
n (2
1 %
erro
r); 3
= th
resh
old
% fo
r 208 Pb
-bas
edco
rrec
tion
(98.
5 %
radi
ogen
ic P
b)
±2σ
206 Pb
/ 23
8 U±2
σ%
co
n
207 Pb
/ 20
6 Pb±2
σ20
7 Pb/
206 Pb
±2σ
207 Pb
/ 23
5 U
207 Pb
/23
5 U±2
σ20
6 Pb/
238 U
±2σ
ρ
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
206 Pb
/ 20
4 Pb2
%Pb
3C
4Sa
mpl
e90
Zr (c
ps)
U
(ppm
)Th
(p
pm)
Th/U
204 Pb
(c
ps)
±2σ
%
erro
r
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 319
Tabl
e A
4. U
–Pb
geoc
hron
olog
ic d
ata
for z
ircon
refe
renc
e mat
eria
ls an
alyz
ed a
t the
Uni
vers
ity o
f New
Bru
nsw
ick.
2763
0000
019
1.4
85.9
80.
452
1260
0.0
2125
599
.70
11.
960
0.02
90.
186
0.00
20.
043
0.07
610.
0013
1092
3311
0210
1100
999
.826
7900
000
249.
615
4.3
0.62
-413
325.
0-1
3650
99.7
21
1.95
40.
029
0.18
60.
002
0.06
90.
0763
0.00
1111
0130
1099
1010
978
99.8
2736
0000
027
015
2.4
0.56
-11
1311
8.2
-537
199
.78
11.
942
0.02
50.
185
0.00
10.
179
0.07
620.
0010
1100
2610
959
1095
810
0.0
2776
0000
040
022
7.6
0.57
613
216.
714
798
99.8
81
1.95
00.
021
0.18
60.
001
0.38
60.
0760
0.00
0710
9219
1099
711
027
100.
328
0100
000
193.
2489
.22
0.46
512
240.
084
7099
.72
11.
967
0.03
10.
185
0.00
20.
372
0.07
690.
0011
1114
2811
0411
1095
999
.227
6700
000
241.
314
4.07
0.60
1012
120.
053
0899
.79
11.
950
0.02
60.
186
0.00
10.
287
0.07
630.
0010
1101
2611
019
1097
899
.727
5400
000
197.
112
6.3
0.64
813
162.
553
9499
.79
11.
948
0.02
40.
186
0.00
20.
303
0.07
610.
0010
1096
2610
988
1097
910
0.0
2881
0000
020
4.86
102.
770.
50-5
1530
0.0
-903
899
.73
11.
950
0.02
80.
186
0.00
20.
050
0.07
590.
0012
1092
3110
9810
1098
910
0.0
2678
0000
012
2.1
42.2
70.
356
1118
3.3
4345
99.6
81
1.95
40.
036
0.18
70.
002
0.14
80.
0762
0.00
1511
0238
1100
1311
0310
100.
229
4500
000
205.
710
3.56
0.50
216
800.
022
880
99.7
31
1.95
70.
034
0.18
50.
002
0.16
40.
0771
0.00
1411
2833
1100
1210
979
99.7
2779
0000
031
3.8
189
0.60
612
200.
011
420
99.8
31
1.94
00.
024
0.18
60.
001
0.44
20.
0759
0.00
0810
8922
1095
811
018
100.
526
4700
000
285.
916
2.68
0.57
-514
280.
0-1
2270
99.8
21
1.96
00.
022
0.18
70.
002
0.24
20.
0759
0.00
0910
9325
1101
811
059
100.
327
3500
000
211.
513
5.02
0.64
714
200.
064
8999
.75
11.
957
0.03
10.
186
0.00
20.
170
0.07
620.
0012
1102
3011
0111
1098
899
.7
FC-1
- 1
FC-1
- 2
FC-1
- 5
FC-1
- 6
FC-1
- 8
FC-1
- 9
FC-1
- 10
FC-1
- 12
FC-1
- 13
FC-1
- 14
FC-1
- 15
FC-1
- 16
FC-1
- 17
FC-1
- 18
2837
0000
023
0.9
83.8
0.36
-814
175.
0-6
246
99.7
91
1.94
60.
025
0.18
50.
001
0.18
40.
0763
0.00
1010
9927
1098
810
948
99.7
Ples
ovic
e - 1
2557
0000
085
673
.90.
086
115
1500
.052
600.
0099
.71
10.
393
0.01
0.05
280.
0004
0.01
90.
0531
0.00
1133
247
336.
55.
933
1.4
2.6
98.5
Ples
ovic
e - 1
026
8200
000
901.
495
.26
0.10
613
1292
.342
34.6
299
.76
10.
398
0.01
0.05
360.
0004
0.08
20.
0536
0.00
0934
636
339.
64.
533
6.7
2.5
99.1
Ples
ovic
e - 2
2628
0000
062
7.3
650.
104
514
280.
077
52.0
099
.72
10.
394
0.01
0.05
30.
