The Latest Breaking News from Cascadia Subduction Zone

Scars from ancient 'megaquakes' at Cascadia subduction zone discovered in deep-sea landslides

Large subduction-zone earthquakes leave scars on the continental slope in the deep sea.

LiveScience · Jan 16

Fragment of lost tectonic plate discovered where San Andreas and Cascadia faults meet

A hidden chunk of an ancient tectonic plate is stuck to the Pacific Ocean floor and sliding under North America, complicating earthquake risk at the Cascadia subduction zone.

LiveScience · Jan 15

Ruptures from 'silent' earthquakes deep in Earth's crust can heal themselves within hours

Researchers re-created the conditions deep inside the Cascadia subduction zone and found that fractured rocks can repair themselves during, or just hours after, slow-motion earthquakes.

LiveScience · Nov 25, 2025