| State | Colorado |
|---|---|
| Name | Denver Fm or lower part of Dawson Arkose |
| Geologic age | Tertiary-Cretaceous |
| Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone > Arkose
Sedimentary > Clastic > Mudstone
Minor
Sedimentary > Clastic > Conglomerate
Sedimentary > Coal (Bed)
|
| References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
| NGMDB product | |
| Counties | Adams - Arapahoe - Denver - Douglas - Elbert - El Paso - Jefferson - Weld |