0005
0.03
40.
0537
0.00
135
243
336.
95.
133
32.
898
.8Pl
esov
ice -
325
8600
000
805
68.2
0.08
58
1215
0.0
6050
.00
99.8
11
0.38
90.
010.
0538
0.00
050.
035
0.05
260.
001
303
4533
35.
333
7.6
310
1Pl
esov
ice -
427
4300
000
605.
756
.71
0.09
42
1470
0.0
1882
5.00
99.7
21
0.39
10.
010.
0529
0.00
040.
034
0.05
350.
0011
353
4433
4.7
5.3
332
2.7
99.2
Ples
ovic
e - 5
2732
0000
089
610
0.57
0.11
2-5
1224
0.0
-111
54.0
099
.78
10.
393
0.01
0.05
320.
0004
0.24
40.
0534
0.00
0834
034
336.
64.
433
4.3
2.4
99.3
Ples
ovic
e - 6
2639
0000
058
5.2
51.4
20.
088
-614
233.
3-5
990.
0099
.80
10.
389
0.01
0.05
330.
0005
0.20
10.
0527
0.00
1130
546
333.
36
334.
92.
810
0Pl
esov
ice -
727
1700
000
689.
864
.09
0.09
38
1215
0.0
5282
.50
99.8
01
0.39
0.01
0.05
310.
0004
0.14
20.
0533
0.00
0834
034
334.
34.
433
3.7
2.5
99.8
Ples
ovic
e - 8
2721
0000
021
95.3
268.
50.
122
112
1200
.013
6000
.00
99.8
41
0.39
70
0.05
350.
0004
0.18
40.
0538
0.00
0636
823
339.
43
336.
22.
399
.1Pl
esov
ice -
927
3000
000
470.
238
.11
0.08
1-1
211
91.7
-239
2.50
99.7
21
0.39
30.
010.
053
0.00
050.
066
0.05
370.
0012
353
5033
6.3
5.7
333.
13
99
1148
0000
014
484
.24
1.71
711
157.
128
7399
.55
11.
945
0.05
40.
1854
0.00
330.
200
0.07
510.
0022
1062
5710
9419
1096
1894
.712
1500
000
134.
286
.64
1.55
1012
120.
020
0099
.66
11.
921
0.05
60.
1867
0.00
320.
272
0.07
410.
0022
1028
5910
8519
1103
1790
.412
2200
000
238.
610
7.4
2.22
-511
-220
.0-7
160
99.6
01
1.97
80.
048
0.18
590.
0029
0.25
70.
0770
0.00
1911
1150
1106
1710
9916
99.6
1275
0000
017
365
.12.
665
1224
0.0
5186
99.5
71
1.96
10.
057
0.18
500.
0035
0.21
80.
0772
0.00
2411
1361
1100
2010
9419
98.4
1185
0000
036
224
3.5
1.49
711
157.
176
5799
.76
11.
929
0.04
40.
1850
0.00
280.
310
0.07
560.
0017
1078
4710
9015
1094
1598
.011
8400
000
204.
195
.32.
148
1113
7.5
3863
99.7
41
1.98
20.
052
0.18
850.
0030
0.39
60.
0761
0.00
1910
8652
1107
1811
1316
96.5
1171
0000
034
8.9
195.
11.
79-3
10-3
33.3
-170
9099
.70
11.
963
0.04
60.
1855
0.00
280.
406
0.07
670.
0017
1107
4611
0216
1097
1599
.411
4100
000
325.
319
81.
6415
1173
.331
0699
.72
11.
975
0.04
30.
1860
0.00
270.
367
0.07
760.
0017
1131
4311
0814
1100
1596
.511
2800
000
318.
719
6.5
1.62
-20
11-5
5.0
-223
399
.83
11.
919
0.04
70.
1854
0.00
290.
518
0.07
530.
0017
1069
4710
8616
1096
1697
.111
3600
000
283.
817
8.1
1.59
-511
-220
.0-8
070
99.7
41
1.93
90.
044
0.18
560.
0027
0.28
50.
0759
0.00
1810
8546
1094
1510
9715
98.5
1133
0000
030
0.7
195.
31.
542
1047
1.4
2042
499
.83
11.
941
0.04
50.
1864
0.00
280.
378
0.07
530.
0017
1068
4710
9416
1102
1595
.811
1800
000
248.
113
6.5
1.82
1010
98.0
3466
99.6
71
1.95
70.
044
0.18
610.
0028
0.19
90.
0763
0.00
1810
9548
1100
1511
0015
99.1
1146
0000
027
6.2
181.
91.
5213
1076
.930
6899
.70
11.
963
0.05
10.
1860
0.00
300.
473
0.07
650.
0019
1100
4911
0117
1100
1699
.6
FC-1
- 1
FC-1
- 2
FC-1
- 3
FC-1
- 4
FC-1
- 5
FC-1
- 6
FC-1
- 7
FC-1
- 8
FC-1
- 9
FC-1
- 10
FC-1
- 11
FC-1
- 12
FC-1
- 13
FC-1
- 14
1122
0000
032
0.1
212.
