| State | Colorado |
|---|---|
| Name | One or more Ordovician fms |
| Geologic age | Ordovician |
| Lithologic constituents |
Major
Sedimentary > Carbonate > Limestone
Minor
Sedimentary > Clastic > Sandstone
|
| References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
| NGMDB product | |
| Counties | El Paso - Fremont - Saguache - Teller |