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Miocene marine rocks and Franciscan schist

State California
Name Miocene marine rocks and Franciscan schist
Geologic age Cretaceous(?) to Miocene
Comments Small outcrop area at east end of Santa Catalina Island. Shown as Franciscan on Long Beach sheet of Geologic Atlas of California, but later shown to be Cretaceous(?) to Miocene(?) sedimentary rocks intruded by Miocene dacitic and gabbroic rocks
Primary rock type siltstone
Secondary rock type sandstone
Other rock types mudstone; sedimentary breccia; conglomerate; dacite; gabbroid
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., 1962, Geologic map of California, Olaf P. Jenkins edition, Long Beach sheet, scale 1:250,000.
Rowland, S.M., 1984, Geology of Santa Catalina Island: California Geology, v. 37, no. 11, p. 239-251.
Vedder, J.G., Howell, D.G., and Forman, J.A., 1979, Miocene strata and their relation to other rocks, Santa Catalina Island, California, in Armentrout, J.M., Cole, M.R., and TerBest, L., Jr., eds., Cenozoic paleogeography of the western United States: Society of Economic Paleontologists and Mineralogists, Pacific Section, Pacific Coast Paleogeography Symposium 3, p. 239-256.
Counties Los Angeles