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The San Jacinto Fault Zone and the San Andreas Fault (SAF) accommodate up to 80% of the slip rate between the North American and Pacific plates.The extreme southern portion of the SAF has experienced two moderate events in historical times, while the SJFZ is one of California's most active fault zones and has repeatedly produced both moderate and large events.
The SJFZ is a complex, highly segmented, and overlapped fault zone that runs parallel to the San Andreas Fault, [7] but separated by the San Jacinto Mountains. [2] It is located on the eastern Salton Trough, and runs 290 km (180 mi) directly beneath the cities of San Bernardino, Colton, San Jacinto and Hemet. [2]
Simplified fault map of southern California The faults of Southern California viewed to the southeast, as modeled by the Southern California Earthquake Center. Highlighted in purple are the San Andreas Fault (left) and Santa Monica Bay complex (right). The foreground is in the Santa Barbara Channel, the east-trending zone marks the Transverse ...
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A full fault rupture, estimated to be around a 7.5 magnitude, could kill between 3,000 and 18,000 people, according to US Geological Survey and Southern California Earthquake Center.
A simulation of a plausible major southern San Andreas fault earthquake — a magnitude 7.8 that begins near the Mexican border along the fault plane and unzips all the way to L.A. County's ...
It cuts under cities including Hemet, Colton, and San Bernardino along the way, before joining the San Andreas Fault at Devore. Because the fault is so segmented, some branches have their own names, although they are considered part of the system of faults. The San Jacinto Fault is thought to be the most active fault in California. It is the ...
Below the San Jacinto Basin, the Perris Plain is bounded on the south by the Plains of Leon, which continues the plains of the Perris Block and by the mountains of the southern Perris Block. Plains and Valleys of the Perris Block within the San Jacinto Basin: Perris Plain Menifee Valley; Moreno Valley; Paloma Valley; Perris Valley; San Jacinto ...