Content with the tag: “proterozoic”
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Microbial Sulfur Disproportionation and Accelerated Oxygenation at Earth's Surface
Researchers from NAI’s Carnegie Institution of Washington Lead Team published a study in this week’s Science using high-precision measurements of a rare sulfur isotope, 33S, to establish that microbial sulfur disproportionation was in place almost half a billion years earlier than previously thought. This could imply that Earth’s surface may have become progressively more oxygenated during the middle Proterozoic.
Source: [Link]
December 6, 2005 / Posted by: Shige Abe
Sulfur biogeochemistry of the Early Earth
ROADMAP OBJECTIVES: 1.1, 1.2, 4.1, 4.2, 5.1, 5.2, 5.3, 6.1, 7.1, 7.2
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