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

A new scientific warning has put California’s earthquake risk in sharp focus: supershear earthquakes—rare, high-speed ...

They remind the public to stay aware of symptoms and prevention measures even as we head into the cold and flu season.

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

A Cascadia subduction zone earthquake is coming for the Pacific Northwest, and when it hits, scientists now believe, it could cause the San Andreas fault in California to go off.

A specific type of earthquake that can cause particularly intense shaking is more common than previously believed, some ...

San Andreas, Cascadia faults could combine to produce back-to-back earthquake disasters, new research suggests – Nation and ...

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

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

A massive Pacific Northwest earthquake could trigger a devastating second quake on California's San Andreas Fault, a new ...

An earthquake struck near the High Desert community of Pearblossom, and along the San Andreas Fault. The magnitude 3.3 quake struck at 10:49 p.m. on Monday, Sept. 8, four miles south of Pearblossom in ...

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 ...