What appears to be such a pleasant meeting-place of the well-known rifts, in the Northern part of California, is proving to ...

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.

Three huge tectonic plates meet at the Mendocino triple junction off the coast of northern California, and a new study ...

Invisible earthquakes are revealing a hidden tectonic puzzle beneath California’s most dangerous fault zone.

What appears to be three tectonic plates in a map may act like five pieces that move underground. Northern California ...

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

Scientists uncover hidden faults beneath Northern California’s Mendocino triple junction. The discovery reshapes ...

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Scientists discover ultra-weak faults near the 7.2 magnitude earthquake in Haiti that continued to slip for weeks.

The San Andreas Fault (red lines) and the other plate boundaries (green lines). Color contours indicate the presumed fault slip distribution of the 1700 Cascadia Subduction Zone earthquake. Circles ...

Researchers discovered new undersea faults on the Pacific plate, some of which are thousands of meters below the surface of the ocean and hundreds of kilometers long. Credit: NOAA/NASA GOES Project A ...

The earthquakes that ripped across southern Turkey and northern Syria in the small hours of February 6th were among the most devastating of this century. Within three days of the disaster, the ...