Using advanced underwater scanning techniques, scientists have mapped the Cascadia Subduction Zone — a 600-mile fault line extending from southern Canada to northern California — in never ...

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 ...

The 800-mile San Andreas Fault is one of the largest fault lines in the world. A meeting of the North American and Pacific tectonic plates, this transform fault (where two tectonic plates move ...

A new paper in the journal Nature offers an explanation for why the major fault line is overdue for the Big One. By Thomas Fuller It has been about three centuries since the last great earthquake ...

SACRAMENTO, Calif. (KTXL) — There are more than 500 active faults and 15,700 known faults in California, and most residents live within 30 miles of an active fault, according to the California ...

The Hikurangi Subduction Zone is New Zealand’s largest fault line, running off the east coast of the north island. It marks the boundary of the Pacific and Australian plates, ...