| State | California |
|---|---|
| Name | Paleozoic metavolcanic rocks, unit 3 (Northwestern Sierra Nevada) |
| Geologic age | Permian to Jurassic |
| Lithologic constituents |
Major
Igneous > Volcanic > Mafic-volcanic (Volcanicalstic-volcanic breccia, Flow-pillows)Thoroughly recrystallized but retains primary volcanic features such as volcanic breccia, bombs, lapilli, and pillows
Minor
Metamorphic > AmphiboliteMetamorphosed basalt
Igneous > Volcanic > Felsic-volcanicThoroughly recrystallized
|
| Comments | Northwestern Sierra Nevada. Metamorphosed and deformed volcanic rocks of primarily intermediate (andesitic to dacitic) composition |
| Stratigraphic units | Calaveras Complex (part), Horseshoe Bend Fm. (part), Franklin Canyon Fm. (part), Slate Creek Complex (part) |
| 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.Edelman, S.H., Day, H.W., Moores, E.M., Zigan, S.M., Murphy, T.P., and Hacker, B.R., 1989, Structure across a Mesozoic ocean-continent suture zone in the northern Sierra Nevada, California: Geological Society of America Special Paper 224, 56 p.Silberling, N.J., Jones, D.L., Blake, M.C., Jr., and Howell, D.G., 1987, Lithotectonic terrane map of the western conterminous United States: U.S. Geological Survey Miscellaneous Field Studies Map MF-1874-C, scale 1:2,500,000.https://pubs.er.usgs.gov/publication/mf1874C Hietanen, A., 1981, The Feather River area as a part of the Sierra Nevada suture system in California: U.S. Geological Survey Professional Paper 1226-B, 13 p.https://pubs.er.usgs.gov/publication/pp1226AC Hietanen, A., 1973, Geology of the Pulga and Bucks Lake quadrangles, Butte and Plumas Counties, California: U.S. Geological Survey Professional Paper 731, 66 p.https://pubs.er.usgs.gov/publication/pp731 |
| NGMDB product | |
| Counties | Butte - Plumas - Yuba |