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Tensleep Sandstone and Amsden Formation

TENSLEEP SANDSTONE AND AMSDEN FORMATION. North Wyoming: TENSLEEP SANDSTONE--White to gray sandstone containing thin limestone and dolomite beds. Permian fossils have been found in the topmost beds of the Tensleep at some localities in Washakie Range, Owl Creek Mountains, and southern Bighorn Mountains. AMSDEN FORMATION--Red and green shale and dolomite; at base is brown sandstone. South Wyoming: TENSLEEP SANDSTONE AND AMSDEN FORMATION. TENSLEEP SANDSTONE--White to gray sandstone containing thin limestone and dolomite beds. AMSDEN FORMATION--Red and green shale and dolomite; at base is persistent red to brown sandstone.
State Wyoming
Name Tensleep Sandstone and Amsden Formation
Geologic age Phanerozoic | Paleozoic | Carboniferous Mississippian-Late Pennsylvanian(?) Permian
Primary rock type sandstone
Secondary rock type carbonate
Other rock types shale
Lithologic constituents
Minor
Sedimentary > Clastic > Sandstone
Sedimentary > Carbonate > Limestone
Sedimentary > Carbonate > Dolostone
Sedimentary > Clastic > Mudstone > Shale
Map references
Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey.
Unit references
Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey.
Counties Big Horn - Carbon - Fremont - Hot Springs - Johnson - Natrona - Park - Sheridan - Sublette - Teton - Washakie