Paleozoic metavolcanic rocks, unit 2 (Northeastern Sierra Nevada)

Undivided Paleozoic metavolcanic rocks. Mostly flows, breccia and tuff, including greenstone, diabase, and pillow lavas; minor interbedded sedimentary rocks
State California
Name Paleozoic metavolcanic rocks, unit 2 (Northeastern Sierra Nevada)
Geologic age Devonian and Permian
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Andesite (Flow, Pyroclastic-tuff, Dike or sill)Weakly metamorphosed. Includes flows, tuff, tuff breccia, and hypabyssal intrusive rocks
Minor
Igneous > Volcanic > Felsic-volcanic (Pyroclastic-tuff)Weakly metamorphosed. Includes tuff, tuff breccia, and intrusive rhyolite
Igneous > Volcanic > Mafic-volcanic > Basalt (Flow-pillows, Pyroclastic-tuff)Weakly metamorphosed. Pillow lava, tuff, and tuff breccia
Comments Northeastern Sierra Nevada. Weakly metamorphosed volcanic rocks of primarily andesitic composition
Stratigraphic units Sierra Buttes Fm., Taylor Fm., Goodhue Fm., Robinson Fm., Reeve 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.

Burnett, J.L., and Jennings, C.W., 1962, Geologic map of California, Olaf P. Jenkins edition, Chico 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.

Saucedo, G.J., and Wagner, D.L., 1992, Geologic map of the Chico quadrangle, California: California Division of Mines and Geology, Regional Geologic Map Series, Map 7A, scale 1:250,000.

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.

Miller, M.M., and Harwood, D.S., 1990, Paleogeographic setting of upper Paleozoic rocks in the northern Sierra and eastern Klamath terranes, northern California, in Harwood, D.S., and Miller, M.M., eds., Paleozoic and early Mesozoic paleogeographic relations; Sierra Nevada, Klamath Mountains, and related terranes: Geological Society of America Special Paper 255, p. 175-192.

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 Lassen - Plumas - Sierra