This week marks the 326-year anniversary of the Jan., 26, 1700, magnitude-9 megathrust earthquake and associated tsunami that hit the Olympic Peninsula.

Scientists are uncovering a hidden and surprisingly complex earthquake zone beneath Northern California by tracking swarms of ...

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

Northern California’s coast keeps you on alert, even on quiet days. Offshore, three tectonic plates meet near Humboldt County ...

The North American craton actually dips near the Rockies rather than forming a sharp vertical step as previously believed.

Our planet's lithosphere is broken into several tectonic plates. Their configuration is ever-shifting, as supercontinents are assembled and broken up, and oceans form, grow, and then start to close in ...

SEATTLE — Newly-released research led by the University of Washington (UW) showed that a feature scientists hypothesized was present along the Cascadia Subduction Zone is missing in places. What does ...

A recent voyage got up close and personal with an underwater fault that could reshape life in the Pacific Northwest. Anne Trehu, a Professor Emeritus who worked at Oregon State University says "There ...

A budding subduction zone offshore of Spain heralds the start of a new cycle that will one day pull the Atlantic Ocean seafloor into the bowels of the Earth, a new study suggests. Understanding how ...