Dr. Kate Scharer, a research geologist with the U.S. Geological Survey, still refers to the San Andreas Fault as "the big winner" but noted the San Jacinto Fault or the Imperial Fault, which had ...

The latest quake was the third to hit the area which sits near a number of fault lines running through California including the Arrowhead, Waterman Canyon, San Jacinto, Santa Ana, Cleghorn, and ...

The Elsinore fault can be thought of as a sibling of the San Andreas, along with the sizable San Jacinto fault, said Kate Scharer, research geologist with the U.S. Geological Survey.

The southern San Andreas, part of a network of faults that run across California, has the most potential for destruction because of the large number of people who live in the area — 10 million ...

The southern San Andreas fault in California is in a seismic drought, going more than 300 years without a major earthquake. New research shows the lack of seismic activity may be due to the drying ...

Report: San Andreas Fault Due for 'Big One' A massive earthquake is overdue at the southern end of the San Andreas Fault, according to a new study. Robert Siegel talks with the author of the study ...

Most people have heard about the San Andreas Fault. It’s the 800-mile-long monster that cleaves California from south to north, as two tectonic plates slowly grind against each other, threatening to ...

The San Andreas Fault has been causing concern among experts as multiple segments appear to be significantly stressed. For this reason, they fear that a gigantic earthquake could be imminent.

By contrast, an earthquake on the Puente Hills thrust fault system probably would max out at a magnitude 7.5 — still powerful, but less so than the southern San Andreas.

High Desert residents described Wednesday night’s earthquake near the San Andreas and San Jacinto faults as a mild jolt followed seconds later by a stronger one. The U.S. Geological Survey ...