State | Colorado |
---|---|
Name | Hermosa Fm |
Geologic age | Pennsylvanian |
Lithologic constituents |
Major
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone > Arkose
Sedimentary > Clastic > Conglomerate
Minor
Sedimentary > Chemical > Evaporite > Gypsum
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 | Mesa - Montrose - Ouray - San Miguel |