This study, published in Earth and Planetary Physics, explores the subduction thermal state, slab metamorphism, and seismic ...

The mantle transition zone (MTZ), which occurs 410–670 kilometers below Earth's surface, may store several oceans' worth of water. This water, which is carried to such depths by subducting tectonic ...

People reported feeling the earthquake as far as south Pierce County, north of Seattle and around Port Orchard.

These mountains are made of extremely dense and ancient material, giving scientists valuable clues about the Earth's early ...

Three earthquakes struck Indonesia on Tuesday, with a 5.5-magnitude tremor hitting North Sumatra province in the morning, and ...

Non-volcanic tremor ramp up precedes slow slip in Cascadia by about a day, indicating that brittle-creeping process ...

A plan by Republicans in Congress would strip away $9 million in federal earmarks across Deschutes County should it become ...

The most recent risk assessment, outlined in maps published by the California Geological Survey, illustrate the devastation ...

Three earthquakes struck Indonesia on Tuesday, with a 5.5-magnitude tremor hitting North Sumatra province in the morning, and ...

Seattle-based KPFF has received a Grand Award from the American Council of Engineering Companies for its work on the Portland ...

Seismologists describe potential damage forecasts from ground shaking scenarios for moderate earthquakes in three regions of the Mexico City basin.