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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 has the potential of triggering a 6.5-magnitude earthquake. [4] Because the Richter scale is logarithmic, Diablo Canyon is designed to withstand an earthquake of shaking amplitude ten times larger than that which the Shoreline fault is capable of triggering, based on an analysis by plant owner Pacific Gas & Electric (PG&E).
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 ...
The Imperial fault was the source of the 1940 El Centro earthquake and the 1979 Imperial Valley earthquake. There was more than 30 km (19 mi) of surface rupture associated with the 1979 event along the northwest trending Imperial fault from just north of the Mexico–United States border to an area south of Brawley and the BSZ was found to have ...
The fault models (FM 3.1 and 3.2) describe the physical geometry of the larger and more active faults. Deformation models determine the slip rates and related factors for each fault section, how much strain accumulates before a fault ruptures, and how much energy is then released. Four deformation models are used, reflecting different ...
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.
The Perris Block is the central block of three major fault-bounded blocks of the northern part of the Peninsular Ranges. The Perris Block lies between the Santa Ana Block to the west and the San Jacinto Block to the east. [1] The Perris Block, was named by Walter A. English in 1925 for the city of Perris, located near the center of the block. [2]