An earthquake that shook Southern California today was centered near the community of Julian, about 45 miles northeast of San Diego. Shaking was also felt in the Los Angeles area.

While not a household name like the San Andreas, the Elsinore fault is part of a larger seismic zone that experts fear and ...

Using rock samples collected from the Wasatch Fault, geoscientists combined experiments and analysis with examinations of fault rock textures. The team's research revealed significant clues about the ...

About 240 miles long, Utah's Wasatch Fault stretches along the western edge of the Wasatch Mountains from southern Idaho to ...

including rupture maps, creeping zone width from surveys of slowly shifting monuments along faults and satellite observations, the locations of earthquake aftershocks, low velocity damage zone ...

Below California's famed beaches, mountains and metropolitan areas lies a sinister web of earthquake faults — some so infamous that their names are burned into the state's collective consciousness.

Additional information collected about the earthquake may also prompt U.S.G.S. scientists to update the shake-severity map. An aftershock ... along the portion of a fault that slipped at the ...