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.

The pyroclastic flow likely went over the Notanidao Pass, also in the city, which currently stands about 320 meters above sea level, Tsuji said. Pyroclastic flows sometimes travel over the sea.

Pyroclastic flows contain a deadly combination of hot rock fragments and gas. Temperatures regularly top 1,000 degrees Fahrenheit, and these torrents can careen down mountainsides at hundreds of ...

The image above shows the results of an avalanche of hot gases, ash, and rock known as a pyroclastic flow from Shiveluch volcano on the Kamchatka peninsula in Russia (from February 2011). When ...

In Guatemala, pyroclastic flow from Sunday’s eruption topped 1,800 degrees Fahrenheit (about 1,000 degrees Celsius), CNN meteorologist Ivan Cabrera said.

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 ...

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.

Some grim news out of Indonesia today. An eruption from Rokatenda (also known as Paluweh) killed at least 5 people during what appears to be a pyroclastic flow that swept (video) from the active ...

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.