| State | Oregon |
|---|---|
| Name | Silicic vent complexes |
| Geologic age | Miocene |
| Lithologic constituents |
Major
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-rhyolite (Stock or pipe, Dike or sill)
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-dacite (Stock or pipe, Dike or sill)
Minor
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow, Volcaniclastic-volcanic breccia)
Igneous > Volcanic > Felsic-volcanic > Dacite (Flow, Volcaniclastic-volcanic breccia)
|
| References | Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000. |
| NGMDB product | |
| Counties | Deschutes - Douglas - Grant - Hood River - Jackson - Jefferson - Klamath - Lane - Linn - Marion - Wasco |