Geologists may be close to cracking one of the biggest seismological mysteries in the Pacific Northwest: the origin of a powerful earthquake that rattled seven states and provinces when Ulysses S. Grant was president.
Two moderate earthquakes have struck central California, one of which was widely felt across the region.
A team of researchers from Cambridge's Department of Earth Sciences have recently returned from Iceland where, thanks to a bit of luck, they have gathered the most extensive dataset ever from a volcanic eruption, which will ...
The magnitude-4.0 earthquake that rattled people awake across the Puget Sound region last Wednesday probably struck on the western edge of the Seattle Fault, according to geologists.
Man-made earthquakes, a side effect of some high-tech energy drilling, cause less shaking and in general are about 16 times weaker than natural earthquakes with the same magnitude, a new U.S. study found.
(AP)—Seismologists in Alaska say earthquakes have jolted four different parts of the state in the last 12 hours.
States where hydraulic fracturing is taking place are experiencing unprecedented earthquake activity.
The U.S. Geological Survey has recorded seven small earthquakes shaking central Oklahoma in a span of about 14 hours.
Earthquakes used to be almost unheard of on the vast stretches of prairie that unfold across the U.S. Midwestern states of Texas, Kansas and Oklahoma.
Seismologists say a moderate earthquake that shook northwest Alaska on Monday was the fifth of the same magnitude since April in an area with otherwise little activity.