Massive magma pool found deep below Yellowstone | Science News

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Massive magma pool found deep below Yellowstone

Discovery explains why supervolcano exhales so much carbon dioxide, but doesn’t up risk of eruption

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2:00pm, April 23, 2015
Yellowstone's magma reservoir

HOT STUFF   Scientists have spotted a massive magma reservoir buried deep inside the Yellowstone supervolcano, connecting the mantle plume that fuels the volcanic system to a smaller magma chamber closer to the surface.

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Every day, the supervolcano lurking under Yellowstone National Park belches up 45,000 metric tons of carbon dioxide — much more than could be produced by the known magma chamber that lies just below the surface. Now, scientists have spotted a source of the excess gas, and it’s a doozy. They’ve discovered a magma pool containing enough hot rock to fill the Grand Canyon 11 times, the researchers report online April 23 in Science.

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