For generations, scientists believed that the West Coast’s two great earthquake engines — the Cascadia subduction zone and ...

Accidental landing of a research vessel in the San Andreas zone revealed the repeating patterns tribuldite in its core.

Two earthquakes struck off the Oregon coast today. Learn more about their impact and how to stay prepared for future tremors.

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

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

A specific type of earthquake that can cause particularly intense shaking is more common than previously believed, some ...

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

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 ...

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.

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

One of the most dangerous faults in the United States, the Cascadia Subduction Zone, may be able to trigger an earthquake on the San Andreas Fault, a new study says. But some scientists want more ...

LONG BEACH, Calif. (KABC) -- During an earthquake study conference in Long Beach, a local expert said California's infamous San Andreas fault is due for a massive ...