Alluvium, lake, playa, and terrace deposits; unconsolidated and semi-consolidated. Mostly nonmarine, but includes marine deposits near the coast.
Pliocene and/or Pleistocene sandstone, shale, and gravel deposits; in part Miocene.
Melange of fragmented and sheared Franciscan complex rocks.
Upper Cretaceous sandstone, shale, and conglomerate
Older alluvium, lake, playa, and terrace deposits.
Sandstone, shale, conglomerate, and fanglomerate; in part Pliocene and Oligocene.
Franciscan complex: Cretaceous and Jurassic sandstone with smaller amounts of shale, chert, limestone, and conglomerate. Includes Franciscan melange, except where separated--see KJfm.
Sandstone, shale, siltstone, conglomerate and breccia; in part Pliocene and Oligocene.
Shale, sandstone, conglomerate, and minor limestone; in part Oligocene and Paleocene.
Sandstone, shale, and conglomerate; mostly well consolidated