Microbial Sulfur Metabolism and the History of Earths Oxygenation revealed by Multiple Sulfur Isotopes
Multiple sulfur isotopes reveal a profound change in the global sulfur cycle with a prominent atmospheric component during Archean and early Paleoproterozoic time (pre-2.4 Ga), followed by a modern-style sulfur cycle dominated by oxidative continental weathering, increasing oceanic sulfate abundance and subsequent intensification of microbial sulfur cycling in the marine realm. Yet, different forms of microbial sulfur cycling can be reconstructed as early as 3.5 Ga ago, based on the sulfur isotope record.
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Microbial Sulfur Metabolism and the History of Earths Oxygenation revealed by Multiple Sulfur Isotopes
Speaker
Harald Strauß
(
Institut für Geologie und Paläontologie Westfälische Wilhelms-Univ. Münster)
Abstract
Multiple sulfur isotopes reveal a profound change in the global sulfur cycle with a prominent atmospheric component during Archean and early Paleoproterozoic time (pre-2.4 Ga), followed by a modern-style sulfur cycle dominated by oxidative continental weathering, increasing oceanic sulfate abundance and subsequent intensification of microbial sulfur cycling in the marine realm. Yet, different forms of microbial sulfur cycling can be reconstructed as early as 3.5 Ga ago, based on the sulfur isotope record.
