SONOMA COUNTY, CA - A preliminary 2.5 magnitude quake was reported close to Glen Ellen Sunday afternoon, according to the U.S ...

CONTRA COSTA COUNTY, CA - the U.S. Geological Survey reported that a preliminary 2.2 magnitude quake occurred close to San ...

A swarm of at least six earthquakes reaching up to magnitude 2.9 rattled San Ramon near San Francisco, the U.S. Geological ...

Geologist Kirt Kempter tells the 300-million-year story of the Abiquiú area while exploring the boundary between the Rio ...

A magnitude 4.0 earthquake Sunday afternoon three miles from Santa Rosa was followed a few minutes later by magnitude 3.1 and ...

Sonoma County was hit by three earthquakes within a little more than half an hour Sunday, the largest one having a ...

Major quakes in Japan and Alaska along with a spate of smaller earthquakes in California this fall make folks ask, is the Big ...

It didn’t relent until hundreds of miles of the Central Valley turned into an inland sea, leaving the city of Sacramento ...

The San Jacinto Fault, considered part of the San Andreas Fault system, has a 5% chance of magnitude 6.7 or larger earthquakes. The line begins at Cajun Pass and runs southeast through San Bernardino, ...

A minor, 3.1-magnitude earthquake struck in Southern California on Thursday, according to the United States Geological Survey ...

The initial discovery of oil in Pennsylvania by Edwin Drake in 1859 was to forever change our uses of energy in the United ...

Ungad Chadda, CEO of Global Uranium, commented: "This mapping program has strengthened our geological understanding of the ...