An earthquake has struck California's Bay Area right along a fault line experts now fear may be the surprise cause of the long-awaited 'Big One.' The US Geological Survey (USGS) said the 3.2 ...

As the name suggests, a branch fault is a minor fault that branches off from a major fault. In the US, the 2002 magnitude 7.9 Denali earthquake that struck Alaska originated on a branch fault.

A group of fault lines sit underground near Van Horn, Texas, dating up to 1.6 million years old, according to a map published by the USGS.

New Jersey was once home to a fiery volcano roughly the size of Mount St. Helens – that sits in the same county as a newly mapped fault line. Rutan Hill, in Wantage, NJ, appears to be and is ...

SPOKANE, Wash. — Earthquakes are not uncommon in Washington, but many people think of them as a westside thing. The most concerning fault line, the Cascadia Subduction Zone, runs along the west ...

A group of fault lines sit underground near Van Horn, Texas, dating up to 1.6 million years old, according to a map published by the USGS.