HAMILTON, Mont. – A mapping method used to look at floodplains in the Bitterroot Valley turned up something unexpected: a new fault line that just might cross under the Lake Como Dam. Jeff Lonn, a ...

Just off the highway near Washington’s Tri-Cities, 20 miles southeast of Pasco, Steve Angster steps into a giant trench. In it, the U.S. Geological Survey geologist is hoping to find evidence of a ...

With every small rumble that triggers their seismographs, Nevada geologists inch closer to understanding hazards posed by earthquake faults in the Las Vegas Valley. There's no time to waste, they say, ...

This vertical cliff consists of soft mud deposited on the Japan Trench bottom and was uplifted ~60 m by the 2011 megaquake. This was the first time that the fault scarp of a trench-type earthquake was ...