Alluvium, lake, playa, and terrace deposits; unconsolidated and semi-consolidated. Mostly nonmarine, but includes marine deposits near the coast.
Sandstone, shale, siltstone, conglomerate and breccia; in part Pliocene and Oligocene.
Older alluvium, lake, playa, and terrace deposits.
Shale, sandstone, minor conglomerate, chert, slate, limestone; minor pyroclastic rocks
Upper Cretaceous sandstone, shale, and conglomerate
Sandstone, shale, and conglomerate; in part Miocene and Eocene.
Shale, sandstone, conglomerate, and minor limestone; in part Oligocene and Paleocene.
Sandstone, siltstone, shale, and conglomerate; in part Pleistocene and Miocene.
Undivided Mesozoic volcanic and metavolcanic rocks. Andesite and rhyolite flow rocks, greenstone, volcanic breccia and other pyroclastic rocks; in part strongly metamorphosed. Includes volcanic rocks of Franciscan Complex: basaltic pillow lava, diabase, greenstone, and minor pyroclastic rocks.
Mesozoic granite, quartz monzonite, granodiorite, and quartz diorite
Sandstone, shale, and conglomerate; mostly well consolidated
Undivided Cretaceous sandstone, shale, and conglomerate; minor nonmarine rocks in Peninsular Ranges
Tertiary volcanic flow rocks; minor pyroclastic deposits.
Tertiary intrusive rocks; mostly shallow (hypabyssal) plugs and dikes. Includes some Mesozoic rocks.