| State | California |
|---|---|
| Name | Triassic marine rocks, unit 2 (Eastern Klamath Mountains) |
| Geologic age | Middle to Late Triassic |
| Lithologic constituents |
Major
Sedimentary > Clastic > Mixed-clastic > Siltstone-mudstone (Bed)
Sedimentary > Clastic > Mudstone (Bed)
Minor
Sedimentary > Carbonate > Limestone (Bed)
Igneous > Volcanic > Felsic-volcanic > Dacite (Pyroclastic, Flow)
Incidental
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Conglomerate (Bed)
|
| Comments | Eastern Klamath Mountains. Shale, sandstone, limestone, and pyroclastic rocks |
| Stratigraphic units | Brock Shale, Hosselkus Ls., Modin Fm., Pit 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.Strand, R.G., 1962, Geologic map of California, Olaf P. Jenkins edition, Redding sheet, scale 1:250,000.Strand, R.G., 1964, Geologic map of California, Olaf P. Jenkins edition, Weed 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.Wagner, D.L., and Saucedo, G.J., 1987, Geologic map of the Weed quadrangle, California: California Division of Mines and Geology, Regional Geologic Map Series, Map 4A, 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 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 |
| NGMDB product | |
| Counties | Shasta |