Sandstone, siltstone, shale, and conglomerate; in part Pleistocene and Miocene.
Sandstone, shale, siltstone, conglomerate and breccia; in part Pliocene and Oligocene.
Alluvium, lake, playa, and terrace deposits; unconsolidated and semi-consolidated. Mostly nonmarine, but includes marine deposits near the coast.
Shale, sandstone, conglomerate, and minor limestone; in part Oligocene and Paleocene.
Older alluvium, lake, playa, and terrace deposits.
Franciscan complex: Cretaceous and Jurassic sandstone with smaller amounts of shale, chert, limestone, and conglomerate. Includes Franciscan melange, except where separated--see KJfm.
Mesozoic granite, quartz monzonite, granodiorite, and quartz diorite
Melange of fragmented and sheared Franciscan complex rocks.
Upper Cretaceous sandstone, shale, and conglomerate
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.
Tertiary volcanic flow rocks; minor pyroclastic deposits.
Sandstone, shale, and conglomerate; in part Miocene and Eocene.
Pliocene and/or Pleistocene sandstone, shale, and gravel deposits; in part Miocene.
Ultramafic rocks, mostly serpentine. Minor peridotite, gabbro, and diabase. Chiefly Mesozoic unit 3
Sandstone, shale, and conglomerate; mostly well consolidated
Extensive marine and nonmarine sand deposits, generally near the coast or desert playas