Beneath the Pacific Northwest lies the Cascadia Subduction Zone a 600 mile fault capable of producing magnitude 9 earthquakes and massive tsunamis. The last rupture in 1700 shook the region for ...

The Cascadia Subduction Zone has been quiet for more than three centuries, but that silence is exactly what alarms the scientists who study it. Along roughly 600 miles of fault off the Pacific ...

A massive earthquake off the Pacific Northwest coast is not a distant abstraction but a well-defined geological threat. Along the Cascadia Subduction Zone, where one tectonic plate dives beneath ...

Federal emergency planners treat the Cascadia Subduction Zone as one of the clearest natural-disaster threats in North America, and their models point to specific warning signs that a $134 billion ...

Scientists recently announced a terrifying find: A megaquake on the fearsome Cascadia fault in the Pacific Northwest could trigger a huge tremor on the San Andreas fault - essentially back-to-back ...

A hidden shard of ancient crust has been detected where California’s San Andreas system collides with the Cascadia subduction zone, reshaping how I understand the tectonic engine of the West Coast.

Far below the Pacific, scientists are mapping a hidden record of catastrophe carved into the seabed by ancient Cascadia earthquakes. Those deep scars, preserved in massive underwater landslides, are ...

The Cascadia Subduction Zone has been quiet for more than three centuries, yet its silence is exactly what alarms the scientists who study it. Along a 600 mile fault off the Pacific Northwest coast, ...