Mesozoic gabbroic rocks, unit 2 (undivided) (CAgb2;0)

State	California
Name	Mesozoic gabbroic rocks, unit 2 (undivided)
Geologic age	Triassic to Cretaceous
Lithologic constituents	Major Igneous > Plutonic > Gabbroic > Gabbro (Pluton, Batholith)Mafic plutonic rocks in batholithic and ophiolitic environments Igneous > Plutonic > Dioritic > Diorite (Pluton, Batholith)Mafic plutonic rocks in batholithic and ophiolitic environments
Comments	Mostly small exposures of gabbro and diorite scattered in western Klamath Mts., Sierra Nevada, Coast Ranges, Mojave Desert, and Peninsular Ranges
Stratigraphic units	Cuyamaca Gabbro, Elk Creek Gabbro, Gold Park Gabbro-Diorite, San Marcos Gabbro, Summit Gabbro
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. Smith, A.R., 1965, Geologic map of California, Olaf P. Jenkins edition, Bakersfield sheet, scale 1:250,000. Burnett, J.L., and Jennings, C.W., 1962, Geologic map of California, Olaf P. Jenkins edition, Chico sheet, scale 1:250,000. Matthews, R.A., and Burnett, J.L., 1966, Geologic map of California, Olaf P. Jenkins edition, Fresno sheet, scale 1:250,000. 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., 1967, Geologic map of California, Olaf P. Jenkins edition, Mariposa sheet, scale 1:250,000. Bishop, C.C., 1964, Geologic map of California, Olaf P. Jenkins edition, Needles 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., and Koenig, J.B., 1966, Geologic map of California, Olaf P. Jenkins edition, Sacramento sheet, scale 1:250,000. Jennings, C.W., 1967, Geologic map of California, Olaf P. Jenkins edition, Salton Sea sheet, scale 1:250,000. Rogers, T.H., 1969, Geologic map of California, Olaf P. Jenkins edition, San Bernardino sheet, scale 1:250,000. Strand, R.G., 1962, Geologic map of California, Olaf P. Jenkins edition, San Diego-El Centro 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. Rogers, T.H., 1966, Geologic map of California, Olaf P. Jenkins edition, Santa Ana 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., Burnett, J.L., and Troxel, B.W., 1963, Geologic map of California, Olaf P. Jenkins edition, Trona sheet, scale 1:250,000. Koenig, J.B., 1963, Geologic map of California, Olaf P. Jenkins edition, Walker Lake sheet, scale 1:250,000. Strand, R.G., 1964, Geologic map of California, Olaf P. Jenkins edition, Weed 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. Wagner, D.L., Jennings, C.W., Bedrossian, T.L., and Bortugno, E.J., 1981, Geologic map of the Sacramento quadrangle, California: California Division of Mines and Geology, Regional Geologic Map Series, Map 1A, scale 1:250,000. Bortugno, E.J., and Spittler, T.E., 1986, Geologic map of the San Bernardino quadrangle, California: California Division of Mines and Geology, Regional Geologic Map Series, Map 3A, 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. https://pubs.er.usgs.gov/publication/ofr87257 Bateman, P.C., 1992, Pre-Tertiary geologic map of the Mariposa 1ø by 2ø quadrangle, Sierra Nevada, California: U.S. Geological Survey Miscellaneous Investigations Series Map I-1960, scale 1:250,000. https://pubs.er.usgs.gov/publication/i1960 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 Ross, D.C., 1995, Reconnaissance geologic map of the southern Sierra Nevada, Kern, Tulare, and Inyo Counties, California: U.S. Geological Survey Miscellaneous Investigations Series Map I-2295, scale 1:125,000. https://pubs.er.usgs.gov/publication/i2295 Ross, D.C., 1989, The metamorphic and plutonic rocks of the southernmost Sierra Nevada, California, and their tectonic framework: U.S. Geological Survey Professional Paper 1381, 159 p., scale 1:125,000. https://pubs.er.usgs.gov/publication/pp1381 Powell, R.E., 1993, Balanced palinspastic reconstruction of pre-late Cenozoic paleogeology, southern California: Geologic and kinematic constraints on evolution of the San Andreas fault system, in Powell, R.E., Weldon, R.J., II, and Matti, J.C., eds., The San Andreas fault system: Displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178, p. 1-106, scale 1:750,000. Morton, D.M., 1999, Preliminary digital geologic map of the Santa Ana 30' x 60' quadrangle, southern California: U.S. Geological Survey Open-File Report 99-172, scale 1:100,000. https://pubs.er.usgs.gov/publication/ofr99172 Huber, N.K., Bateman, P.C., and Wahrhaftig, Clyde, 1989, Geologic map of Yosemite National Park and vicinity, California: U.S. Geological Survey Miscellaneous Investigations Series Map I-1874, scale 1:125,000. https://pubs.er.usgs.gov/publication/i1874 Moore, J.G., and Sisson, T.W., 1987, Preliminary geologic map of Sequoia and Kings Canyon National Parks, California: U.S. Geological Survey Open-File Report 87-651, 17 p., scale 1:125,000. https://pubs.er.usgs.gov/publication/ofr87651 Weber, F.H., Jr., 1963, Geology and mineral resources of San Diego County, California: California Division of Mines and Geology, County Report 3, 309 p., scale 1:125,000. Hopson, C.A., Mattinson, J.M., and Pessagno, E.A., Jr., 1981, Coast Range Ophiolite, western California, in Ernst, W.G., ed., The geotectonic development of California (Rubey Volume 1): Englewood Cliffs, N.J., Prentice-Hall, p. 418-510. Saleeby, J.B., 1990, Geochronological and tectonostratigraphic framework of Sierra-Klamath ophiolitic assemblages, 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. 93-114. Saleeby, J.B., 1992, Petrotectonic and paleogeographic settings of U.S. Cordilleran ophiolites, in Burchfiel, B.C., Lipman, P.W., and Zoback, M.L., eds., The Cordilleran orogen: Conterminous U.S.:Boulder, Colorado, Geological Society of America, The Geology of North America, v. G-3, p. 653-681.
NGMDB product	NGMDB product page for 96750
Counties	Amador - Butte - Calaveras - Del Norte - El Dorado - Fresno - Inyo - Kern - Los Angeles - Madera - Mariposa - Mono - Monterey - Nevada - Placer - Plumas - Riverside - San Benito - San Bernardino - San Diego - Santa Cruz - Sierra - Siskiyou - Sonoma - Stanislaus - Tehama - Trinity - Tulare - Tuolumne - Yuba