21.
5120
1050
.022
5099
.66
11.
956
0.04
60.
1855
0.00
280.
182
0.07
700.
0019
1113
4910
9916
1097
1598
.2
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)C
420
7 Pb/
235 U
±2σ
204 Pb
(c
ps)
±2σ
% er
ror
206 Pb
/ 20
4 Pb2
%Pb
3%
co
n
Cal
cula
ted
ages
(Ma)
Isot
opic
ratio
sM
easu
red
conc
entr
atio
ns
207 Pb
/20
6 Pb±2
σ20
7 Pb/
235 U
±2σ
±2σ
206 Pb
/ 23
8 U
206 Pb
/ 23
8 U±2
σρ
207 Pb
/ 20
6 Pb±2
σTh
/U
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 320
Tabl
e A
4. C
ontin
ued.
1115
0000
021
1.4
109
1.94
-111
-110
0.0
-296
7099
.66
11.
948
0.04
70.
1865
0.00
290.
131
0.07
630.
0020
1091
5210
9616
1102
1699
.010
9500
000
207.
212
8.9
1.61
-412
-300
.0-7
075
99.5
91
1.95
30.
051
0.18
490.
0028
0.26
50.
0769
0.00
2011
0653
1097
1810
9415
99.0
1098
0000
028
5.3
178.
41.
607
1014
2.9
5654
99.7
61
1.95
90.
042
0.18
680.
0029
0.16
50.
0758
0.00
1710
8247
1100
1511
0416
97.0
1109
0000
032
419
0.3
1.70
1211
91.7
3760
99.8
01
1.94
90.
044
0.18
630.
0028
0.35
70.
0755
0.00
1710
7545
1097
1511
0115
96.5
FC-1
- 15
FC
-1 -
16FC
-1 -
17FC
-1 -
18FC
-1 -
1910
8400
000
733.
250
4.2
1.45
511
220.
019
760
99.8
31
1.95
00.
039
0.18
540.
0027
0.42
70.
0762
0.00
1510
9640
1098
1310
9615
99.6
Ples
ovic
e - 1
1123
0000
048
540
.611
.95
-411
-275
.0-4
955
99.9
41
0.40
20.
012
0.05
540.
0009
0.22
00.
0522
0.00
1627
968
344
934
85
101.
2Pl
esov
ice -
211
2200
000
407.
137
.07
10.9
82
1155
0.0
8125
99.7
81
0.40
00.
014
0.05
400.
0009
0.22
30.
0536
0.00
1933
275
341
1033
95
99.4
Ples
ovic
e - 3
1182
0000
039
3.8
31.3
112
.58
611
183.
326
9099
.85
10.
379
0.01
40.
0518
0.00
090.
128
0.05
330.
0020
321
8132
610
326
510
0.0
Ples
ovic
e - 4
1108
0000
090
9.7
99.9
9.11
-511
-220
.0-7
284
99.8
01
0.39
10.
010
0.05
350.
0008
0.08
50.
0532
0.00
1432
558
335
733
65
100.
2Pl
esov
ice -
510
7100
000
505.
844
.29
11.4
2-1
212
-100
.0-1
643
99.7
81
0.40
10.
013
0.05
410.
0008
0.17
70.
0540
0.00
1835
271
342
933
95
99.3
Ples
ovic
e - 6
1119
0000
037
6.3
30.0
112
.54
911
122.
216
5499
.90
10.
395
0.01
60.
0542
0.00
090.
161
0.05
300.
0021
306
8433
712
340
610
0.9
Ples
ovic
e - 7
1061
0000
084
2.9
88.8
9.49
1412
85.7
2343
99.7
41
0.40
30.
010
0.05
420.
0008
0.17
80.
0537
0.00
1434
660
343
834
15
99.2
Ples
ovic
e - 8
1041
0000
070
6.6
67.2
10.5
18
1215
0.0
3370
99.7
81
0.39
50.
012
0.05
410.
0009
0.29
50.
0535
0.00
1633
266
339
934
06
100.
2Pl
esov
ice -
910
7400
000
652.
659
.51
10.9
74
1127
5.0
6335
99.9
21
0.39
50.
012
0.05
440.
0009
0.14
80.
0528
0.00
1730
469
337
934
25
101.
4Pl
esov
ice -
10
1152
0000
086
9.6
131.
36.
6211
1614
5.5
3095
99.7
21
0.40
50.
018
0.05
380.
0010
0.05
40.
0546
0.00
2637
111
034
413
338
698
.2Pl
esov
ice -
11
1172
0000
064
7.7
59.9
10.8
16
1321
6.7
4253
99.9
51
0.39
30.
016
0.05
450.
0010
0.14
60.
0524
0.00
2129
088
336
1234
26
101.
8
1724
0000
022
9.7
136.
51.
683
7.8
9.3
119.
246
55.1
399
.69
11.
957
0.06
0.18
60.
