The U.S. Geological Survey Cascades Volcano Observatory said the swarm began early Tuesday at the 14,410-foot volcano near ...

The Concord Fault in the Bay Area is not where scientists thought. A new 4.4-mile segment is shifting under homes, prompting plans for an Earthquake Fault Zone. The fault could cause earthquakes as ...

The fault has moved the curbs as much as a handspan, around 18 centimeters, since the time they were installed, up to 60 ...

MOUNT RAINIER, Wash. — A swarm of small earthquakes was detected at Mount Rainier Tuesday morning, according to the U.S.

The probability of occurrence and return periods for earthquakes of various magnitudes in each terrane indicate that the regions related to the Najd strike-slip fault system are probably the regions ...