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

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

The relationship between the sites means an earthquake in one zone can trigger an earthquake in the other in a phenomenon ...

A Cascadia subduction zone earthquake is coming for the Pacific Northwest, and when it hits, scientists now believe, it could ...

The disaster caused by a predicted large earthquake in the Pacific Northwest could be compounded by shaking along the San Andreas fault in California, scientists warned.

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

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

When the tectonic subduction zone beneath the Pacific Northwest moves, it does so in dramatic fashion. Not only is ground ...

They are two of the West Coast's most destructive generators of huge quakes: the San Andreas fault and the Cascadia ...

Scientists compared sediment deposits created by underwater landslides from earthquakes within the Cascadia Subduction Zone ...

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

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