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Quaternary volcanic flow rocks, unit 2 (Long Valley Caldera)

Quaternary volcanic flow rocks; minor pyroclastic deposits; in part Pliocene and Miocene.
State California
Name Quaternary volcanic flow rocks, unit 2 (Long Valley Caldera)
Geologic age Quaternary
Comments includes Mammoth Mountain volcano
Primary rock type rhyolite
Secondary rock type andesite
Other rock types basalt
Lithologic constituents
Major
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Flow)
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Dome)
Minor
Igneous > Volcanic > Mafic-volcanic > Andesite (Dome)
Igneous > Volcanic > Mafic-volcanic > Andesite (Flow)
Incidental
Igneous > Volcanic > Mafic-volcanic > Basalt (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.
Bailery, R.A., 2004, Eruptive history and chemical evolution of the precaldera and postcaldera basalt-dacite sequences, Long Valley, California; implications for magma sources, current seismic unrest, and future volcanism: U.S. Geological Survey Professional Paper 1692, 75 p.
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.
Counties Fresno - Madera - Mono