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.

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 ...

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

It was a groundbreaking discovery. Scientists have found previously concealed fault lines along California’s north coast, ...

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.

A newly discovered fault complexity beneath America's most active earthquake zone raises the possibility that a major seismic ...

What appears to be three-way clash of blame somewhere off Northern California ends up being a crowded intersection with blank spots. The Mendocino Triple Junction has long been instructed as the ...

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 ...

Tiny earthquakes reveal hidden fault structures beneath Northern California, reshaping understanding of regional earthquake ...

The Mendocino Triple Junction off the coast of Northern California is the point where three tectonic plates meet. A new study reveals at least five moving pieces deep below the Earth's surface make up ...