007
0.28
30.
0761
0.00
1310
8934
1099
2110
99.8
3898
.217
3600
000
217.
810
0.7
2.16
36.
68.
312
5.8
5381
.82
99.7
21
1.93
30.
060.
1856
0.00
70.
272
0.07
60.
0015
1082
4110
9022
1097
.138
98.4
1647
0000
069
432
82.
116
0.6
9.4
1566
.718
9666
.67
99.8
11
1.96
50.
060.
1863
0.00
690.
474
0.07
640.
0008
1102
2111
02.9
1911
01.2
3899
.816
5700
000
469.
928
2.6
1.66
32.
98.
930
6.9
2606
8.97
99.8
61
1.93
50.
060.
1857
0.00
690.
486
0.07
590.
0009
1087
2410
92.4
2010
97.8
3799
.116
6000
000
270.
915
1.8
1.78
52.
59.
136
4.0
1742
0.00
99.7
61
1.95
80.
060.
1858
0.00
690.
375
0.07
660.
0011
1104
2811
0020
1098
.338
99.6
1647
0000
033
3.6
192.
91.
729
6.1
9.8
160.
788
14.7
599
.77
11.
952
0.06
0.18
630.
0069
0.18
90.
0754
0.00
1110
7131
1098
2011
01.3
3895
.716
2100
000
327.
914
4.2
2.27
4-1
.47.
2-5
14.3
-365
00.0
099
.74
11.
951
0.06
0.18
550.
0069
0.23
50.
0764
0.00
1111
0128
1099
.221
1096
.938
99.7
1605
0000
020
1.7
102.
151.
975
110
1000
.031
230.
0099
.70
11.
950.
060.
1861
0.00
70.
281
0.07
620.
0015
1088
4010
9622
1100
.138
98.4
1587
0000
034
621
4.6
1.61
24.
19.
122
2.0
1294
8.78
99.7
71
1.95
90.
060.
186
0.00
690.
442
0.07
640.
0011
1100
3011
0020
1099
.538
99.8
1574
0000
034
8.6
217
1.60
68.
38.
810
6.0
6383
.13
99.7
81
1.94
40.
060.
1856
0.00
690.
447
0.07
610.
0011
1092
2910
9521
1097
.338
99.3
1593
0000
014
7.7
110.
21.
345.
39.
517
9.2
4369
.81
99.7
11
1.96
50.
070.
1868
0.00
710.
306
0.07
590.
0015
1082
4011
0422
1104
3896
.715
5600
000
387
240
1.61
310
1010
0.0
5750
.00
99.7
41
1.94
60.
060.
1853
0.00
690.
239
0.07
620.
0011
1095
2910
96.1
2010
95.7
3899
.715
8400
000
326.
420
3.5
1.60
45.
78.
414
7.4
8954
.39
99.8
11
1.95
60.
060.
1863
0.00
690.
101
0.07
570.
0012
1087
2910
99.5
1911
01.4
3898
1557
0000
025
112
4.5
2.01
612
.39.
577
.231
26.8
399
.73
11.
949
0.06
0.18
560.
0069
0.16
60.
0762
0.00
1310
9433
1097
2010
97.6
3899
.415
8300
000
281.
315
5.1
1.81
45.
59.
116
5.5
8090
.91
99.7
01
1.95
20.
060.
1858
0.00
690.
202
0.07
60.
0012
1090
3110
9821
1098
.738
98.6
1559
0000
026
2.1
148.
31.
767
1111
100.
037
17.2
799
.78
11.
966
0.06
0.18
670.
007
0.27
40.
0758
0.00
1310
8634
1105
2011
03.1
3897
.315
2900
000
386.
521
0.7
1.83
46.
79.
113
5.8
8552
.24
99.7
61
1.93
50.
060.
1848
0.00
70.
442
0.07
690.
0011
1113
2910
9220
1092
.838
97.1
1577
0000
026
816
2.8
1.64
68
8.7
108.
852
62.5
099
.75
11.
959
0.06
0.18
640.
007
0.24
80.
0763
0.00
1110
9629
1100
.620
1101
.938
99.2
FC-1
- 1
FC-1
- 2
FC-1
- 4
FC-1
- 5
FC-1
- 6
FC-1
- 7
FC-1
- 8
FC-1
- 9
FC-1
- 10
FC-1
- 11
FC-1
- 12
FC-1
- 13
FC-1
- 14
FC-1
- 15
FC-1
- 16
FC-1
- 17
FC-1
- 18
FC-1
- 19
FC-1
- 20
1547
0000
017
5.4
85.6
2.04
95.
87.
813
4.5
4641
.38
99.6
91
1.94
90.
060.
1857
0.00
70.
276
0.07
560.
0014
1074
3710
9921
1097
.938
96.3
Ples
ovic
e - 1
1727
0000
073
0.8
68.2
10.7
218
.39.
853
.618
14.7
599
.84
10.
387
0.01
0.05
310.
002
0.01
10.