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.

Smith, A.R., 1965, Geologic map of California, Olaf P. Jenkins edition, Bakersfield sheet, scale 1:250,000.

Burnett, J.L., and Jennings, C.W., 1962, Geologic map of California, Olaf P. Jenkins edition, Chico sheet, scale 1:250,000.

Matthews, R.A., and Burnett, J.L., 1966, Geologic map of California, Olaf P. Jenkins edition, Fresno sheet, scale 1:250,000.

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., 1967, Geologic map of California, Olaf P. Jenkins edition, Mariposa sheet, scale 1:250,000.

Bishop, C.C., 1964, Geologic map of California, Olaf P. Jenkins edition, Needles 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., and Koenig, J.B., 1966, Geologic map of California, Olaf P. Jenkins edition, Sacramento sheet, scale 1:250,000.

Jennings, C.W., 1967, Geologic map of California, Olaf P. Jenkins edition, Salton Sea sheet, scale 1:250,000.

Rogers, T.H., 1969, Geologic map of California, Olaf P. Jenkins edition, San Bernardino sheet, scale 1:250,000.

Strand, R.G., 1962, Geologic map of California, Olaf P. Jenkins edition, San Diego-El Centro 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.

Rogers, T.H., 1966, Geologic map of California, Olaf P. Jenkins edition, Santa Ana 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., Burnett, J.L., and Troxel, B.W., 1963, Geologic map of California, Olaf P. Jenkins edition, Trona sheet, scale 1:250,000.

