Hillard Shale

Dark-gray to tan claystone, siltstone, and sandy shale.
State Wyoming
Name Hillard Shale
Geologic age Upper Cretaceous
Lithologic constituents
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Mudstone > Claystone
Sedimentary > Clastic > Siltstone
References
NGMDB product
Counties Lincoln - Uinta