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Similar rock formations and patterns are found throughout Ventura County, in the Topatopa Mountains and Pine Mountains. Thick Pliocene marine rocks up to 14,000 feet (4,300 m) thick are found on the edges of the Santa Clara River Valley and parts of the San Fernando Valley, stretching to Fillmore. Major uplift was going on in Pleistocene, with ...
Pages in category "Rock formations of California" The following 49 pages are in this category, out of 49 total. This list may not reflect recent changes. A.
Vasquez Rocks Natural Area Park is a 932-acre (377-hectare) park located in the Sierra Pelona in northern Los Angeles County, California. It is known for its rock formations, the result of sedimentary layering and later seismic uplift. It is located near the town of Agua Dulce, between the cities of Santa Clarita and Palmdale.
The Great Valley Sequence of California is a 40,000-foot (12 km)-thick group of related geologic formations that are Late Jurassic through Cretaceous in age (150–65 Ma) on the geologic time scale. These sedimentary rocks were deposited during the late Mesozoic Era in an ancient seaway that corresponds roughly to the outline of the modern ...
The following is a partial list of rock formations in the United States, ... (San Francisco, California) Seal Rock (San Mateo County, California) Sears Rock; Stoney ...
The outcrops of the formation have a very large range, extending from Douglas County, Oregon to Santa Barbara County, California. [2] Franciscan-like formations may be as far south as Santa Catalina Island. The formation lends its name to the term describing high-pressure regional metamorphic facies, the Franciscan facies series. [3]
The formation crops out in the eponymous Vasquez Rocks, part of the Los Angeles Basin. [3] The formation was deposited in a series of minibasins between the San Gabriel and San Andreas Faults. [4] The Vasquez Formation unconformably overlies Triassic basement of the Mount Lowe intrusive series, and localized the Jurassic syenite occurring in ...
The Point Loma Formation was first described as the middle formation of the Rosario Group by Kennedy and Moore in 1971. Their description is that the lower half is composed of interbedded fine-grained, dusky yellow sandstone and olive-gray clay shale in ledgy graded beds about 20 cm thick, which grades into massive grayish-black siltstone in the top half of the formation.