Three minor earthquakes jolted across California overnight right along the San Andreas Fault. The quakes registered in the ...

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.

Add Yahoo as a preferred source to see more of our stories on Google. Tectonic stress building beneath Southern California could have far-reaching consequences for millions of residents from the ...

When and where will the next damaging earthquake hit the Bay Area? The USGS says the real threat comes from smaller earthquakes occurring in the San Andreas Fault Zone. Here's a map of the significant ...

Add Yahoo as a preferred source to see more of our stories on Google. A newly identified link between two notorious geologic zones suggests a major earthquake at one site could trigger another huge ...

What could the next mega-earthquake on California's notorious San Andreas fault look like? Would it be a repeat of 1857, when an earthquake estimated at magnitude 7.7 to 7.9 ruptured the fault from ...

The West Coast of North America is a geologically tumultuous zone where tectonic plates collide, subducting under and scraping past one another. Over the eons, this activity has regularly caused major ...

Three minor earthquakes have rattled across California overnight right along the San Andreas Fault, the U.S. Geological ...