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Geologic Atlas of California - San Luis Obispo Sheet



Geologic Atlas of California - San Luis Obispo Sheet


California Geological Survey, Geologic Atlas of California Map No. 018, 1:250,000 scale

Compilation by: Charles W. Jennings

1958

DESCRIPTION OF MAP UNITS

Dune sand
Alluvium
Fan deposits
River terrace deposits
Pleistocene marine and marine terrace deposits
Pleistocene nonmarine
Plio-Pleistocene nonmarine
Undivided Pliocene nonmarine
Upper Pliocene marine
Middle and/or lower Pliocene marine
Undivided Miocene nonmarine
Upper Miocene marine
Middle Miocene marine
Lower Miocene marine
Miocene volcanic rocks
Mvr-rhyolite
Mva-andesite
Mvb-basalt
Mvp-pyroclastic rocks 
Oligocene nonmarine
Eocene marine
Paleocene marine
Tertiary intrusive (hypabyssal) rocks
Tir-rhyolite
Tia-andesite
Tib-basalt
Undivided Cretaceous marine
Upper Cretaceous marine
Lower Cretaceous marine
Franciscan group
Franciscan volcanic and metavolcanic rocks
Knoxville formation
Mesozoic granitic rocks 
Mesozoic basic intrusive rocks
Mesozoic ultrabasic intrusive rocks
Pre-Cretaceous metamorphic rocks (ls=limestone)

Click here for the Index to Geologic Mapping in California.

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