| State | Colorado |
|---|---|
| Name | Dolores Fm |
| Geologic age | Triassic |
| Lithologic constituents |
Major
Sedimentary > Clastic > Siltstone
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone
Minor
Sedimentary > Clastic > Conglomeratelimestone-pellet conglomerate
|
| References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
| NGMDB product | |
| Counties | Archuleta - Dolores - Hinsdale - La Plata - Montezuma - San Juan - San Miguel |