0528
0.00
1330
453
331.
79.
833
3.4
1210
1Pl
esov
ice -
117
7600
000
730.
368
.110
.72
1911
57.9
1789
.47
99.8
51
0.38
50.
010.
0531
0.00
20.
022
0.05
260.
0014
295
5833
0.5
1033
3.3
1210
1
%
con
±2σ
207 Pb
/20
6 Pb±2
σ20
7 Pb/
235 U
±2σ
±2σ
206 Pb
/ 23
8 U±2
σρ
207 Pb
/ 20
6 Pb
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)Th
/U20
4 Pb
(cps
)±2
σ%
erro
r20
6 Pb/
204 Pb
2%
Pb3
C4
207 Pb
/23
5 U
206 Pb
/ 23
8 U±2
σ
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 321
Tabl
e A
4. C
ontin
ued.
Ples
ovic
e - 2
1709
0000
060
4.5
54.1
11.1
77.
19
126.
839
21.1
399
.71
10.
403
0.02
0.05
390.
002
0.02
40.
0545
0.00
1537
359
343.
411
338.
212
98.5
Ples
ovic
e - 2
1803
0000
060
4.5
54.1
11.1
77
1115
7.1
4150
.00
99.8
11
0.39
80.
020.
054
0.00
20.
089
0.05
370.
0016
340
6533
9.6
1133
912
99.8
Ples
ovic
e - 3
1574
0000
061
7.9
54.1
611
.41
1512
80.0
1874
.67
99.9
21
0.38
30.
010.
0529
0.00
20.
356
0.05
250.
0012
297
5332
8.4
1033
2.3
1210
1Pl
esov
ice -
317
0500
000
619
54.4
111
.38
1311
84.6
2261
.54
99.9
01
0.38
20.
010.
0528
0.00
20.
182
0.05
260.
0011
300
4732
8.3
9.5
331.
712
101
Ples
ovic
e - 4
1675
0000
066
5.7
59.3
111
.22
3.2
9.1
284.
495
75.0
099
.78
10.
376
0.01
0.05
130.
0019
0.08
20.
0531
0.00
1331
752
323.
39.
632
2.3
1299
.7Pl
esov
ice -
416
7800
000
665.
759
.311
.23
3.3
927
2.7
9287
.88
99.7
61
0.37
50.
010.
0513
0.00
190.
10.
053
0.00
1331
452
323.
19.
632
2.4
1299
.8Pl
esov
ice -
516
4000
000
585
5111
.47
4.5
9.8
217.
860
44.4
499
.81
10.
392
0.01
0.05
320.
002
0.23
60.
0536
0.00
1434
256
335.
311
334.
212
99.7
Ples
ovic
e - 5
1641
0000
058
751
.311
.44
10.5
9.4
89.5
2571
.43
99.7
61
0.39
30.
010.
0529
0.00
20.
165
0.05
410.
0013
360
5133
6.1
1033
2.3
1298
.9Pl
esov
ice -
616
1400
000
559
48.7
11.4
88
1012
5.0
3161
.25
99.8
51
0.39
0.01
0.05
360.
002
0.33
80.
053
0.00
1331
454
333.
810
336.
412
101
Ples
ovic
e - 6
1614
0000
055
948
.711
.48
810
125.
031
61.2
599
.85
10.
390.
010.
0536
0.00
20.
338
0.05
30.
0013
314
5433
3.8
1033
6.4
1210
1Pl
esov
ice -
716
3400
000
613.
452
.96
11.5
86.
79
134.
341
53.7
399
.65
10.
397
0.01
0.05
250.
0019
0.04
60.
0544
0.00
1436
757
338.
810
329.
812
97.3
Ples
ovic
e - 7
1780
0000
061
3.6
52.9
311
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1111
100.
026
34.5
599
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10.
394
0.02
0.05
260.
002
0.08
0.05
40.
0016
350
6533
6.7
1133
0.2
1298
.1Pl
esov
ice -
816
1500
000
658.
459
.57
11.0
50.
19.
595
00.0
2936
00.0
099
.81
10.
391
0.01
0.05
330.
002
0.01
70.
0534
0.00
1432
756
334.
410
334.
512
100
Ples
ovic
e - 8
1615
0000
065
8.4
59.5
711
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0.1
9.5
9500
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3600
.00
99.8
11
0.39
10.
010.
0533
0.00
20.
017
0.05
340.
0014
327
5633
4.4
1033
4.5
1210
0Pl
esov
ice -
916
2500
000
791.
877
.53
10.2
11.
49.
265
7.1
2546
4.29
99.9
11
0.38
60.
010.
0534
0.00
20.
125
0.05
250.
0011
295
4633
0.7
9.4
335.
212
101
Ples
ovic
e - 9
1625
0000
079
1.8
77.5
310
.21
1.4
9.2
657.
125
464.
2999
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10.
386
0.01
0.05
340.
002
0.12
50.
0525
0.00
1129
546
330.
79.
