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Quaternary pyroclastic and volcanic mudflow deposits, unit 3 (Sutter Buttes)

Quaternary pyroclastic and volcanic mudflow deposits.
State California
Name Quaternary pyroclastic and volcanic mudflow deposits, unit 3 (Sutter Buttes)
Geologic age Quaternary (1.5-2.5 Ma)
Primary rock type rhyolite
Secondary rock type andesite
Other rock types dacite; volcanic breccia (agglomerate)
Lithologic constituents
Minor
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Pyroclastic)
Igneous > Volcanic > Felsic-volcanic > Rhyolite (Volcaniclastic, lahar)
Igneous > Volcanic > Felsic-volcanic > Dacite (Volcaniclastic, lahar)
Igneous > Volcanic > Felsic-volcanic > Dacite (Pyroclastic)
Igneous > Volcanic > Mafic-volcanic > Andesite (Volcaniclastic, lahar)
Igneous > Volcanic > Mafic-volcanic > Andesite (Pyroclastic)
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.
Donnelly-Nolan, J.M., Hearn, B. C. Jr., Curtis, G. H., and Drake, R.E., 1981, Geochronology and evolution of the Clear Lake Volcanics: U. S. Geological Survey Professional Paper 1141, pp.47-60.
Hausback, B.P. and Nilsen, T.H., 1999, Sutter Buttes: California Division of Mines and Geology Special Publication, v. 119, p. 246-254.
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 Sutter