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Franciscan Complex, unit 1 (Coast Ranges)

Franciscan complex: Cretaceous and Jurassic sandstone with smaller amounts of shale, chert, limestone, and conglomerate. Includes Franciscan melange, except where separated--see KJfm.
StateCalifornia
NameFranciscan Complex, unit 1 (Coast Ranges)
Geologic ageJurassic to Cretaceous
Original map labelKJf
CommentsCoast Ranges. Primarily Yolla Bolly, Central, and San Simeon terranes of Silberling et al. ( 1987). Consists primarily of variably deformed and metamorphosed graywacke, mudstone, and chert.
Primary rock typesandstone
Secondary rock typemudstone
Other rock typeschert; limestone; conglomerate; greenstone; serpentinite; gabbro; amphibolite; schist; felsic volcanic rock
Lithologic constituents
Map references
Jennings, C.W., Strand, R.G., and Rogers, T.H., 1977, Geologic map of California: California Division of Mines and Geology, scale 1:750,000.
Unit references
Jennings, C.W., Strand, R.G., and Rogers, T.H., 1977, Geologic map of California: California Division of Mines and Geology, 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.
Jennings, C.W., and Strand, R.G., 1969, Geologic map of California, Olaf P. Jenkins edition, Los Angeles sheet, scale 1:250,000.
Strand, R.G., 1962, Geologic map of California, Olaf P. Jenkins edition, Redding sheet, scale 1:250,000.
Jennings, C.W., and Burnett, J.L., 1961, Geologic map of California, Olaf P. Jenkins edition, San Francisco sheet, scale 1:250,000.
Rogers, T.H., 1966, Geologic map of California, Olaf P. Jenkins edition, San Jose sheet, scale 1:250,000.
Jennings, C.W., 1959, Geologic map of California, Olaf P. Jenkins edition, San Luis Obispo sheet, scale 1:250,000.
Jennings, C.W., and Strand, R.G., 1959, Geologic map of California, Olaf P. Jenkins edition, Santa Cruz sheet, scale 1:250,000.
Jennings, C.W., 1959, Geologic map of California, Olaf P. Jenkins edition, Santa Maria sheet, scale 1:250,000.
Koenig, J.B., 1963, Geologic map of California, Olaf P. Jenkins edition, Santa Rosa sheet, scale 1:250,000.
Jennings, C.W., and Strand, R.G., 1960, Geologic map of California, Olaf P. Jenkins edition, Ukiah 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., Bortugno, E.J., and McJunkin, R.D., 1990, Geologic map of the San Francisco-San Jose quadrangle, California: California Division of Mines and Geology, Regional Geologic Map Series, Map 5A, 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.
Wagner, D.L., and Bortugno, E.J., 1982, Geologic map of the Santa Rosa quadrangle, California: California Division of Mines and Geology, Regional Geologic Map Series, Map 2A, 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.
Blake, M.C., Jr., Helley, E.J., Jayko, A.S., Jones, D.L., and Ohlin, H.N., 1992, Geologic map of the Willows 1:100,000 quadrangle, California: U.S. Geological Survey Open-File Report 92-271, 42 p., scale 1:100,000.
Graymer, R.W., Jones, D.L., and Brabb, E.E., 2002, Geologic map and map database of northeastern San Francisco Bay region, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2403, 28 p., scale 1:100,000.
Blake, M.C., Jr., Graymer, R.W., and Stamski, R.E., 2002, Geologic map and map database of western Sonoma, northernmost Marin, and southernmost Mendocino Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2402, 43 p., scale 1:100,000.
Jayko, A.S., Blake, M.C., Jr., McLaughlin, R.J., Ohlin, H.N., Ellen, S.D., and Kelsey, Harvey, 1989, Reconnaissance geologic map of the Covelo 30- by 60-minute quadrangle, northern California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2001, scale 1:100,000.
Brabb, E.E., Graymer, R.W., and Jones, D.L., 2000, Geologic map and map database of the Palo Alto 30' x 60' quadrangle, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2332, 30 p., scale 1:100,000.
