| State | Colorado |
|---|---|
| Name | Rhyolitic intrusive rocks and flows of late-volcanic bimodal suite |
| Geologic age | Tertiary |
| Lithologic constituents | Major
Igneous > Volcanic > Felsic-volcanic > Rhyolite
|
| References | Tweto, Ogden, 1979, Geologic Map of Colorado: U.S. Geological Survey Special Geologic Map, scale 1:500,000. |
| NGMDB product | |
| Counties | Chaffee - Conejos - Eagle - Grand - Gunnison - Hinsdale - Rio Grande - Routt - San Juan |