Supervolcanoes discovered in Utah by BYU geologists

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Brigham Young University geologists found evidence of some of the largest volcanic eruptions in earth’s history right in their own backyard.

 

These supervolcanoes aren’t active today, but 30 million years ago more than 5,500 cubic kilometers of magma erupted during a one-week period near a place called Wah Wah Springs. By comparison, this eruption was about 5,000 times larger than the 1980 Mount St. Helens eruption.

 

 

http://news.byu.edu/archive13-dec-supervolcano.aspx