Upload
others
View
3
Download
0
Embed Size (px)
Citation preview
Qbs
Qmm
Qcm2
Qcm2
Qcm2
Qmm
Qwcp
Qwcp
QwcpQwcp
Qwcp
Qtu
Qcu
Qtu
Qtu
Qtu
QwcpQtu Qcm2
Qbs
Qcm2
Qtu
Qtu
QbsQtu
Qcm1Qal
Qcm2Qcl
Qcm2
Qwcp
QcuQcm2
Qtu
QtuQtu
Qtu
Qwcp
Qtu
Qcu
Qwcp
Qwcp
Qwcp
Qcm2TQgTQg
Qtu
Qcm2
Qcu
Qcu
Qcm2
Qcm2
Qtu
QalQcm2Qcu
Qwcp
Qbs
Qcm1Qwcp
Qcm2
Qbs
QtuTQg
Qal
Qe
Qwcp
Qtu
Qcm2
Qtu
QwcpQal
Qwcp
Qcm2Qwcp
Qwcp
Qtu
Qcm2
QwcpQcm1
Qwcp
Qcm2
Qtu
Qal
TQgQcm1
Qwcp
Qcm1Qcm2
Qcm1Qcm1
Qcm1
QtuQwcp
QtuQe
Qtu
Qcm2
Qtu
QclQcl
Qtl
Qe
Qwcp
Qtl Qcl
Qcm1
Qcl
Qwcp
Qwcp
Qwcp
Qcl
Qcl
QwcpTQg
Qs
Qs
Qcu
Qcal
QclQtuQtl
Qs
Qcu
Qcm1
Qcm2Qtl
Qtu
Qwcp
Qtl
Qs
Qtu
QclQcu QwcpQtl
Qwcp
Qs
QclQs
Qe
TQg
Qcu
Qcm2
TQg
Qwcp
TgQtl
Tg
Qal
QtlQtu
Qcm1
Tg
Qcm2Qcm1
Qtl
Qal
Qe
Qtu
Qtl
Qal
Qal
Qtl
Qtu
Qbs
Qbs
Qcal
Qcal
Qcu
Qwcp
Qwcp
Qal
Qal
Qtu
Qwcp Qtl
Qe
Qal
Qtl
Qtl
Qtu
Qtu
Qtu
Qal
Qal
Qwcp
Qwcp
Qal
Qal
Qal Qwcp
Qwcp
Qcm2
Qwcp
Tg
Qal
Qwcp
Qtu
Qwcp
Qtu
Qtl
Tg
Qs
TQg
Qal
Qtl
Qwcp
15005 15007
15436
16298
12518
12181
10182
1921
7534 14577
18329
15487
14061
18271
17320
15142
20985
17263
4847
15004
1101915415
961
7172
1536411955
3487
11855
18231
B7 B1B3
22063
10737
1570015273
14157
19103 15346
9161
9
18568
19260
945
15430
6420242
35 45
25
10
18
10
33
23 20
16
30
10
11
52
50
107
11
30
20
3240
30
30
2535
20
15
50
5 0
30
25
3030
2425
2624
20
23
24
17 7
31
3830
47
Qtu
Qbs
Qal
Qal
Qbs
Qbs
Qbs
Qal
Qwcp
Qal
SURFICIAL GEOLOGY OF THE LONG BRANCH QUADRANGLE
MONMOUTH COUNTY, NEW JERSEY
byScott D. Stanford
2000
DESCRIPTION OF MAP UNITS
DESCRIPTION OF MAP SYMBOLS
Qal
Qs
Qcal
Qbs
Qmm
Qe
Qtl
Qtu
Qcl
Qcu
Qcm1
Qcm2
TQg
Tuc
Qwcp
Tg
Age of unit indicated in parentheses. For units spanning more than one period, principal age is listed first. Order of map units in list does not necessarilty indicate chronologic sequence.
ARTIFICIAL FILL--Sand, silt, clay, gravel; brown, gray, yellowish brown; may include demolition debris (concrete, brick, asphalt, glass) and trash. As much as 50 feet thick. In road and railroad embankments, solid-waste landfills, and made land. Many small areas of fill in urban areas are not shown.
ALLUVIUM (Holocene and late Pleistocene)--Sand, silt, clay, peat; yellowish brown, dark brown, gray; and pebble gravel. Abundant organic matter. Sand is chiefly quartz, with some glauconite and mica. Gravel is quartz and quartzite with minor ironstone. As much as 15 feet thick. Deposited in floodplains, channels, and ground-water seepage areas.
SWAMP AND MARSH DEPOSITS (Holocene and late Pleistocene)--Freshwater peat and organic silt, sand, and clay; dark brown to black. As much as 10 feet thick.
COLLUVIUM AND ALLUVIUM (Holocene and late Pleistocene)--Interbedded alluvium and colluvium in headwater valleys. As much as 15 feet thick.
BEACH AND NEARSHORE MARINE SAND (Holocene)--Sand, very pale brown to light gray; and pebble gravel. As much as 100 feet thick but generally less than 20 feet thick. Deposited during Holocene sea-level rise. Underlain by estuarine deposits in places.
ESTUARINE DEPOSITS (Holocene)--Salt-marsh peat, organic silt and clay; dark brown to black; sand and minor pebble gravel; very pale brown, white, gray. As much as 100 feet thick. Deposited during Holocene sea-level rise. Commonly underlain by lower terrace deposits.
EOLIAN DEPOSITS (late Pleistocene and Holocene)--Fine-to-medium sand, very pale brown to reddish yellow. Sand is chiefly quartz with minor glauconite and mica in places. As much as 20 feet thick. Forms dunes and sand sheets.
