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

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

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

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

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

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

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

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

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

Scientists at Oregon State University say there's new evidence that two of the best-known earthquake fault lines on the West ...

Millions of residents, students and office workers in Los Angeles and Orange counties and across the state will "drop, cover ...

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 ...