Washakie Formation

Gray, green, tan, and dull-red tuffaceous arkosic sandstone and claystone.
State Wyoming
Name Washakie Formation
Geologic age Eocene
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Claystone (Tuffaceous)
Sedimentary > Clastic > Sandstone (Tuffaceous)
Incidental
Igneous > Volcanic (Pyroclastic-tuff)
References
NGMDB product
Counties Carbon - Sweetwater