New Fork Tongue of Wasatch and Fontenelle Tongue or Member of Green River

New Fork Tongue - dull-red and green mudstone, brown sandstone, and thin limestone beds, merging southward in T. 23 N. with other units. Wasatch and Fontenelle Tongue or Member - oil shale, marlstone, limestone, and siltstone; occurs along Green and New Fork Rivers and on west side of Green River Basin from T. 33 N. south to and lensing out in T. 17 N.) of Green River.
State Wyoming
Name New Fork Tongue of Wasatch and Fontenelle Tongue or Member of Green River
Geologic age Eocene
Lithologic constituents
Major
Sedimentary > Carbonate > Marlstone
Sedimentary > Clastic > Mudstone > Shale > Oil-shale
Sedimentary > Clastic > Mudstone
Minor
Sedimentary > Clastic > Siltstone
Sedimentary > Clastic > Sandstone
Sedimentary > Carbonate > Limestone
References
NGMDB product
Counties Lincoln - Sublette