Mapping out geology across the U.S. is surprisingly difficult, but the USGS has managed just that, and its map is more ...

A 5.4-magnitude earthquake was reported in Alaska on Thursday (October 30), according to the United States Geological Survey.

HOWARD COUNTY, Md. - A 2.5 magnitude earthquake was recorded in Howard County, Md. on Monday. According to the United States ...

Residents in Northern Colorado may spot a low flying helicopter in the area over the next three months due to an ongoing geological survey. The United States Geological Survey will be using airborne ...

A U.S. Geological Survey representative told the Little Calumet River Basin Development Commission in August that arsenic ...

The United States Geological Survey confirmed Monday that an earthquake occurred in the Columbia and Savage area.

Local emergency agencies say they are monitoring the seismic activity but have not issued any tsunami warnings.

A 2.5 magnitude earthquake struck communities in Maryland, confirmed by USGS, with no reported damages or injuries.

Two earthquakes struck off the Oregon coast on Tuesday, rattling communities along the Pacific Northwest shoreline.

A 3.2-magnitude earthquake struck Sunday morning near Lafayette. Hours later, another earthquake struck Northern California, ...

YACHATS, Ore. — A 5.4 magnitude earthquake was among two that struck early Wednesday morning off Oregon's coast. According to ...