Quaternary volcanic flow rocks, unit 1 (Cascade Volcanic Field) (CAQv1;0)

State	California
Name	Quaternary volcanic flow rocks, unit 1 (Cascade Volcanic Field)
Geologic age	Quaternary
Original map label	Qv
Primary rock type	andesite
Secondary rock type	basalt
Other rock types	rhyolite; dacite; volcanic breccia (agglomerate)
Lithologic constituents	Minor Igneous > Volcanic > Mafic-volcanic > Basalt (Flow) Igneous > Volcanic > Mafic-volcanic > Andesite (Flow) Igneous > Volcanic > Mafic-volcanic > Andesite (Volcaniclastic, lahar) Incidental Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Flow) Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow) Igneous > Volcanic > Mafic-volcanic > Andesite (Volcaniclastic, volcanic breccia) Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Volcaniclastic, volcanic breccia) Igneous > Volcanic > Mafic-volcanic > Basalt (Volcaniclastic, volcanic breccia) Igneous > Volcanic > Mafic-volcanic > Basalt (Volcaniclastic, lahar) Igneous > Volcanic > Mafic-volcanic > Basaltic-andesite (Volcaniclastic, lahar) Igneous > Volcanic > Felsic-volcanic > Dacite (Pyroclastic) Igneous > Volcanic > Mafic-volcanic > Andesite (Pyroclastic) Igneous > Volcanic > Felsic-volcanic > Rhyolite (Pyroclastic) Igneous > Volcanic > Felsic-volcanic > Dacite (Flow)
Map references	Jennings, C.W., Strand, R.G., and Rogers, T.H., 1977, Geologic map of California: California Division of Mines and Geology, scale 1:750,000.
Unit references	Luedke, R.G., and Smith, R.L., 1981, Map showing distribution, composition, and age of late Cenozoic volcanic centers in California and Nevada: U.S. Geological Survey Miscellaneous Investigations Series Map I-1091-C, scale 1:1,000,000. [http://pubs.er.usgs.gov/publication/i1091C] Jennings, C.W., Strand, R.G., and Rogers, T.H., 1977, Geologic map of California: California Division of Mines and Geology, scale 1:750,000.
Geographic coverage	El Dorado - Lassen - Modoc - Nevada - Placer - Plumas - Shasta - Sierra - Siskiyou - Tehama