| State | California |
|---|---|
| Name | Paleozoic marine rocks, undivided, unit 9 (Western Klamath Mountains) |
| Geologic age | Devonian to Jurassic |
| Lithologic constituents |
Major
Tectonite > Melange (Melange)Disrupted chert, argillite, volcanic rocks, and clastic sedimentary rocks containing blocks of limestone, marble, and amphibolite
Minor
Sedimentary > Chemical > Chert (Bed)
Igneous > Volcanic > Mafic-volcanic
Sedimentary > Clastic > Sandstone (Bed)
Metamorphic > Metasedimentary > Metaclastic > Argillite
Sedimentary > Clastic > Mudstone (Bed)
Incidental
Metamorphic > Metasedimentary > Metacarbonate > MarbleBlocks in melange
Metamorphic > AmphiboliteBlocks in melange
Sedimentary > Carbonate > Limestone (Melange)Blocks in melange
Metamorphic > Metasedimentary > Metaclastic > Quartzite
Metamorphic > Metasedimentary > Metaclastic > Phyllite
Sedimentary > Clastic > Conglomerate (Bed)
Metamorphic > Schist
Igneous > Volcanic > Felsic-volcanic
|
| Comments | Western Klamath Mountains. Structurally complex sedimentary, metasedimentary, volcanic, and metavolcanic rocks assigned to the Fort Jones, North Fork, Hayfork, and Rattlesnake Creek terranes of Irwin (1994). Includes abundant melange |
| Stratigraphic units | Stuart Fork Fm., Hayfork Bally Meta-andesite |
| 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.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.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 Blake, M.C., Jr., Harwood, D.S., Helley, E.J., Irwin, W.P., Jayko, A.S., and Jones, D.L., 1999, Geologic map of the Red Bluff 30' x 60' quadrangle, California: U.S. Geological Survey Geologic Investigations Series Map I-2542, 15 p., scale 1:100,000.https://pubs.er.usgs.gov/publication/i2542 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 Irwin, W.P., 1981, Tectonic accretion of the Klamath Mountains, in Ernst, W.G., ed., The geotectonic development of California (Rubey Volume 1): Englewood Cliffs, N.J., Prentice-Hall, p. 29-49.Irwin, W.P., 1977, Review of Paleozoic rocks of the Klamath Mountains, 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. 441-454. |
| NGMDB product | |
| Counties | Del Norte - Humboldt - Shasta - Siskiyou - Tehama - Trinity |