Koenig, J.B., 1963, Geologic map of California, Olaf P. Jenkins edition, Walker Lake sheet, scale 1:250,000.

Strand, R.G., 1964, Geologic map of California, Olaf P. Jenkins edition, Weed 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.

Wagner, D.L., Jennings, C.W., Bedrossian, T.L., and Bortugno, E.J., 1981, Geologic map of the Sacramento quadrangle, California: California Division of Mines and Geology, Regional Geologic Map Series, Map 1A, scale 1:250,000.

Bortugno, E.J., and Spittler, T.E., 1986, Geologic map of the San Bernardino quadrangle, California: California Division of Mines and Geology, Regional Geologic Map Series, Map 3A, 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.

https://pubs.er.usgs.gov/publication/ofr87257

Bateman, P.C., 1992, Pre-Tertiary geologic map of the Mariposa 1ø by 2ø quadrangle, Sierra Nevada, California: U.S. Geological Survey Miscellaneous Investigations Series Map I-1960, scale 1:250,000.

https://pubs.er.usgs.gov/publication/i1960

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

Ross, D.C., 1995, Reconnaissance geologic map of the southern Sierra Nevada, Kern, Tulare, and Inyo Counties, California: U.S. Geological Survey Miscellaneous Investigations Series Map I-2295, scale 1:125,000.

https://pubs.er.usgs.gov/publication/i2295

Ross, D.C., 1989, The metamorphic and plutonic rocks of the southernmost Sierra Nevada, California, and their tectonic framework: U.S. Geological Survey Professional Paper 1381, 159 p., scale 1:125,000.

https://pubs.er.usgs.gov/publication/pp1381

Powell, R.E., 1993, Balanced palinspastic reconstruction of pre-late Cenozoic paleogeology, southern California: Geologic and kinematic constraints on evolution of the San Andreas fault system, in Powell, R.E., Weldon, R.J., II, and Matti, J.C., eds., The San Andreas fault system: Displacement, palinspastic reconstruction, and geologic evolution: Geological Society of America Memoir 178, p. 1-106, scale 1:750,000.

Morton, D.M., 1999, Preliminary digital geologic map of the Santa Ana 30' x 60' quadrangle, southern California: U.S. Geological Survey Open-File Report 99-172, scale 1:100,000.

https://pubs.er.usgs.gov/publication/ofr99172

Huber, N.K., Bateman, P.C., and Wahrhaftig, Clyde, 1989, Geologic map of Yosemite National Park and vicinity, California: U.S. Geological Survey Miscellaneous Investigations Series Map I-1874, scale 1:125,000.

https://pubs.er.usgs.gov/publication/i1874

Moore, J.G., and Sisson, T.W., 1987, Preliminary geologic map of Sequoia and Kings Canyon National Parks, California: U.S. Geological Survey Open-File Report 87-651, 17 p., scale 1:125,000.

https://pubs.er.usgs.gov/publication/ofr87651

Weber, F.H., Jr., 1963, Geology and mineral resources of San Diego County, California: California Division of Mines and Geology, County Report 3, 309 p., scale 1:125,000.

Hopson, C.A., Mattinson, J.M., and Pessagno, E.A., Jr., 1981, Coast Range Ophiolite, western California, in Ernst, W.G., ed., The geotectonic development of California (Rubey Volume 1): Englewood Cliffs, N.J., Prentice-Hall, p. 418-510.

Saleeby, J.B., 1990, Geochronological and tectonostratigraphic framework of Sierra-Klamath ophiolitic assemblages, 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. 93-114.

Saleeby, J.B., 1992, Petrotectonic and paleogeographic settings of U.S. Cordilleran ophiolites, in Burchfiel, B.C., Lipman, P.W., and Zoback, M.L., eds., The Cordilleran orogen: Conterminous U.S.:Boulder, Colorado, Geological Society of America, The Geology of North America, v. G-3, p. 653-681.