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BASEMAPS
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WEATHER
Wind River Formation (WYTwdr;0)
Geologic Formation
in
WY
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Lithology
Claystone
Conglomerate
Sandstone
Other
(9,745 mi²)
Geologic Age
Eocene (56 Ma – 33.9 Ma ago)
Geologic Unit Label
Twdr
Northwest Wyoming (Jackson Hole) - Variegated red and white claystone and siltstone; largely nontuffaceous except near the top; lenticular coal unit in middle. At base locally includes equivalent of Indian Meadows Formation. Central Wyoming - Variegated claystone and sandstone; lenticular conglomerate. Age of tuff at top 49 Ma.
—
USGS
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Geologic Formation
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