LOWER TERRACE DEPOSITS (late Pleistocene)--Sand and minor silt; yellow, yellowish brown, reddish yellow; and pebble gravel. Sand is chiefly quartz with some glauconite and mica. Gravel is quartz and quartzite with minor ironstone. As much as 30 feet thick. Forms stream terraces with surfaces 5 to 20 feet above the modern floodplain.
LOWER COLLUVIUM (late Pleistocene)--Sand, silt, minor clay; yellow, yellowish brown, reddish yellow, light gray; some quartz and ironstone pebbles. As much as 20 feet thick, generally less than 10 feet thick. Forms aprons graded to lower terraces or the modern floodplain.
CAPE MAY FORMATION, UNIT 2 (late Pleistocene)--Sand, minor silt and clay; very pale brown, yellow, white, olive yellow; and pebble gravel. Sand is chiefly quartz with minor glauconite and mica; gravel is quartz and quartzite. As much as 50 feet thick. Forms a shore-facing terrace with surface elevation between 15 and 40 feet. Deposited in beach and estuarine settings during the Sangamon sea-level highstand between 120,000 and 130,000 years ago.
CAPE MAY FORMATION, UNIT 1 (middle? Pleistocene)--Sand, minor silt and clay; very pale brown, yellow, reddish yellow; and pebble gravel. Sand is chiefly quartz, with minor glauconite and mica; gravel is quartz and quartzite. As much as 30 feet thick. Forms a shore-fronting marine terrace with surface elevation between 50 and 75 feet. Deposited in beach and estuarine settings during a middle? Pleistocene sea-level highstand.
UPPER TERRACE DEPOSITS (middle Pleistocene)--Sand, minor silt; yellow, reddish yellow; and pebble gravel. Sand is chiefly quartz; glauconite and mica aregenerally less abundant than in the lower terrace deposits and alluvium. Gravel is quartz, quartzite, and minor ironstone. As much as 20 feet thick. Forms terraces with surfaces 20 to 50 feet above the modern floodplain.
UPPER COLLUVIUM (middle Pleistocene)--Sand, silt, minor clay; pale brown, yellow, reddish yellow; some quartz, quartzite and ironstone pebbles. As much as20 feet thick. Forms aprons graded to upper terraces.
UPLAND GRAVEL, LOWER PHASE (late Pliocene-middle Pleistocene)--Sand, minor silt; yellow to reddish yellow; and pebble gravel. Sand is chiefly quartz with minor glauconite and mica; gravel is quartz and quartzite. As much as 20 feet thick. Caps lower uplands and interfluves.
UPLAND GRAVEL (Pliocene-early Pleistocene)--Sand, yellow to reddish yellow, and pebble gravel; minor fine-cobble gravel. Sand is chiefly quartz, with minor glauconite in places; gravel is quartz and quartzite with minor weathered chert. Locally iron-cemented. As much as 20 feet thick. In erosional remnants on hilltops and interfluves.
UPLAND COLLUVIUM (Pliocene-early Pleistocene)--Sand, minor silt; white, yellow, reddish yellow; with quartz, quartzite, and ironstone pebbles, and minor weathered chert. As much as 10 feet thick. In erosional remnants on sloping interfluves and ridgetops, graded to upland gravel deposits.
WEATHERED COASTAL PLAIN FORMATIONS--Exposed sand and clay of Coastal Plain bedrock formations. May be overlain by thin, patchy alluvium and colluvium. Quartz and ironstone pebbles left from erosion of surficial deposits may be present on the surface and in the upper several feet of the formation.
Contact--Contacts of alluvium, beach deposits, and estuarine deposits are well-defined by landforms and are drawn from 1:12,000-scale aerial stereophotos. Contacts of other units are approximately located based on both landforms and field observation points.
Material observed in hand-auger hole, exposure, or excavation.
Well or boring--Upper number is identifier, lower number is thickness of surficial material. Identifers of the form ‘xxxx’ are N. J. Department of Environmental Protection well permit numbers (all carry the prefix ‘29-’). Identifiers of the form ‘xx-xx-xxx’ are N. J. Atlas Sheet grid locations of entries in the N. J. Geological Survey permanent note collection. Identifiers of the form ‘Bxx’ are miscellaneous borings on file at the N. J. Geological Survey.
Shallow topographic basin--Of probable periglacial origin. Basins within eolian deposits may be of eolian origin. Drawn from 1:12,000-scale aerial stereophotos taken in 1979.
7000 FEET1000 10000 2000 3000 4000 5000 6000
.5 1 KILOMETER1 0
SCALE 1:240001/21 0 1 MILE
CONTOUR INTERVAL 20 FEETNATIONAL GEODETIC VERTICAL DATUM OF 1929
NE
WJE
RS
EYGEOLOGICAL
SUR
VE
Y
1835
Quadrangle Location
NewJersey
APPROXIMATE MEANDECLINATION, 1981
MA
GN
ETIC
NO
RTH
TRU
E N
OR
TH
12˚
74º07'30"40º22'30"
74º00'00"40º22'30"
40º15'00"74º00'00"
Geology mapped 1994.
74º07'30"40º15'00"
Base map from U. S. Geological Survey, 1954. Photorevised 1981.
DEPARTMENT OF ENVIRONMENTAL PROTECTIONDIVISION OF SCIENCE, RESEARCH, AND TECHNOLOGYNEW JERSEY GEOLOGICAL SURVEY
SURFICAL GEOLOGY OF THE LONG BRANCH QUADRANGLEMONMOUTH COUNTY, NEW JERSEY
OPEN FILE MAP OFM 38
SANDY HOOK
MA
RLB
OR
O
ASBURY PARK