Down in California, the San Andreas Fault marks the boundary where the North American and Pacific plates are sliding past ...

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

Two of the biggest fault lines in the world are synched together in a way that could lead to disastrous consequences, ...

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

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

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

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

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

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

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

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

Thursday’s 3.1 magnitude earthquake was the latest of five notable aftershocks to hit Berkeley since a 4.3 magnitude ...