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Saturday, November 26, 2011

Oxygen '2.48 Billion Years Old'

An international team says that banded ironstone core samples from the Pilbara rocks in Australia have aided in dating the first appearance of atmospheric oxygen at 2.48 billion years ago.

Prof Mark Barley, who led the team, says their findings, published in the ‘Nature’ journal. rested on the reliability of the rock samples they used as evidenc

From: http://ping.fm/90HlP

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