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etvfutures.com December 16, 2017


Yellowstone supervolcano could erupt much sooner than predicted, study reveals

13 October 2017, 04:26 | Lucia Cruz

GETTYA Yellowstone eruption could destroy life on Earth

GETTYA Yellowstone eruption could destroy life on Earth

Should it ever erupt, a supervolcano beneath Yellowstone National Park could blanket North America in an ash cloud, wipe out communications, and alter the climate.

"We see interesting things all the time ... but we haven't seen anything that would lead us to believe that the sort of magmatic event described by the researchers is happening", says Poland via email, adding that the research overall is "somewhat preliminary, but quite tantalizing". It was the site of a supervolcanic eruption 630,000 years ago, when a fresh influx of magma surged into the space beneath what's now Yellowstone. The researchers from Arizona State University have analyzed the minerals found in the fossilized ash taken out from the latest mega-eruption.

The Yellowstone supervolcano could easily change life on our planet for centuries.

The last super eruption in the Yellowstone National Park was occurred around 631000 years age. And a 2013 study reported that the magma reservoir that feeds the supervolcano is about two and a half times larger than previous estimates.

According to National Geographic, after analysing the ancient ash, the researchers - Hannah Shamloo and Christy Till - found that the changes in temperature and composition only took a few decades.

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Tiny crystals left over from underground magma at Yellowstone show the first sign of the last supereruption was a spike in temperature that coincided with the movement of new magma into the reservoir beneath the supervolcano. At that time, volcano expert Bob Smith, from the University of Utah said that it was an extraordinary uplift because it covered a very large area and the rates were very high.

Shamloo and Till previously presented their research at a 2016 meeting held by the American Geophysical Union.

"It's shocking how little time is required to take a volcanic system from being quiet and sitting there to the edge of an eruption", she told the NY Times, noting more research is necessary before a definitive conclusion can be reached.

In June, nearly 400 earthquakes hit the Yellowstone supervolcano, but researchers said that it was not a case of worry.

"We are all just living at the mercy of the super volcano under Yellowstone".



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