In some parts of Earth's interior, seismic waves travel at different speeds depending on the direction in which they are ...

Researchers named the spring "Pythia’s Oasis" for Ancient Greece's Pythia, an oracle who sat in a temple above a crack in the ...

OSU researchers find Cascadia Subduction Zone and San Andreas Fault may be synchronized — with the potential for quakes on ...

A new geological study suggests that California’s San Andreas Fault and the Cascadia Subduction Zone, two of the most ...

These are two very different fault systems, but the sediment record suggests that in the past, at least three San Andreas ...

A subduction zone near Cascadia is unraveling piece by piece. The process offers a rare glimpse into how tectonic plates die ...

A new study found that the two sleeping giants, the Cascadia subduction zone and the northern San Andreas fault, have been moving in rhythm for millennia, shaking within hours of each other in a ...

Samples from the seafloor reveal evidence of several earthquakes along the West Coast’s two major fault zones happening in ...

SAN FRANCISCO (KGO) -- 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 ...

Although Californians are relatively familiar with the San Andreas Fault, the Cascadia Subduction Zone is in many ways more ...

29. For example, researchers found evidence that the last magnitude 9 earthquake in the Cascadia subduction zone - in 1700 and so large that it caused a tsunami in Japan - also produced a major ...

Cascadia subduction zone and the San Andreas fault - may be synchronized, with earthquakes on one fault potentially ...