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Molluscan Paleontology Of The Pliocene Peace Valley "Beds" And Ridge Route "Formation" (Ridge Basin Group), Ridge Basin, Southern California, Daniel R. Young
Molluscan Paleontology Of The Pliocene Peace Valley "Beds" And Ridge Route "Formation" (Ridge Basin Group), Ridge Basin, Southern California, Daniel R. Young
Theses and Dissertations
The Ridge Basin, 90 km northwest of Los Angeles, California, lies within the San Gabriel, San Andreas, Liebre, and Clearwater fault zones. The basin is an elongated, wedge-shaped, intermontane, Miocene-Pliocene basin filled with about 12 000 m of marine, lacustrine, fluvial, and alluvial sediment. More than half of the thickness of the Ridge Route "formation" and about one fifth of the Peace Valley "beds" was examined for molluscs along the northeastern side of the basin and more than 600 m of section were measured.
The nonmarine molluscs of the Ridge Route "formation" and Peace Valley "beds" consist of ten species: …