Scientists discovered that deep earthquake faults can heal far faster than expected, sometimes within hours. Slow slip events ...

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 ...

A geological fluke revealed that earthquakes in the Pacific Northwest may have triggered the San Andreas Fault in the past. The discovery raises fears that the next massive Cascadia quake could ignite ...

PORTLAND, Ore. — Tomorrow marks the International Shakeout, when millions of people around the world will hold earthquake drills. In Oregon, the event coincides with a major discovery by local ...

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A new study suggests that a massive Cascadia megathrust earthquake, capable of producing magnitude 9 shaking, tsunamis, and landslides, might also set off the San Andreas Fault, triggering a second ...

The threat of a 9.0-magnitude earthquake along the Cascadia Subduction Zone has hung over the Pacific Northwest for decades. Seismologists and emergency managers say “The Big One” could be one of the ...

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 ...

For decades, residents in the Pacific Northwest and California have trained for the arrival of the impending “Big One,” a catastrophic +8.0 magnitude mega-earthquake that could level the entire ...

The disaster caused by a predicted large earthquake in the Pacific Northwest could be compounded by shaking along the San Andreas fault in California, scientists warned. By Sarah Scoles In the world’s ...

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 ...

The West Coast of North America is a geologically tumultuous zone where tectonic plates collide, subducting under and scraping past one another. Over the eons, this activity has regularly caused major ...