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IPFS News Link • Geology

A Surprising Amount of Magma Is Under Yellowstone's Supervolcano

• arclein

Magma consists of rocks and crystals at varying stages of solidity-the more melted, or liquid, the magma is, the more likely a volcano is to erupt. Two large reservoirs full of magma exist beneath the Yellowstone Caldera-one that's about three to ten miles beneath the surface, and another that's 12 to 30 miles below ground. Based on previous research, scientists thought the shallower reservoir was mostly solid, with just 5 to 15 percent melted rock. Now, however, after using powerful supercomputers to re-analyze existing seismic data from the past 20 years, they believe that proportion is actually 16 to 20 percent.