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Boswell Wing

Mining ancient ores for clues to early life

Scientists probe Canadian sulfide ore to confirm microbial activity in seawater 2.7 billion years ago
Mon, 2012-12-10 12:48

An analysis of sulfide ore deposits from one of the world’s richest base-metal mines confirms that oxygen levels were extremely low on Earth 2.7 billion years ago, but also shows that microbes were actively feeding on sulfate in the ocean and influencing seawater chemistry during that geological time period.

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