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News Release 09-209
Ancient Ocean Oxygen Production Began 100 Million Years Earlier than Thought
Even low concentrations of oxygen can have profound effects on ocean chemistry
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Scientists studied 2.5 billion-year-old sediments from under Australia's red-weathered hills.
Credit: Ariel Anbar, ASU
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Beneath the hills of western Australia, rocks revealed new evidence for early oxygen on Earth.
Credit: Ariel Anbar, ASU
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Scientists travel the back roads of western Australia to collect samples of rocks.
Credit: Ariel Anbar, ASU
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Tim Lyons looks at weathered outcrop samples overlying fresh shales collected by drilling.
Credit: Ariel Anbar, ASU
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The researchers' findings appear in the October 30 issue of Science magazine.
Credit: Copyright 2009 AAAS
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