State | Colorado |
---|---|
Name | Pierre Shale (Kp), Niobrara (Kn), and Carlile, Greenhorn, and Graneros (Kcg) Fms, undivided |
Geologic age | Cretaceous |
Lithologic constituents | Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Carbonate > Limestone
|
References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
NGMDB product | |
Counties | Costilla - Huerfano - Jefferson - Las Animas |