| State | Colorado |
|---|---|
| Name | Casper Fm and Lower part of Fountain Fm |
| Geologic age | Permian-Pennsylvanian |
| Lithologic constituents | Major
Sedimentary > Clastic > Sandstone > Arkose
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Conglomerate
|
| References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
| NGMDB product | |
| Counties | Larimer |