433
5.2
1210
1Pl
esov
ice -
10
1607
0000
011
85.1
159.
27.
444
11.4
9.3
81.6
4631
.58
99.8
11
0.39
10.
010.
0533
0.00
20.
138
0.05
330.
0009
333
3833
4.5
8.8
334.
612
100
Ples
ovic
e - 1
016
0700
000
1185
.115
9.2
7.44
411
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381
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31.5
899
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10.
391
0.01
0.05
330.
002
0.13
80.
0533
0.00
0933
338
334.
58.
833
4.6
1210
0Pl
esov
ice -
11
1586
0000
061
8.1
53.9
911
.45
3.2
8.6
268.
884
59.3
899
.81
10.
391
0.01
0.05
310.
002
0.14
90.
0535
0.00
1333
354
334.
810
333.
812
99.7
Ples
ovic
e - 1
115
8600
000
618.
153
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11.4
53.
28.
626
8.8
8459
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99.8
11
0.39
10.
010.
0531
0.00
20.
149
0.05
350.
0013
333
5433
4.8
1033
3.8
1299
.7Pl
esov
ice -
12
1595
0000
074
7.9
71.3
710
.48
0.6
9.9
1650
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316.
6799
.73
10.
390.
010.
0523
0.00
190.
194
0.05
350.
0011
337
4733
3.6
9.5
328.
612
98.5
Ples
ovic
e - 1
217
3300
000
748.
671
.46
10.4
8-3
12-4
00.0
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50.0
099
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10.
389
0.02
0.05
240.
002
0.17
90.
0535
0.00
1433
459
333.
511
329.
512
98.8
Ples
ovic
e - 1
315
3800
000
473.
638
.91
12.1
715
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963
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28.2
199
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10.
392
0.02
0.05
40.
002
0.10
80.
0528
0.00
1530
162
335.
311
339.
212
101
Ples
ovic
e - 1
315
5500
000
473.
638
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12.1
715
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560
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12.6
699
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10.
392
0.02
0.05
40.
002
0.12
60.
0528
0.00
1530
361
335.
211
338.
912
101
Ples
ovic
e - 1
416
6500
000
412.
237
.35
11.0
47
1318
5.7
2681
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99.7
11
0.39
50.
020.
0527
0.00
20.
154
0.05
430.
0022
364
8733
713
331.
212
98.3
Ples
ovic
e - 1
415
7600
000
412.
237
.29
11.0
58.
79.
110
4.6
2086
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99.5
71
0.40
30.
020.
0527
0.00
20.
093
0.05
540.
0017
404
6634
2.9
1133
0.9
1296
.5Pl
esov
ice -
15
1561
0000
061
0.3
54.7
611
.14
17.1
8.4
49.1
1560
.23
99.8
21
0.38
80.
010.
053
0.00
20.
247
0.05
320.
0012
321
4933
2.3
9.8
333.
112
100
Ples
ovic
e - 1
515
6100
000
610.
354
.76
11.1
417
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449
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60.2
399
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10.
388
0.01
0.05
30.
002
0.24
70.
0532
0.00
1232
149
332.
39.
833
3.1
1210
055
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6.4
9.2
143.
842
01.5
699
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10.
395
0.02
0.05
290.
002
0.26
10.
054
0.00
1435
255
337.
611
332.
412
98.5
Ples
ovic
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6 15
5600
000
612.
7
Ples
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6 15
5600
000
612.
755
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01.5
699
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10.
395
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0.05
290.
002
0.26
10.
054
0.00
1435
255
337.
611
332.
412
98.5
Ples
ovic
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715
6500
000
972.
610
5.7
9.20
27.
28.
912
3.6
6025
.00
99.7
51
0.39
30.
010.
0532
0.00
20.
174
0.05
330.
001
329
4433
6.3
9.3
333.
912
99.3
Ples
ovic
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715
6500
000
972.
610
5.7
9.20
27.
28.
912
3.6
6025
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99.7
51
0.39
30.
010.
0532
0.00
20.
174
0.05
330.
001
329
4433
6.3
9.3
333.
912
99.3
Ples
ovic
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815
2800
000
518.
743
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11.9
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98.
210
3.8
2849
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99.8
51
0.39
50.
020.
0548
0.00
210.
221
0.05
310.
0014
317
5933
7.2
1134
4.1
1310
2Pl
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ice -
18
1632
0000
051
8.7
43.5
111
.92
910
111.
126
08.8
999
.81
10.
397
0.02
0.05
460.
0021
0.27
0.05
370.
0017
342
6933
8.6
1234
2.5
1310
1Pl
esov
ice -
19
1580
0000
041
2.1
33.2
512
.39
810
125.
022
81.2
5##
###
10.
379
0.02
0.05
380.
002
0.11
40.
0513
0.00
1624
266
325.
911
337.
512
104
Ples
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e - 1
915
3100
000
412.
133
.25
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99
9.1
101.
119
88.8
9##
###
10.
381
0.02
0.05
370.
002
0.09
40.
