Accidental landing of a research vessel in the San Andreas zone revealed the repeating patterns tribuldite in its core.

A future mega-earthquake in the Pacific Northwest could lead to the “Big One” along the San Andreas fault in California—or ...

A newly identified link between two notorious geologic zones suggests a major earthquake at one site could trigger another ...

Although Californians are relatively familiar with the San Andreas Fault, the Cascadia Subduction Zone is in many ways more dangerous. That fault, where the Juan de Fuca Plate is subsiding underneath ...

A section of the San Andreas fault where earthquakes occur regularly may give off a distinct signal before it trembles to life, new research finds. The signal hints at the opening and closing of ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The southern section of California’s San Andreas fault hasn’t experienced a major earthquake in 300 years ...

These are two very different fault systems, but the sediment record suggests that in the past, at least three San Andreas ...

Enlarged microscope photo of sedimentary rock that was structurally altered during an earthquake. The slip layer (green portion) was heated during fault movement. The actual field of view is only ...

Samples from the seafloor reveal evidence of several earthquakes along the West Coast’s two major fault zones happening in ...

There have been around 27 2.5 magnitude or greater earthquakes along or near the San Andreas Fault in California within the last seven days, data from the U.S. Geological Survey (USGS) shows. The San ...

LOS ANGELES — What could the next mega-earthquake on California’s notorious San Andreas fault look like? Would it be a repeat of 1857, when an earthquake estimated at magnitude 7.7 to 7.9 ruptured the ...