State | Wyoming |
---|---|
Name | Niobrara and Frontier Formations, and Mowry and Thermopolis Shales |
Geologic age | Lower Cretaceous-Upper Cretaceous |
Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Carbonate > Limestone
Sedimentary > Clastic > Sandstone
Minor
Sedimentary > Clastic > Mudstone > Shale > Black-shale
Incidental
Sedimentary > Clastic > Mudstone > Claystone > Bentonite
|
References | |
NGMDB product | |
Counties | Laramie |