0515
0.00
1525
062
326.
811
337.
212
103
Ples
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e - 2
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3300
000
676
62.4
610
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0.1
7.7
7700
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8900
.00
99.9
01
0.38
0.01
0.05
240.
002
0.00
40.
0525
0.00
1229
252
326.
79.
632
9.1
1210
1Pl
esov
ice -
20
1558
0000
067
6.3
62.4
810
.82
0.9
8.3
922.
232
466.
6799
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10.
378
0.01
0.05
210.
0019
0.08
10.
0524
0.00
1429
157
325
1032
7.5
1210
1
%
con
±2σ
207 Pb
/ 23
5 U±2
σ20
6 Pb/
238 U
±2σ
±2σ
ρ20
7 Pb/
206 Pb
±2σ
207 Pb
/20
6 Pb%
Pb3
C4
207 Pb
/23
5 U±2
σ20
6 Pb/
238 U
Th/U
204 Pb
(c
ps)
±2σ
% er
ror
206 Pb
/ 20
4 Pb2
Sam
ple
90Zr
(cps
)U
(p
pm)
Th
(ppm
)Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
Copyright © Atlantic Geology, 2019Barr et al. – Detrital zircon signatures in Precambrian and Paleozoic sedimentary units in Ganderia and Avalonia of southern New Brunswick, Canada – more pieces of the puzzle
ATLANTIC GEOLOGY · VOLUME 55 · 2019 322
Tabl
e A
4. C
ontin
ued.
1784
0000
04.
483
2.00
32.
240
10-4
800.
032
790
99.5
91
1.96
50.
054
0.18
60.
003
0.01
00.
0771
0.00
1711
1845
1102
1811
0016
97.9
1719
0000
07.
397
3.23
22.
290
10n.
d.53
200
99.7
51
1.94
80.
050
0.18
60.
003
0.32
90.
0759
0.00
1210
8432
1096
1711
0015
97.9
1675
0000
08.
475
4.63
1.83
-59
-193
.660
100
99.7
41
1.97
70.
047
0.18
60.
003
0.32
50.
0767
0.00
1011
0827
1107
1611
0115
99.9
1764
0000
07.
253
4.37
71.
660
12n.
d.52
590
99.8
61
1.92
00.
047
0.18
50.
003
0.43
40.
0757
0.00
1110
8229
1087
1610
9116
99.1
1775
0000
03.
386
1.57
22.
15-7
11-1
57.1
2470
099
.69
11.
920
0.06
00.
187
0.00
40.
174
0.07
530.
0020
1061
5410
8621
1102
1995
.816
5300
000
6.10
13.
499
1.74
611
183.
371
1899
.75
11.
948
0.04
80.
186
0.00
30.
251
0.07
540.
0011
1076
3210
9617
1099
1696
.717
9600
000
10.0
66.
011.
6715
1510
0.0
4926
99.8
31
1.97
10.
048
0.18
80.
003
0.30
00.
0766
0.00
1311
0933
1105
1711
0917
99.5
1598
0000
04.
329
1.80
52.
40-5
10-2
00.0
2889
099
.60
11.
948
0.05
50.
185
0.00
30.
249
0.07
620.
0016
1089
4210
9519
1093
1698
.716
2500
000
2.99
81.
302
2.30
510
200.
040
1499
.57
11.
931
0.05
90.
183
0.00
30.
227
0.07
650.
0017
1093
4610
8920
1085
1799
.815
4700
000
8.25
75.
192
1.59
310
396.
021
836
99.7
11
1.97
30.
050
0.18
80.
003
0.11
90.
0763
0.00
1310
9434
1105
1711
0916
98.2
1494
0000
05.
299
3.24
71.
633
1029
3.9
1027
399
.63
11.
954
0.05
50.
187
0.00
30.
095
0.07
610.
0017
1083
4510
9719
1103
1797
.515
0200
000
3.48
91.
752
1.99
412
300.
056
4899
.55
11.
982
0.07
00.
185
0.00
40.
138
0.07
720.
0023
1116
6011
0624
1096
1999
.014
6400
000
11.2
87.
371.
53-2
9-4
30.0
7010
099
.83
11.
932
0.04
50.
185
0.00
30.
452
0.07
570.
0010
1083
2610
9315
1095
1698
.614
7300
000
6.98
3.56
1.96
210
500.
022
500
99.7
31
1.96
50.
048
0.18
70.
003
0.38
20.
0767
0.00
1211
0731
1104
1711
0517
99.5
1327
0000
06.
062.
841
2.13
813
162.
545
2999
.64
11.
946
0.06
60.
184
0.00
30.
139
0.07
560.
0022
1075
5610
9522
1090
1896
.614
9000
000
2.76
21.
022
2.70
210
633.
311
847
99.4
01
1.95
30.
065
0.18
40.
003
0.12
90.
0770
0.00
2210
9957
1096
2210
8918
99.9
1460
0000
05.
356
3.21
11.
67-2
11-5
50.0
3430
099
.71
11.
