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#263158
Thu 06 Nov 2014 07:37:PM
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Joined: Feb 2001
Posts: 381,903
Launch Director
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OP
Launch Director
Joined: Feb 2001
Posts: 381,903 |
Biogeochemical signals in 2.5-billion-year-old carbonate rocks from Brazil reveal that sulfur-consuming bacteria were active at a time when ocean sulfur levels were low. Geologists focused on sulfur isotopes in ancient carbonate rocks. The study sheds light on Earth's early atmospheric chemistry.  Source: Rare 2.5-billion-year-old rocks rev...r-dependent life forms thrived in oceans
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