Latest Pyroclastic flow Stories
The exceptional preservation and diversity of dinosaur, bird and early mammal fossils present in the fossil beds of northern China are famous. How these creatures died, and why hundreds of creatures from different habitats were buried together on ancient lake floors, has yet to be understood.
Several thousand people have been evacuated from the Tanah Karo district of North Sumatra following a volcanic eruption on Mount Sinabung. The volcano, which has emitted several sizeable eruptions over the past few months, is now threatening 10 nearby villages.
New research has taken a closer look at how ash produced from supervolcanoes can turn back into lava once it falls back to Earth.
One of the world’s most active volcanoes showed its ugly side this weekend, erupting and producing an ash cloud that spread out across one southern Japanese city.
Although less than two percent of the fossils on earth are preserved in volcanic rock, researchers from the University of Montpellier have identified a new one. They found the skull of a rhino that perished in a volcanic eruption 9.2 million years ago.
Guatemalan authorities raised an alert after the country’s most active volcano, Fuego, began spewing lava and columns of ash into the air at around 2:45 a.m. (0745 GMT) on May 19.
A 3-D model of a volcanic explosion, based on the 1980 eruption of Mount St Helens in Washington state, may enhance our understanding of how some volcanic explosions occur and help identify of blast zones for potentially dangerous locations.
Government officials in the Philippines say that Mayon volcano could erupt violently within days, following a week of spectacular flows of lava and increasing volcanic quakes.
When volcanoes erupt, pinpointing the regions at high risk for lethal hazards and deciding whether or not to evacuate a resistant population comprise the most difficult problems faced by hazards managers.
Thursdayâ€™s volcanic eruption may have just been a warm-up. Tungurahua, a volcano in Ecuador which has been active since 1999 began releasing high levels of energy on December 22, 2007, less than a month ago. On Thursday, Tungurahua flung firey rocks and a column of ash and steam shot 1.5 miles above the crater. Prior to this eruption, 1,000 villagers were evacuated from the western slopes; experts had warned that Tungurahua is poised for a major eruption within a few days to a few weeks.
Volcanic ash is the term for very fine rock and mineral particles less than 2 mm in diameter that are ejected from a volcanic vent. Ash is created when solid rock shatters and magma separates into minute particles during explosive volcanic activity. The usually violent nature of an eruption involving steam (phreatic eruption) results in the magma and perhaps solid rock surrounding the vent, being torn into particles of silt to sand size. The plume that is often seen above an erupting volcano...
- A volcanic mudflow.