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Paleoenvironments of the Siwalik Group
Lithofacies and Environments of Bed
29 other sections not shown
abundant accretion alluvial fan Anticline Awidon Mesa basalt bioclastic bioclastic carbonate braided rivers Cagayan Walley calcite channel clasts claystone climate conglomerate and sandstone Coppens cross-bedded delta plain Denen Dora depositional environments developed distal distributary East Rudolf East Turkana Basin eastern Eyasi fault fauna fine-grained sandstone fining-upward flood plain flow fluvial fossil gastropod Geol geologic Hadar Hadar Formation hominid horizons ignimbrite interbedded interfingers Karari Karari Escarpment KBS Tuff Kenya Koobi Fora Koobi Fora Formation lacustrine Laetolil Beds Lake Rudolf Basin Lake Turkana lake-margin deposits laminated lavas Leakey lenticular lithofacies localities Lower Member lower Omo meandering Miocene mudrocks mudstone Ngorongoro occur overlies paleosols planar Pleistocene Plio-Pleistocene Pliocene polymictic conglomerate pyroclastic rift River rocks root casts sand sandstone sedimentary sediments sequence siltstone siltstone facies silty clay Siwalik soil strata stratigraphic subfacies Submember tectonic thin tion trough cross-bedded Tuff Tuff IB tuffaceous units Upper Member valley vertebrate volcanic zone