Pyroclastic flows are more or less avalanches made of hot volcanic debris. They can be formed from the collapse of an ash column when the force pushing the volcanic debris (tephra) can no longer ...

The island volcano unleashed a pyroclastic flow ... But Sakurajima streams andesite, a sticky, viscous lava that usually has a high gas content. "To have these explosive eruptions be so regular ...

An international team of scientists has uncovered the secrets of the speed of pyroclastic flow that brings death and destruction following a volcano eruption. A pyroclastic flow is an extremely ...

Here we demonstrate that, for a number of lunar pyroclastic deposits, near-infrared reflectance spectra acquired by the Moon Mineralogy Mapper instrument onboard the Chandrayaan-1 orbiter exhibit ...

As you can see above, a hot, speedy mix of gas and rock known as a pyroclastic flow obliterated a big chunk of a local golf course.

YAMAGUCHI—An eruption of Mount Aso in Kumamoto Prefecture 90,000 years ago created a pyroclastic flow that traveled 170 kilometers north to the Sabagawa river here, the longest such distance ...