Tatman Formatin

Drab nontuffaceous claystone, oil shale, lignite, and sandstone.
State Wyoming
Name Tatman Formatin
Geologic age Eocene
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale > Oil-shale
Sedimentary > Clastic > Mudstone > Claystone
Sedimentary > Coal > Lignite
Minor
Sedimentary > Clastic > Sandstone
References
NGMDB product
Counties Big Horn - Hot Springs - Park - Washakie