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The primary tectonic feature in California is the strike-slip San Andreas (SAF) system of faults that form part of the diffuse Pacific–North American plate boundary. This transform fault trends south-southeast through much of northern and central California, but turns more southeasterly at the southern end of the California Coast Ranges at a prominent restraining bend.
The Cabrillo Formation is a Maastrichtian stage geologic formation in coastal San Diego County, southern California. It is part of the Rosario Group . [ 2 ] The Maastrichtian stage is of the Late Cretaceous Epoch , during the Mesozoic Era .
The probability of a serious earthquake on various faults has been estimated in the 2008 Uniform California Earthquake Rupture Forecast. According to the United States Geological Survey, Southern California experiences nearly 10,000 earthquakes every year. [3] Details on specific faults can be found in the USGS Quaternary Fault and Fold Database.
The fault is linked to the Newport–Inglewood Fault (NIFZ) in the north and either the Agua Blanca Fault or San Miguel–Vallecitos Fault Zone in the south via en echelon stepovers. Conservative estimates of the fault place the length around 30–50 km (19–31 mi), while interpretations including the NIFZ place the length at 170 km (110 mi).
The Newport–Inglewood-Rose Canyon Fault Zone. The Newport–Inglewood Fault is a right-lateral strike-slip fault [1] in Southern California.The fault extends for 47 mi (76 km) [1] (110 miles if the Rose Canyon segment is included) from Culver City southeast through Inglewood and other coastal communities to Newport Beach at which point the fault extends east-southeast into the Pacific Ocean.
Seismic Hazards Mapping Act; California State Legislature; Full name: An act to amend Sections 2621.9 and 2622 of, to amend, repeal, and add Sections 2705 and 2706 of, and to add Chapter 7.8 (commencing within Section 2690) to Division 2 of, the Public Resources Code, relating to seismic safety, and making an appropriation therefor.
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South of this tectonic block, they join together, and this forms the San Diego Trough Fault Zone. [7] The next segment of fault runs narrow and straight for a distance of 100–150 km (62–93 mi) while roughly parallel to the coast. [7] The fault zone continues south before merging with the Bahía Soledad fault off the coast of Baja California ...