Extreme Green: Earth Recycles 2.5-Billion-Year-Old Ocean Crust

April 24, 2013 5:53 PM

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Extreme Green: Earth Recycles 2.5-Billion-Year-Old Ocean Crust

The remains of a real-life journey to the center of the Earth are preserved in a South Pacific volcano, a new study suggests.

The lava that erupted from the Cook Islands volcano, called Mangaia, contains a few tiny grains of sulfide, a mineral, with a peculiar ratio of sulfur isotopes, according to research published in today's (April 24) issue of the journal Nature. The unusual ratio could only have formed before oxygen-b...

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