Along the remote coast where the San Andreas Fault meets the Cascadia subduction zone, earthquakes too small for humans to ...

Many of the state’s largest earthquakes have struck near the junction, where the Pacific, North American and Gorda plates ...

A hidden chunk of an ancient tectonic plate is stuck to the Pacific Ocean floor and sliding under North America, complicating ...

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San ...

Learn about the movement of tectonic plates off the coast of northern California, a process that could incite major ...

Scientists are uncovering a hidden and surprisingly complex earthquake zone beneath Northern California by tracking swarms of ...

Seismologists have discovered hidden faults at the Mendocino Triple Junction by tracking tiny earthquakes using a new ...

Over the past few days, residents of Sonoma County have felt a handful of earthquakes — a magnitude 4.0 near Glen Ellen followed by several smaller aftershocks and minor tremors in nearby areas. The ...