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Schist of various types and ages, unit 3 (Santa Cruz Island)

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Schists of various types; mostly Paleozoic or Mesozoic age; some Precambrian.
State California
Name Schist of various types and ages, unit 3 (Santa Cruz Island)
Geologic age Jurassic
Lithologic constituents
Major
Metamorphic > Schist (Greenschist)Includes both metasedimentary and metavolcanic rocks
Metamorphic > Metaigneous > Metavolcanic (Greenschist)Massive to schistose; compositions include keratophyre, quartz keratophyre, and spilite
Incidental
Sedimentary > Clastic > Sandstone (Bed)Weakly metamorphosed
Igneous > Plutonic > Granitic > TonaliteWeakly metamorphosed
Sedimentary > Chemical > Chert (Bed)Weakly metamorphosed
Igneous > Plutonic > Dioritic > DioriteWeakly metamorphosed
Comments Santa Cruz Island. Mostly massive to schistose metavolcanic rocks; minor metasedimentary schist
Stratigraphic units Santa Cruz Island Schist
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.

Jennings, C.W., 1962, Geologic map of California, Olaf P. Jenkins edition, Long Beach 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.

Sorenson, S., 1988, Tectonometamorphic significance of the basement rocks of the Los Angeles basin and the inner California continental borderland, in Ernst, W.G., ed., Metamorphism and crustal evolution of the western United States (Rubey Volume 7): Englewood Cliffs, N.J., Prentice-Hall, p. 998-1022.

Hill, D.J., 1976, Geology of the Jurassic basement rocks, Santa Cruz Island, California, and correlation with other Mesozoic basement terranes in California, in Howell, D.G., ed., Aspects of the geologic history of the California continental borderland: American Association of Petroleum Geologists, Pacific Section, Miscellaneous Publication 24, p. 16-46.
NGMDB product
Counties Santa Barbara