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• Supervolcanoes may erupt when cracks form in the roofs of the chambers holding their molten rock

  Nov 19, 2015 10:30 am by Discovery NewsIllinois in the News
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  Discovery News (Nov. 17) - Illinois Volcanologist Patricia Gregg says the infrequency of supereruptions indicates there's a difference between them and smaller, more frequent eruptions.

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