Mixtures of hot volcanic rock and gas called pyroclastic flows travel so far by gliding on air, a new study suggests.

Pyroclastic flows of the 18.8 Ma Peach Spring Tuff super-eruption travelled >170 km and entrained substrate blocks up to ∼1 m diameter. Here, the authors show that these flows had a dense ...

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Scientists think they’ve figured out how pyroclastic flows, fast-moving bringers of death during volcanic events, can travel such incredible distances and speeds despite the friction between the ...

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 ...

A new study sheds light on what happens when a supervolcano erupts, providing insight on how rivers of hot ash and gas called pyroclastic flows manage to travel huge distances of over 100 miles ...

Results showed that the pyroclastic flows "generate their own air lubrication," the team wrote. It found that an area of high-pressure volcanic material forms toward the base of the flow.

How Guatemala’s Fuego volcano released a flow of hot gas and volcanic rock, consuming villages and a golf resort in just minutes.

A pyroclastic flow from Mayon in the Philippines, seen on September 23, 1984. I've labeled the main parts of a pyroclastic, with the leading surge, main body and accompanying ash cloud.

Guatemala's Volcan de Fuego -- Volcano of Fire -- erupted spectacularly Sunday, shooting a plume of ash and gas nearly 6 miles into the sky and spreading ash and debris across towns and farms more ...