State | Oregon |
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Name | Mafic and intermediate vent rocks |
Geologic age | Miocene to Pliocene |
Lithologic constituents | Major
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow, Stock or pipe, Pyroclastic-cinder cone)
Igneous > Volcanic > Mafic-volcanic > Andesite (Flow, Stock or pipe, Pyroclastic-cinder cone)
|
References | Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000. |
NGMDB product | |
Counties | Lake |