Lower Cretaceous marine rocks (CAKl;0)

State	California
Name	Lower Cretaceous marine rocks
Geologic age	Early Cretaceous
Lithologic constituents	Major Sedimentary > Clastic > Mixed-clastic > Siltstone-mudstone (Bed) Minor Sedimentary > Clastic > Sandstone (Bed)Mostly fine to medium grained, thin to thick bedded Incidental Sedimentary > Clastic > Conglomerate (Bed)
Comments	Coast Ranges. Middle part of Great Valley Sequence. Thick, extensive sequences of shale, siltstone, sandstone, and conglomerate. Included in undivided Lower Cretaceous and Upper Jurassic rocks on many recent maps
Stratigraphic units	Espada Fm., Horsetown Fm. Marmolejo Fm., Ono Fm., Paskenta Fm., Rector Fm., Shasta Series, Toro Fm. Wisenor Fm., Great Valley Sequence (part), Stony Creek Fm. (part), Lodoga Fm., Budden Canyon Fm. (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. Smith, A.R., 1965, Geologic map of California, Olaf P. Jenkins edition, Bakersfield 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., 1962, Geologic map of California, Olaf P. Jenkins edition, Redding 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. 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., 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 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 Yerkes, R.F., and Campbell, R.H., 1997, Preliminary geologic map of the west half, Los Angeles 60' x 30' quadrangle: U.S. Geological Survey Open-File Report 97-483, scale 1:100,000. https://pubs.er.usgs.gov/publication/ofr97483 Tennyson, M.E., 1992, Preliminary geologic map of the Santa Maria 30' x 60' quadrangle, California: U.S. Geological Survey Open-File Report 92-189, 9 p., scale 1:100,000. https://pubs.er.usgs.gov/publication/ofr92189 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. https://pubs.er.usgs.gov/publication/ofr92271 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. https://pubs.er.usgs.gov/publication/mf2403 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. https://pubs.er.usgs.gov/publication/mf2402 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. https://pubs.er.usgs.gov/publication/mf2332 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. https://pubs.er.usgs.gov/publication/mf2337 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 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 Dibblee, T.W., Jr., 1973, Regional geologic map of San Andreas and related faults in Carrizo Plain, Temblor, Caliente, and La Panza Ranges and vicinity, California: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-757, scale 1:125,000. https://pubs.er.usgs.gov/publication/i757 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. https://pubs.er.usgs.gov/publication/mf2342 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. https://pubs.er.usgs.gov/publication/i487 Vedder, J.G., Dibblee, T.W., Jr., and Brown, R.D., Jr., 1973, Geologic map of the upper Mono Creek-Pine Mountain area, California, showing rock units and structures offset by the Big Pine fault: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-752, scale 1:48,000. https://pubs.er.usgs.gov/publication/i752 Ingersoll, R.V., Rich, E.I., and Dickinson, W.R., 1977, Field guide; Great Valley Sequence, Sacramento Valley; [Field trip no. 8]: Geological Society of America, Cordilleran Section, Guidebook for Field Trips, 73rd Annual Meeting, Sacramento, CA, April 5-7, 1977, 72 p. Hart, E.W., 1966, Mines and mineral resources of Monterey County, California: California Division of Mines and Geology, County Report 5, 142 p., scale 1:250,000.
NGMDB product	NGMDB product page for 96750
Counties	Colusa - Contra Costa - Fresno - Glenn - Kern - Kings - Lake - Marin - Mendocino - Merced - Monterey - Napa - San Benito - San Luis Obispo - Santa Barbara - Shasta - Solano - Sonoma - Stanislaus - Tehama - Trinity - Yolo

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.

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.

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.

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., 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 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

Yerkes, R.F., and Campbell, R.H., 1997, Preliminary geologic map of the west half, Los Angeles 60' x 30' quadrangle: U.S. Geological Survey Open-File Report 97-483, scale 1:100,000.

https://pubs.er.usgs.gov/publication/ofr97483

Tennyson, M.E., 1992, Preliminary geologic map of the Santa Maria 30' x 60' quadrangle, California: U.S. Geological Survey Open-File Report 92-189, 9 p., scale 1:100,000.

https://pubs.er.usgs.gov/publication/ofr92189

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.

https://pubs.er.usgs.gov/publication/ofr92271

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.

https://pubs.er.usgs.gov/publication/mf2403

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.

https://pubs.er.usgs.gov/publication/mf2402

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.

https://pubs.er.usgs.gov/publication/mf2332

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.

https://pubs.er.usgs.gov/publication/mf2337

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

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

Dibblee, T.W., Jr., 1973, Regional geologic map of San Andreas and related faults in Carrizo Plain, Temblor, Caliente, and La Panza Ranges and vicinity, California: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-757, scale 1:125,000.

https://pubs.er.usgs.gov/publication/i757

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.

https://pubs.er.usgs.gov/publication/mf2342

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.

https://pubs.er.usgs.gov/publication/i487

Vedder, J.G., Dibblee, T.W., Jr., and Brown, R.D., Jr., 1973, Geologic map of the upper Mono Creek-Pine Mountain area, California, showing rock units and structures offset by the Big Pine fault: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-752, scale 1:48,000.

https://pubs.er.usgs.gov/publication/i752

Ingersoll, R.V., Rich, E.I., and Dickinson, W.R., 1977, Field guide; Great Valley Sequence, Sacramento Valley; [Field trip no. 8]: Geological Society of America, Cordilleran Section, Guidebook for Field Trips, 73rd Annual Meeting, Sacramento, CA, April 5-7, 1977, 72 p.

Hart, E.W., 1966, Mines and mineral resources of Monterey County, California: California Division of Mines and Geology, County Report 5, 142 p., scale 1:250,000.