| State | California |
|---|---|
| Name | Mesozoic volcanic rocks, unit 5 (Northern Sierra Nevada and Eastern Klamath Mountains) |
| Geologic age | Late Permian(?) to Jurassic |
| Lithologic constituents |
Major
Igneous > Volcanic > Felsic-volcanic (Flow, Pyroclastic-tuff, Dike or sill)Quartz keratophyre to dacite flows, tuff, tuff breccia, dikes, and shallow intrusive bodies
Igneous > Volcanic > Mafic-volcanic (Flow, Pyroclastic-tuff, Dike or sill)Andesitic tuff breccia, tuff, flows, and shallow intrusive rocks
Minor
Sedimentary > Clastic (Bed)Volcaniclastic sandstone and conglomerate
|
| Comments | Northern Sierra Nevada and eastern Klamath Mountains. Primarily andesitic tuff breccia, tuff, and flows; marine |
| Stratigraphic units | Arvison Fm., Bagley Andesite, Bully Hill Rhyolite, Kettle Fm. (of McMath), Sailor Canyon Fm. (part), Pit Fm., Foreman Fm., Hinchman Fm., Hull Fm., Milton Fm. (part), Tuttle Lake Fm. |
| References | Jennings, C.W., Strand, R.G., Rogers, T.H., Boylan, R.T., Moar, R.R., and Switzer, R.A., 1977, Geologic Map of California: California Division of Mines and Geology, Geologic Data Map 2, scale 1:750,000.Jennings, C.W., 1985, An explanatory text to accompany the 1:750,000 scale fault and geologic maps of California: California Division of Mines and Geology, Bulletin 201, 197 p.Gay, T.E., Jr., and Aune, Q.A., 1958, Geologic map of California, Olaf P. Jenkins edition, Alturas sheet, scale 1:250,000.Burnett, J.L., and Jennings, C.W., 1962, Geologic map of California, Olaf P. Jenkins edition, Chico sheet, scale 1:250,000.Strand, R.G., 1962, Geologic map of California, Olaf P. Jenkins edition, Redding sheet, scale 1:250,000.Strand, R.G., and Koenig, J.B., 1966, Geologic map of California, Olaf P. Jenkins edition, Sacramento sheet, scale 1:250,000.Lydon, P.A., Gay, T.E., Jr., and Jennings, C.W., 1960, Geologic map of California, Olaf P. Jenkins edition, Westwood sheet, scale 1:250,000.Fraticelli, L.A., Albers, J.P., Irwin, W.P., and Blake, M.C., Jr., 1987, Geologic map of the Redding 1 X 2 degree quadrangle, Shasta, Tehama, Humboldt, and Trinity Counties, California: U.S. Geological Survey Open-File Report 87-257, scale 1:250,000.https://pubs.er.usgs.gov/publication/ofr87257 Irwin, W.P., 1994, Geologic map of the Klamath Mountains, California and Oregon: U.S. Geological Survey Miscellaneous Investigations Series Map I-2148, scale 1:500,000.https://pubs.er.usgs.gov/publication/i2148 Harwood, D.S., 1992, Stratigraphy of Paleozoic and lower Mesozoic rocks in the Northern Sierra Terrane, California: U.S. Geological Survey Bulletin 1957, 78 p., scale 1:250,000.https://pubs.er.usgs.gov/publication/b1957 D'Allura, J.A., Moores, E.M., and Robinson, L., 1977, Paleozoic rocks of the northern Sierra Nevada: their structural and paleogeographic implications, in Stewart, J.H., Stevens, C.H., and Fritsche, A.E., eds., Paleozoic paleogeography of the western United States: Society of Economic Paleontologists and Mineralogists, Pacific Section, Pacific Coast Paleogeography Symposium 1, p. 395-408.Albers, J.P., and Robertson, J.F., 1961, Geology and ore deposits of East Shasta copper-zinc district, Shasta County, California: U.S. Geological Professional Paper 338, 107 p., scale 1:24,000.https://pubs.er.usgs.gov/publication/pp338 McMath, V.E., 1966, Geology of the Taylorsville area, northern Sierra Nevada, in Bailey, E.H., ed., Geology of northern California: California Division of Mines and Geology Bulletin 190, p. 173-183. |
| NGMDB product | |
| Counties | El Dorado - Lassen - Nevada - Placer - Plumas - Shasta - Sierra |