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

Supershear earthquakes are more common than previously believed, some scientists say — carrying potentially profound risk for ...

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

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

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 ...

The West Coast of North America is a geologically tumultuous zone where tectonic plates collide, subducting under and ...

A big earthquake on the Hayward Fault could cause damage similar to deadly 1989 Loma Prieta quake, experts say. Thursday’s ...

In the Bay Area, BART plans to automatically slow down its trains and have them come to a brief stop, as the system is ...

Although Californians are relatively familiar with the San Andreas Fault, the Cascadia Subduction Zone is in many ways more ...