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Volcanic Eruptions
Scientists follow magma from Earth's belly to base of Mt. Rainier
Scientists follow magma from Earth's belly to base of Mt. Rainier

The lava that spews from the fiery rims of volcanoes originates deep in Earth’s crust, often more than 50 miles below our feet. Although scientists have a general idea where this magma comes from, it’s nearly impossible to see exactly what’s happening so far beneath the surface. Recently, however, scientists used a network of extremely sensitive instruments that act like metal detectors to shed light on this process. In a study published Wednesday in the journal Nature, researchers painted a superbly detailed picture of the plumbing beneath Washington’s Mt. Rainier, an active volcano. The scientists found that most of the volcano’s magma forms deep in the...

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