What's under Mt. Hood? (2 of 2) (IMAGE)

University of California - Davis

What's under Mt. Hood? (2 of 2)

Caption

Rocks ejected from Mt. Hood show that the magma under the volcano has been liquid enough to erupt for less than 10 percent of the last 20,000 years. If generally true, this could have implications for understanding when a volcano is most ready to erupt.

Credit

Eric Klemetti, Denison University

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