A minor earthquake struck in Illinois on Tuesday, Jan. 20, according to the U.S. Geological Survey. The 3.8 magnitude quake ...

Northern California’s coast keeps you on alert, even on quiet days. Offshore, three tectonic plates meet near Humboldt County ...

A light, 4.9-magnitude earthquake struck in Southern California on Monday, according to the United States Geological Survey.

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San Andreas fault meets the Cascadia subduction zone, an area that ...

Tremors beneath Northern California show hidden plate movement, helping scientists better understand where future big ...

Tiny earthquakes have revealed potentially deadly hidden faults beneath California. By tracking swarms of very small tremors, ...

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

The Cooperative National Geologic Map offers a complete and detailed look at the bedrock and fault systems of the continental United States. The first geological map of the United States was published ...

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

An earthquake was recorded at about 12:35 universal coordinated time (UTC) or about 6:30 a.m. CT Friday near Artesian, ...

A minor earthquake struck near Petrolia, California. This small tremor serves as a reminder of California's constant seismic ...