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

A new geological study suggests that a major earthquake in the Cascadia Subduction Zone could set off simultaneous shaking ...

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

A megaquake in the Pacific Northwest could trigger a large earthquake along California's San Andreas Fault, creating an ...

Scientists from Oregon State University studying sediment layers in the Pacific Ocean have discovered that two of the most ...

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. “It would be a very ...

When the tectonic subduction zone beneath the Pacific Northwest moves, it does so in dramatic fashion. Not only is ground shaking from a magnitude 9+ earthquake incredibly destructive, the event ...

New research offers the theory that the San Andreas fault and the Cascadia subduction zone could produce devastating ...

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

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

LOS ANGELES — What could the next mega-earthquake on California’s notorious San Andreas fault look like? Would it be a repeat of 1857, when an earthquake estimated at magnitude 7.7 to 7.9 ruptured the ...