California is home to hundreds of faults. This partly explains why the state sees so many earthquakes. They can range wildly in size and shape. A fault is a fracture zone between two large blocks of ...

How different types of faults form earthquakes Did you know there are different kinds of faults within the Earth? See how each one forms earthquakes.

A hidden network of earthquake faults running beneath Seattle may be far more active than scientists realized. New research reveals that smaller “secondary” faults in the Seattle Fault Zone appear to ...

At the Seismological Society of America's Annual Meeting, researchers posed a seemingly simple question: how wide are faults? Using data compiled from single earthquakes across the world, Christie ...