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 |