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News Link • Geology

Highway from Hell' Fed Deadly Volcano

• arclein
Before the deadly 1963 eruption of Irazú volcano in Costa Rica, magma surged 22 miles (35 kilometers) in about two months, traveling from the mantle to the volcano's shallow magma chamber, researchers report in the Aug. 1 issue of the journal Nature. The evidence comes from geochemical tests on crystals of the mineral olivine from ash erupted in 1963. Layers in the crystals helped re-create the magma's pre-eruption

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