Volcanoes are rumbling as scientists monitor earthquakes at Washington's Mount Rainier and Alaska's Iliamna volcano.

Earthquakes within a tectonic plate, like those in the eastern U.S., do not have a clear, obvious cause," said USGS research geophysicist Dr. Thomas Pratt. More: Small earthquake hits near US ...

Earthquakes within a tectonic plate, like those in the eastern U.S., do not have a clear, obvious cause," said USGS research geophysicist Dr. Thomas Pratt. More: Small earthquake hits near US ...

But not all earthquakes occur along plate boundaries. For example, an earthquake near New Madrid, Missouri in the winter of 1811 was thousands of miles from the nearest fault, yet the magnitude 7. ...

LOS ANGELES — For decades, geophysicists believed they understood the limits of where earthquakes could occur in Earth’s interior. Then in May of 2015, a magnitude 7.9 earthquake struck at an ...

Due to the radiative thermal conductivity of the mineral olivine, only oceanic plates over 60 million years old and ...

While rare, Redding does get earthquakes strong enough for us to feel. Here's why Shasta and Siskiyou counties and the north ...

Recently, frequent earthquakes have come into the limelight, with the strongest one leading to destruction. Here are six ...

Seafloor sensors caught a rare slow quake in action. It hints at how Earth's stress is quietly released. For the first time, ...

KS3 Geography. Plate tectonics: Earthquakes. A short video for 11-14 year old pupils, exploring tectonic activity and earthquakes and featuring case studies from Haiti and New Zealand.

Bay Area breakthrough in imaging earthquakes with 1000 times more accuracy could ... the North American tectonic plate and the Pacific Plate. ... volcanic gases inside the Earth’s interior.