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

The West Coast of North America is a geologically tumultuous zone where tectonic plates collide, subducting under and ...

Scientists from Oregon State University studying sediment layers in the Pacific Ocean have discovered that two of the most notorious faults on the West Coast — the San Andreas Fault in Northern ...

A mega-earthquake might be triggered by two volatile faults, striking in unison, with one quake nudging the other into ...

Millions of residents, students and office workers in Los Angeles and Orange counties and across the state will “drop, cover ...

A major earthquake hasn’t struck any of California’s biggest cities in more than three decades, but the “Big One” is a matter ...

Scientists compared sediment deposits created by underwater landslides from earthquakes within the Cascadia Subduction Zone ...

A Cascadia subduction zone earthquake is coming for the Pacific Northwest, and when it hits, scientists now believe, it could ...

With the Great ShakeOut earthquake drill approaching, new research suggests a potential link between two major fault lines ...

Nearly a million San Diego County residents will partake in the Great California ShakeOut earthquake drill at 10:16 a.m.

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

They are two of the West Coast’s most destructive generators of huge earthquakes: The San Andreas fault in California and the ...