Sulfate is the most abundant electron acceptor in the ocean today. A large fraction of the buried organic matter in marine sediments is re-mineralized through microbial sulfate reduction (MSR) during which the sulfate is reduced to H2S (Jørgensen 1982; Kasten and Jørgensen 2000). The H2S can be re-oxidized to sulfate or buried as pyrite in sediments (Jørgensen 1977). The burial of pyrite ultimately contributes to the rising of atmosphere O2 concentration (Berner and Canfield 1989). Sulfate, meanwhile, can be buried as gypsum and anhydrite in evaporites (Claypool...
Small Triple Oxygen Isotope Variations in Sulfate: Mechanisms and Applications
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Xiaobin Cao, Huiming Bao; Small Triple Oxygen Isotope Variations in Sulfate: Mechanisms and Applications. Reviews in Mineralogy and Geochemistry 2021;; 86 (1): 463–488. doi: https://doi.org/10.2138/rmg.2021.86.14
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