Ancient East African rocks show a rare type of volcano


Stones found from mountains far away in East Africa offer scientists new insights about an unusual type of volcanic volcano that is considered more dangerous.

Aluto, who slept on a stratovolcano in the Riot Valley in Ethiopia, erupted for the last time 2000 years ago. Previous studies have shown that outbreaks are not significant and only threaten people around the volcano. But the type of volcanic activity that causes ancient eruptions, known as pumice eruptions, is not well understood.

To characterize more precisely the nature of Aluto’s last eruption, which occurred in 50 AD. Ch., Scientists have used a number of analytical techniques to study several rock samples.

The unique stones have a fusion home interior surrounded by a thin layer of volcanic glass, which is said to have remained hot and sticky when stored by ancient eruptions.

Floating volcanoes rarely occur worldwide, but are common in East Africa, Iceland and New Zealand.

Because the stones were found far from the Aluto cone, the researchers concluded that the old eruption was definitely stronger than the researchers calculated earlier. The authors of the new study published this month in the journal Nature Communications, suggest that rocks are transferred from the caldera through rock, ash and gas avalanches that are too hot and move quickly.

The results allow geologists to better assess the risk of volcanic eruptions.

“Many people live in and around this volcano, which is also home to valuable geothermal infrastructure,” Ben Clark, a doctoral student at the University of Edinburgh, said in a press release.

“Our work shows that future volcanic eruptions have the potential to cause significant damage, removed from volcanoes than previously thought. Continuing to understand and manage interdisciplinary research, this risk is needed to protect people and infrastructure in Ethiopia”

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