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

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

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

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

One of the most terrifying discoveries for the US population in general has just been made off the north coast of California. Scientists have found geological faults that had remai ...

Seismic tremors reveal a shallow fragment of ancient tectonic plate beneath Northern California, helping explain damaging ...

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 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 ...