| State | Colorado |
|---|---|
| Name | Dakota, Morrison, and Sundance Fms |
| Geologic age | Cretaceous-Jurassic |
| Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Mudstone
Sedimentary > Clastic > Sandstone
Minor
Sedimentary > Clastic > Mudstone > Claystone
|
| References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
| NGMDB product | |
| Counties | Boulder - Grand - Jackson - Larimer - Routt |