Four earthquakes, measuring up to nearly three on the Richter scale, were recorded within two hours of each other near Concrete on Monday morning. All four earthquakes were recorded approximately four ...

First global map of mantle earthquakes reveals seismic activity far beneath continents, challenging old ideas about Earth’s deep rocks.

Northern California’s coast keeps you on alert, even on quiet days. Offshore, three tectonic plates meet near Humboldt County at the Mendocino Triple Junction. It is where the San Andreas fault system ...

Along the remote coast where the San Andreas Fault meets the Cascadia subduction zone, earthquakes too small for humans to feel are sketching out a hidden map of danger. By tracking these tiny tremors ...

Deep earthquakes often relax faster compared with those that rupture close to the surface.

Add Yahoo as a preferred source to see more of our stories on Google. Tiny quakes help scientists map hidden faults where the San Andreas meets Cascadia, reshaping quake hazard estimates. (CREDIT: ...