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Mineral Resources > Online Spatial Data > Geology > by state > Oregon

Basaltic lava flows

Basaltic and basaltic andesite lava flows and breccia; grades laterally into rare bedded palagonitic tuff and breccia
StateOregon
NameBasaltic lava flows
Geologic ageOligocene to Miocene
Original map labelTub
Primary rock typebasalt
Secondary rock typevolcanic breccia (agglomerate)
Other rock types
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Flow)
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow)
Minor
Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Volcaniclastic, volcanic breccia)
Igneous > Volcanic > Mafic-volcanic > Basalt (Volcaniclastic, volcanic breccia)
Map references
Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.
Unit references
Walker, G.W. and MacLeod, N.S., 1991, Geologic map of Oregon: U.S. Geological Survey, scale 1:500,000.
Geographic coverageClackamas - Douglas - Jackson - Klamath - Lane - Linn - Marion

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