Tensleep Sandstone
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The Tensleep Sandstone is a geological formation of Pennsylvanian to very early Permian age in Wyoming.[2]
Quick Facts Type, Underlies ...
Tensleep Formation | |
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Stratigraphic range: Late Pennsylvanian-very Early Permian ~308–298 Ma | |
Type | Geological formation |
Underlies | Phosphoria & Chugwater Formations |
Overlies | Sacajewea & Amsden Formations |
Thickness | up to 535 feet (160 m) |
Lithology | |
Primary | Sandstone |
Other | Limestone |
Location | |
Coordinates | 42.6°N 108.2°W / 42.6; -108.2 |
Approximate paleocoordinates | 4.3°N 35.2°W / 4.3; -35.2 |
Region | Wyoming |
Country | USA |
Type section | |
Named for | Ten Sleep, Wyoming |
Named by | N.H. Darton[1] |
Year defined | 1904 |
Close
The formation is composed of fine- to medium-grained sandstone, light gray and yellowish gray; generally slightly to moderately calcareous; some dolomite and sandy dolomite beds; mostly thick to massive sets of low-angle, wedge-planar crossbeds of dunes. Forms cliffs 61-91m (200-300 feet) thick.[3]