Tectonic plates are massive slabs of Earth's lithosphere that float atop the semi-fluid mantle, constantly shifting and ...

A Japanese researcher has found that two small islands in southwestern Japan moved nearly 10 centimeters apart in just three ...

The Concord Fault, which runs through Bay Area neighborhoods in Concord and Walnut Creek is in a different location than previously understood. It could produce a major earthquake in the Bay Area.

More than 1,300 earthquakes have hit Japan's Tokara Islands in two weeks, prompting evacuations of dozens of residents from the remote archipelago on the country's southern tip.