Researchers Discover Why the Yellowstone Supervolcano Is Rising

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Everyone wants a picture with Old Faithful. But what many tourists don’t realize is that the hot springs and geysers of Yellowstone National Park are a constant reminder that 12 to 30 miles beneath the surface, there’s still an active volcanic system. And the Yellowstone Caldera, the expanse of supervolcano surface that takes up most of the park, is moving. Researchers from the U.S. Geological Survey published an article about Yellowstone’s uplift in January in the Journal of Geological Research—Solid Earth.

In the article, researchers highlighted two recent instances of uplift on the Yellowstone Caldera. One was in 2013–14, and another was in 2016. Both cases, researchers said, can actually be traced to underground magma movement from 20 years ago.

The entire Yellowstone Caldera is situated above a magma reservoir. Calderas themselves are…

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