Scientists Follow Rising Magma Beneath Mount Rainier

July 18, 2014 2:35 PM

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Using a network of extremely sensitive instruments, scientists are painting a more detailed picture of the inner workings of the molten rock deep beneath some of North America's most active and dangerous volcanoes.

The network, acting like a giant metal detector, has helped geophysicists understand the process that brings magma from 50 miles below the surface to active volcanoes like Mount Rainier in Washington State.

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