970
0.05
20.
188
0.00
30.
390
0.07
630.
0014
1093
3611
0519
1108
1698
.2
FC-1
- 2
FC-1
- 3
FC-1
- 4
FC-1
- 5
FC-1
- 6
FC-1
- 7
FC-1
- 8
FC-1
- 10
FC-1
- 12
FC-1
- 13
FC-1
- 14
FC-1
- 15
FC-1
- 16
FC-1
- 17
FC-1
- 18
FC-1
- 19
FC-1
- 20
FC-1
- 21
1487
0000
02.
796
1.10
82.
52-3
10-3
06.3
1789
099
.59
11.
927
0.06
10.
185
0.00
30.
239
0.07
540.
0020
1067
5010
8721
1094
1896
.4
Ples
ovic
e - 1
1679
0000
023
.35
1.95
511
.94
713
185.
766
8799
.81
10.
399
0.01
10.
054
0.00
10.
523
0.05
360.
0010
342
4134
08
340
599
.9Pl
esov
ice -
215
7500
000
31.5
33.
043
10.3
619
1157
.931
7599
.28
10.
434
0.01
10.
054
0.00
10.
187
0.05
830.
0013
527
4836
68
338
592
.5Pl
esov
ice -
315
9400
000
17.7
381.
775
9.99
211
550.
017
270
99.9
61
0.38
90.
013
0.05
40.
001
0.15
70.
0521
0.00
1527
263
333
1033
95
101.
9Pl
esov
ice -
415
7200
000
21.1
651.
776
11.9
25
1019
0.4
7856
99.9
51
0.38
70.
011
0.05
40.
001
0.11
30.
0520
0.00
1227
349
333
833
85
101.
7Pl
esov
ice -
515
6400
000
18.5
31.
499
12.3
61
1111
00.0
3512
099
.88
10.
396
0.01
20.
054
0.00
10.
205
0.05
300.
0013
314
5433
89
339
510
0.1
Ples
ovic
e - 6
1525
0000
040
.55
4.88
58.
3015
1280
.049
7599
.27
10.
437
0.01
20.
054
0.00
10.
692
0.05
860.
0008
547
2936
78
338
591
.9Pl
esov
ice -
715
2300
000
16.7
21.
574
10.6
2-4
10-2
64.9
3078
099
.79
10.
397
0.01
30.
054
0.00
10.
378
0.05
350.
0013
337
5133
99
337
599
.6Pl
esov
ice -
815
0400
000
17.7
81.
736
10.2
44
1230
0.0
8128
99.7
11
0.40
40.
013
0.05
40.
001
0.36
00.
0545
0.00
1337
653
344
933
75
98.1
Ples
ovic
e - 9
1489
0000
027
.41
2.47
611
.07
-49
-230
.050
200
99.8
41
0.39
30.
011
0.05
40.
001
0.38
10.
0528
0.00
1031
944
337
833
85
100.
3Pl
esov
ice -
10
1427
0000
019
.28
2.13
39.
046
914
3.8
5352
99.7
91
0.39
70.
011
0.05
40.
001
0.32
90.
0536
0.00
1134
045
339
833
86
99.9
Ples
ovic
e - 1
113
9100
000
21.3
41.
858
11.4
9-5
11-2
20.0
3652
099
.75
10.
396
0.01
20.
053
0.00
10.
303
0.05
390.
0012
355
4933
89
335
598
.9Pl
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ice -
12
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1.32
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0.39
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0.05
30.
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0.29
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1333
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99.2
Ples
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0.47
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1529
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101.
8Pl
esov
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14
1406
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1.63
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100.
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10.
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30.
054
0.00
10.
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330.
0013
328
5233
99
339
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esov
ice -
15
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0.77
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244.
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430.
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356
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698
.2
1 afte
r Hg
corr
ectio
n2 in
coun
ts p
er se
cond
3 radi
ogen
ic
4 Cor
rect
ion
fact
or: 1
= t
hres
hold
204 Pb
cps f
or n
o co
rrec
tion
(80
cps)
; 2 =
thr
esho
ld %
for 20
4 Pb-b
ased
corr
ectio
n (2
1 %
erro
r); 3
= th
resh
old
% fo
r 208 Pb
-bas
edco
rrec
tion
(98.
5 %
radi
ogen
ic P
b)
±2σ
206 Pb
/ 23
8 U±2
σ%
co
n
207 Pb
/ 20
6 Pb±2
σ20
7 Pb/
206 Pb
±2σ
207 Pb
/ 23
5 U
207 Pb
/23
5 U±2
σ20
6 Pb/
238 U
±2σ
ρ
Mea
sure
d co
ncen
trat
ions
Isot
opic
ratio
sC
alcu
late
d ag
es (M
a)
206 Pb
/ 20
4 Pb2
%Pb
3C
4Sa
mpl
e90
Zr (c
ps)
U
(ppm
)Th
(p
pm)
Th/U
204 Pb
(c
ps)
±2σ
% er
ror