Tertiary intrusive rocks (hypabyssal), unit 5 (Southern California Basin)

Tertiary intrusive rocks; mostly shallow (hypabyssal) plugs and dikes. Includes some Mesozoic rocks.
State California
Name Tertiary intrusive rocks (hypabyssal), unit 5 (Southern California Basin)
Geologic age Tertiary
Lithologic constituents
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basalt (Pluton, Dike or sill)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-andesite (Pluton, Dike or sill)
Igneous > Hypabyssal > Mafic-hypabyssal > Hypabyssal-basaltic-andesite (Pluton)
Igneous > Hypabyssal > Felsic-hypabyssal > Hypabyssal-dacite (Pluton)

Stanley, R.G., Wilson, D.S., and McCrory, P.A., 2000, Locations and ages of middle Tertiary volcanic centers in coastal California: U.S. Geological Survey Open-File Report 00-154, 27 p., url http://geopubs.wr.usgs.gov/open-file/of00-154/


Weigand, P.W., 1982, Middle Cenozoic volcanism of the western Transverse Ranges, in Fife, D. L., and Minch, J. A., eds., Geology and mineral wealth of the California Transverse Ranges: Santa Ana, California, South Coast Geological Society, Inc., p. 170-188.

Weigand, P.W., 1993, Geochemistry and origin of middle Miocene volcanic rocks from Santa Cruz and Anacapa Islands, southern California Borderland, in Hochberg, F. G., ed., Recent advances in California island research: Santa Barbara Museum of Natural History, p. 21-37.

Weigand, P.W., and Savage, K.L., 1993, Review of the petrology and geochemistry of the Miocene Conejo Volcanics of the Santa Monica Mountains, California, in Weigand, P. W., Fritsche, A. E., and Davis, G. E., eds., Miocene sedimentary and volcanic environments, Santa Monica Mountains, California: SEPM (Society for Sedimentary Geology), Pacific Section, Book 72, p. 93-112.

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.

NGMDB product
Counties Los Angeles - Orange - Santa Barbara - Ventura