Recent seismic imaging off Vancouver Island has revealed something extraordinary: a tear in the subducting oceanic plate ...

The Cascadia Subduction Zone is “unusually quiet,” for a megathrust fault, making it more difficult for scientists to ...

The Cascadia Subduction Zone off the Pacific Northwest is overdue for an earthquake – and when it happens, coastal ...

Add Yahoo as a preferred source to see more of our stories on Google. Construction workers and vehicles move around the Capitol. Gov. Kotek’s order to earthquake-proof state buildings comes as the ...

Scientists recently announced a terrifying find: A megaquake on the fearsome Cascadia fault in the Pacific Northwest could trigger a huge tremor on the San Andreas fault - essentially back-to-back ...

For generations, scientists believed that the West Coast’s two great earthquake engines — the Cascadia subduction zone and the San Andreas fault — operated on separate geologic stages. One dives, one ...

CORVALLIS, Ore. – Two fault systems on North America’s West Coast – the Cascadia subduction zone and the San Andreas fault – may be synchronized, with earthquakes on one fault potentially triggering ...

It’s like a plot from a Hollywood movie. A massive earthquake on one West Coast fault triggers other earthquakes far away, causing vast destruction over hundreds of miles. A new study out Tuesday ...

SAN FRANCISCO -- Scientists say there's new evidence that two of the best-known earthquake fault lines on the West Coast are in sync and that has the potential for a major disaster. A new study by ...

At the Cascadia subduction zone in the Pacific Northwest, one tectonic plate is moving underneath another. New experimental work at UC Davis shows how rocks on faults deep in the Earth can cement ...

If the Cascadia subduction zone and the San Andreas fault can act in concert, then seismic models must consider the possibility of coupled behavior. That could mean a higher short-term risk of back-to ...