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Underground Rocks may Turn Carbondioxide into Harmless Chemical

Posted on Monday, March 9, 2009 posted by posted by Mak @ 9:34 PM

Geologists have mapped large rock formations in the US that can absorb carbon dioxide and potentially be harnessed to vastly accelerate the process.The report, by scientists at Columbia University's Earth Institute and the US Geological Survey, shows 15,000 square km of ultramafic rocks at or near the surface. Originating deep in the earth, these rocks contain minerals that react naturally with carbon dioxide to form solid minerals. Earth Institute scientists are experimenting with ways to speed this natural process, called mineral carbonation.If the technology takes off, geologic formations around the world could provide a vast sink for heat-trapping carbon dioxide released by humans.

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