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molten rock

File photo of one part of Yellowstone National Park. (Photo credit: MARK RALSTON/AFP/Getty Images)

Study: Yellowstone Magma Could Cause Eruption 2,000 Times Larger Than Mount St. Helens

The hot molten rock beneath Yellowstone National Park is 2 ½ times larger than previously estimated, meaning the park’s supervolcano has the potential to erupt with a force about 2,000 times the size of Mount St. Helens, according to a new study.

12/16/2013

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