One of the most dangerous faults in the United States, the Cascadia Subduction Zone, may be able to trigger an earthquake on ...

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

A massive Pacific Northwest earthquake could trigger a devastating second quake on California's San Andreas Fault, a new ...

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

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

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

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

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 ...

Scientists have uncovered evidence that megaquakes in the Pacific Northwest might trigger California’s San Andreas Fault. A research ship’s navigational error revealed paired sediment layers showing ...

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

A new study found that if “The Big One" hit the Pacific Northwest, it could trigger an even bigger earthquake and affect cities up and down the West Coast.

A "Big One" on the Cascadia subduction zone in the Pacific Northwest might trigger a similarly serious earthquake on California's San Andreas Fault, new research suggests. The findings are based on ...