Wind River Formation (WYTwdr;0)

WIND RIVER FORMATION 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.

State	Wyoming
Name	Wind River Formation
Geologic age	Phanerozoic \| Cenozoic \| Tertiary \| Eocene
Original map label	Twdr
Primary rock type	claystone
Secondary rock type	siltstone
Other rock types	sandstone; coal
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Claystonetuffaceous at top Minor Sedimentary > Clastic > Conglomerate Sedimentary > Clastic > Sandstone Sedimentary > Clastic > Siltstone Incidental Sedimentary > Coal
Map references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Unit references	Love, J.D. and Christiansen, Ann Coe, 1985, Geologic Map of Wyoming: U.S. Geological Survey. [http://pubs.er.usgs.gov/publication/ofr83802]
Geographic coverage	Albany - Carbon - Fremont - Hot Springs - Natrona - Sublette - Teton