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

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

OSU researchers find Cascadia Subduction Zone and San Andreas Fault may be synchronized — with the potential for quakes on ...

Geologic clues reveal a hidden link between two major faults. A Cascadia quake might set the San Andreas in motion soon after ...

With the Great ShakeOut earthquake drill approaching, new research suggests a potential link between two major fault lines ...

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

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

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

A mega-earthquake might be triggered by two volatile faults, striking in unison, with one quake nudging the other into ...

The one-minute drill was developed to teach people what to do when a large temblor strikes. If you have the MyShake app, your ...

A major earthquake hasn't struck any of California's biggest cities in more than three decades, but the "Big One" is a matter ...