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Under Yellowstone, Magma Pocket 20% Larger Than Thought
"The finding, based on the most detailed model yet of the region's geologic plumbing, suggests that Yellowstone's magma chamber contains even more fuel for a future "supereruption" than anyone had suspected.
The model shows that a 45-mile-wide (72-kilometer-wide) plume of hot, molten rock rises to feed the supervolcano from at least 410 miles (660 kilometers) beneath Earth's surface.
The deepest part of the plume actually sits beneath the town of Wisdom, Montana, about 150 miles (241 kilometers) from Yellowstone National Park."
NationalGeographic.com:
http://news.nationalgeographic.com/news/2009/12/091215-yellowstone-volcano-magma-plume-larger.html
