Tectonically controlled fan delta and submarine fan sedimentation of late Miocene age, southern Temblor Range, California

Evaluation of hypotheses for right-lateral displacement of Neogene strata along the San Andreas Fault between Parkfield and Maricopa, California

“…In the Maricopa area and throughout much of central California, the Monterey Formation is unconformably overlain by the upper Miocene Santa Margarita Formation (Ryder and Thomson, 1989). On the west side of the Temblor Range, the Santa Margarita Formation is about 500 m thick (Ryder and Thomson, 1989, p. 54) and consists mostly of conglomerate and sandstone thought to have been derived from granitic, metamorphic, and volcanic rocks located west of the San Andreas Fault in the Gabilan Range, now displaced to the northwest by right-lateral slip along the San Andreas Fault (Huffman, 1972).…”

“…In this area, the Monterey Formation ranges in thickness from 450 to 2,700 m or more and consists mainly of marine siliceous shale and mudstone with interbeds of fine-grained sandstone (Ryder and Thomson, 1989). At locality 10C153A in the southeastern Temblor Range ( fig.…”

“…1) Ryder and Thomson (1989) and Dibblee (2005b,g), showing diatom sample localities and ages inferred from diatom biostratigraphy.…”

“…2). The Tertiary strata are deformed by northwest-striking folds that locally are overturned and cut by northwest-striking normal and reverse faults (Ryder and Thomson, 1989).…”

“…In the Maricopa area on the northeast side of the San Andreas Fault ( fig. 2), geologic maps by Dibblee (2005a,b,c,g), Ryder andThomson (1989), andVedder (1970) show that the "Pliocene marine sands" at locality A ( fig. 1) correspond to the upper Miocene Panorama Hills formation of Dibblee (1962), whereas the "Pliocene(?)…”