Blake, M.C., Jr., Graymer, R.W., and Jones, D.L., 2000, Geologic map and map database of parts of Marin, San Francisco, Alameda, Contra Costa, and Sonoma Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map MF 2337, 29 p., scale 1:75,000.
McLaughlin, R.J., Ellen, S.D., Blake, M.C., Jr., Jayko, A.S., Irwin, W.P., Aalto, K.R., Carver, G.A., and Clarke, S.H., Jr., 2000, Geology of the Cape Mendocino, Eureka, Garberville, and southwestern part of the Hayfork 30 x 60 minute quadrangles and adjacent offshore area, northern California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2336, 30 p., scale 1:100,000.
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.
Graymer, R.W., 2000, Geologic map and map database of the Oakland metropolitan area, Alameda, Contra Costa, and San Francisco Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-2342, 29 p., scale 1:50,000.
Vedder, J.G., Gower, H.D., Clifton, H.E., and Durham, D.L., 1967, Reconnaissance geologic map of the central San Rafael Mountains and vicinity, Santa Barbara County, California: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-487, scale 1:48,000.
Cotton, W.R., 1972, Preliminary geologic map of the Franciscan rocks in the central part of the Diablo Range, Santa Clara and Alameda Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map MF-343, scale 1:62,500.
Blake, M.C., Jr., and Jones, D.L., 1981, The Franciscan Assemblage and related rocks in northern California: a reinterpretation, in Ernst, W.G., ed., The geotectonic development of California (Rubey Volume 1): Englewood Cliffs, N.J., Prentice-Hall, p. 307-328.
Page, B.M., 1981, The southern Coast Ranges, in Ernst, W.G., ed., The geotectonic development of California (Rubey Volume 1): Englewood Cliffs, N.J., Prentice-Hall, p. 329-417.
Blake, M.C., Jr., Jayko, A.S., McLaughlin, R.J., and Underwood, M.B., 1988, Metamorphic and tectonic evolution of the Franciscan Complex, northern California, in Ernst, W.G., ed., Metamorphism and crustal evolution of the western United States (Rubey Volume 7): Englewood Cliffs, N.J., Prentice-Hall, p. 1035-1060.
Blake, M.C., Jr., and others, 1985, C-1 Mendocino triple junction to North American craton: Geological Society of America Centennial Continent/Ocean Transect 12, 30 p., scale 1:500,000.
Suppe, John, 1978, Cross section of southern part of northern Coast Ranges and Sacramento Valley, California: Geological Society of America Map and Chart Series, MC-28B, 8 p., scale 1:250,000.
Irwin, Porter, and Dennis, M.D., 1978, Geologic structure section across southern Klamath Mountains, Coast Ranges, and seaward to Point Delgada, California: Geological Society of America Map and Chart Series, MC-28D, scale 1:250,000.
Page, B.M., Wagner, H.C., McCulloch, D.S., Silver, E.A., and Spotts, J.H., 1978, Geologic cross section of the continental margin off San Luis Obispo, the southern Coast Ranges, and the San Joaquin Valley, California: Geological Society of America Map and Chart Series, MC-28G, 12 p., scale 1:250,000.
Ross, D.C., and McCulloch, D.S., 1979, Cross section of the southern Coast Ranges and San Joaquin Valley from offshore Point Sur to Madera, California: Geological Society of America Map and Chart Series, MC-28H, 4 p., scale 1:250,000.
Maxwell, J.C., Etter, S.D., Fritz, D.M., Gucwa, P.R., Jordan, M.A., Kleist, J.R., Lehman, D.H., Raney, J.A., and Worrall, D.M., 1981, Geologic cross sections, northern California coast ranges to northern Sierra Nevada, and Lake Pillsbury area to southern Klamath Mountains: Geological Society of America Map and Chart Series, MC-28N, 8 p., scale 1:250,000.
Geographic coverageAlameda - Colusa - Contra Costa - Del Norte - Fresno - Glenn - Humboldt - Kern - Lake - Marin - Mendocino - Merced - Monterey - Napa - San Benito - San Francisco - San Joaquin - San Luis Obispo - San Mateo - Santa Barbara - Santa Clara - Solano - Sonoma - Stanislaus - Tehama - Trinity - Yolo

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