San Andreas Fault
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The San Andreas Fault is a continental right-lateral strike-slip transform fault that extends roughly 750 mi through the U.S. state of California. It forms part of the tectonic boundary between the Pa
The fault (right) and the Carrizo Plain (left)
Arrows show relative motion of the North American plate (southeastward) and the Pacific plate (northwestward)
Aerial photo of the San Andreas Fault in the Carrizo Plain
The Vasquez Rocks in Agua Dulce, California are evidence of the San Andreas Fault and part of the 2,650-mile Pacific Crest Trail.
Hayward Fault Zone
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The Hayward Fault Zone is a right-lateral strike-slip geologic fault zone capable of generating destructive earthquakes. The fault was first named in the Lawson Report of the 1906 San Francisco Earthq
Preferential groundwater flow along the fault emerges as a spring supporting the riparian vegetation in the center of this photo of Taylor Mountain Regional Park. The spring is the source of Cooper Creek which flows northward through a deeply incised canyon along the fault on the southern edge of Santa Rosa, California, to a confluence with Matanzas Creek at Doyle Community Park.
San Francisco Bay region earthquake probability
USGS satellite photo of the San Francisco Bay Area. Light gray areas are heavily urbanized regions.
The effects of 15 years of fault creep on a curb in Fremont