10.Lingkungan Pengendapan (1)

Sedimentary EnvironmentSedimentary Environment

Lingkungan Pengendapan

GLGL--2051/NUGROHO2051/NUGROHO

Sedimentary Environments•• ContinentalContinental

•• Alluvial fan, rivers/Alluvial fan, rivers/fluvialfluvial, lakes/, lakes/lacustrinelacustrine, , desert, etc.desert, etc.

•• Transitional Transitional –– coastal coastal -- along ocean shoresalong ocean shores•• Estuaries and DeltasEstuaries and Deltas•• BeachBeach•• Offshore islands Offshore islands •• LagoonsLagoons•• Etc.Etc.

•• MarineMarine•• Shallow marine environments (< 200m)Shallow marine environments (< 200m)•• Deep marine environments (beyond the Deep marine environments (beyond the

continental shelf)continental shelf)

Alluvial Fan Facies

Alluvial fans can basically be described as fanAlluvial fans can basically be described as fan shaped deposits that are fed by a shaped deposits that are fed by a channel emanating from a very narrow, steep valley in a region ochannel emanating from a very narrow, steep valley in a region of high f high

topographic relief.topographic relief. This high relief is often due to the fact that most alluvial faThis high relief is often due to the fact that most alluvial fans ns are found in association with regions of active faulting. are found in association with regions of active faulting.

Braided River Facies

Meandering River Facies

Barrier bar

Mangrove swamp

Estuaries

Tidal flat

Delta Facies

LAKE / LACUSTRINELAKE / LACUSTRINE

Deep MarineDeep Marine

Carbonate platforms