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

For generations, scientists believed that the West Coast’s two great earthquake engines — the Cascadia subduction zone and ...

The third game in Rockstar's 3D Grand Theft Auto trilogy, Grand Theft Auto: San Andreas, just turned 21 years old today.

Scientists are raising the alarm about a potential seismic catastrophe on the West Coast of North America. Recent studies ...

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 ...

One of the most dangerous faults in the United States, the Cascadia Subduction Zone, may be able to trigger an earthquake on the San Andreas Fault, a new study says. But some scientists want more ...

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

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 retired scientist with the USGS worries about the impact the government shutdown is having on the agency's earthquake ...

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 ...

An earthquake hits the San Francisco Bay Area on October 17, 1989, killing 67 people and causing more than $5 billion in damages. Though this was one of the most powerful and destructive earthquakes ...