Pillow Basalt from Submarine Eruptions (IMAGE)

University of California - Berkeley

Pillow Basalt from Submarine Eruptions

Caption

By measuring the oxidation of iron in pillow basalts from undersea volcanic eruptions, UC Berkeley scientists have more precisely dated the oxygenation of the deep ocean, inferring from that when oxygen levels in the atmosphere rose to current high levels.

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Courtesy of National Science Foundation

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