Pyroclastic passage zones record the lateral facies changes from a subaerial (pyroclastic flow, surge and fall deposits) to a subaqueous (turbidity currents, water-lain fall) depositional environment.

A supervolcano is located at Yellowstone National Park. Here's what happens to North America and the rest of the world if ...

In a $607,000 study funded by the National Science Foundation, researchers from the University at Buffalo, Arizona State University (ASU) and Boise State University are taking a close look at these ...

Pyroclastic flows are made up of a mix of hot lava, pumice, ash and volcanic gases. They can reach temperatures of up to 1,000 degrees Celsius and can—in extreme cases—move down the slopes of ...

Analyzing pyroclastic flows in real life is not only difficult, but also profoundly dangerous. So a team of scientists decided to replicate them in a laboratory using a literal ton of volcanic ...

Pyroclastic flows can reach 1,300 degrees, the U.S. Geological Survey said. The flows can "destroy buildings and flatten forests," tweeted volcanologist Rebecca Williams of the University of Hull.

Aqua/MODIS image of Paluweh in Indonesia taken on February 5, 2013. The southern half of the image looks greyer than the January 27, 2013 image (above), evidence of the ash and pyroclastic flow ...

The USGS says that pyroclastic flow — made up of small pieces of rock, ash and hot gas — can vary in speed, it is universally deadly and destructive. “A pyroclastic flow will destroy nearly ...

Pyroclastic flows are searing-hot mixtures of volcanic material and gas that travel explosively down the slopes of volcanoes, sometimes traversing tens of miles at hundreds of miles per hour.

The pyroclastic flows are "like a hot cloud traveling at speed down the side of a volcano, and it devastated everything in its path," Mather said. These flows cause death from the heat, ...