Northern California’s coast keeps you on alert, even on quiet days. Offshore, three tectonic plates meet near Humboldt County at the Mendocino Triple Junction. It is where the San Andreas fault system ...

An earthquake struck near the High Desert community of Pearblossom, and along the San Andreas Fault. The magnitude 3.3 quake struck at 10:49 p.m. on Monday, Sept. 8, four miles south of Pearblossom in ...

Remote sections along California’s massive San Andreas Fault, where large earthquakes regularly occur, may be primed to shake again any day now, according to a new study. The area around Parkfield in ...

The geometric structure of rocks where earthquakes occur could play a key role in determining their location and strength, researchers have found. A study, carried out by geologists at Brown ...

A Pattern That Crosses Fault Lines What emerged was an extraordinary pattern: over the last 3,100 years, many major earthquake layers in southern Cascadia aligned in time with those from the northern ...

California is overdue for a major earthquake on the southern San Andreas fault, which could be due to the absence of a large lake that may have triggered past quakes. The San Andreas fault runs ...

The disaster caused by a predicted large earthquake in the Pacific Northwest could be compounded by shaking along the San Andreas fault in California, scientists warned. By Sarah Scoles In the world’s ...

Last Monday, April 14, an earthquake caught many people’s attention in Southern California. It was centered near the town of Julian about 35 miles inland from San Diego and triggered the USGS ...

Add Yahoo as a preferred source to see more of our stories on Google. Tiny quakes help scientists map hidden faults where the San Andreas meets Cascadia, reshaping quake hazard estimates. (CREDIT: ...

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 ...