Isotopic evidence for microbial sulphate reduction in the early Archaean era

@article{Shen2001IsotopicEF,
  title={Isotopic evidence for microbial sulphate reduction in the early Archaean era},
  author={Y. Shen and R. Buick and D. Canfield},
  journal={Nature},
  year={2001},
  volume={410},
  pages={77-81}
}
  • Y. Shen, R. Buick, D. Canfield
  • Published 2001
  • Chemistry, Medicine
  • Nature
  • Sulphate-reducing microbes affect the modern sulphur cycle, and may be quite ancient, though when they evolved is uncertain. These organisms produce sulphide while oxidizing organic matter or hydrogen with sulphate. At sulphate concentrations greater than 1 mM, the sulphides are isotopically fractionated (depleted in 34S) by 10–40‰ compared to the sulphate, with fractionations decreasing to near 0‰ at lower concentrations. The isotope record of sedimentary sulphides shows large fractionations… CONTINUE READING
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