Absaroka Volcanic Supergroup: Thorofare Creek Group

Absaroka Volcanic Supergroup: Thorofare Creek Group - Aycross Formation

Brightly variegated bentonitic claystone and tuffaceous sandstone, grading laterally into greenish-gray sandstone and claystone. In and east of Jackson Hole contains gold-bearing lenticular quartzite conglomerate.

State	Wyoming
Name	Absaroka Volcanic Supergroup: Thorofare Creek Group - Aycross Formation
Geologic age	Eocene
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Claystone Sedimentary > Clastic > Sandstone Minor Sedimentary > Clastic > Conglomerate Incidental Igneous > Volcanic (Pyroclastic-tuff)
References	Love, J.D. and Christiansen, A.C., 1985, Geologic Map of Wyoming: U.S. Geological Survey, scale 1:500,000. https://pubs.er.usgs.gov/publication/70046739
NGMDB product	NGMDB product page for 16366
Counties	Fremont - Hot Springs - Park - Teton

Absaroka Volcanic Supergroup: Thorofare Creek Group - Aycross Formation

Love, J.D. and Christiansen, A.C., 1985, Geologic Map of Wyoming: U.S. Geological Survey, scale 1:500,000.