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Plaque showing location of San Andreas Fault in San Mateo County. The San Andreas Fault is a continental right-lateral strike-slip transform fault that extends roughly 1,200 kilometers (750 mi) through the U.S. state of California. [1] It forms part of the tectonic boundary between the Pacific plate and the North American plate. Traditionally ...
Scientists estimate that this section of fault—over the past 1,000 years—usually triggered a sizable earthquake every 180 years (give or take 40). But the southern San Andreas Fault (SSAF ...
Niland Geyser (nicknamed the "Slow One" [2] and formally designated W9) [3] is a moving mud pot or mud spring outside Niland, California in the Salton Trough in an area of geological instability due to the San Andreas Fault, [4] formed due to carbon dioxide being released underground.
The Imperial Fault is linked to the San Andreas Fault through the Brawley seismic zone, which is a spreading center beneath the southern end of the Salton Sea. With the San Jacinto Fault Zone to the northwest, the Elsinore fault to the south-southwest, and the Imperial fault centered directly under the Imperial Valley, the area frequently ...
Scientists believe they may have found a reason why the San Andreas Fault, the largest seismic hazard in California, has been dormant for more than three centuries.. The average timespan between ...
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 ...
On October 17, 1989, at 5:04 p.m. local time, the Loma Prieta earthquake occurred at the Central Coast of California. The shock was centered in The Forest of Nisene Marks State Park in Santa Cruz County, approximately 10 mi (16 km) northeast of Santa Cruz on a section of the San Andreas Fault System and was named for the nearby Loma Prieta Peak in the Santa Cruz Mountains.
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.