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Early Archaean microorganisms preferred elemental sulfur, not sulfate; reply
Article de revue   Avec comité de lecture

Early Archaean microorganisms preferred elemental sulfur, not sulfate; reply

Pascal Philippot, Mark van Zuilen, Kevin Lepot, Christophe Thomazo, James Farquhar et Martin J. Van Kranendonk
Science (American Association for the Advancement of Science), Vol.319(5868), p.1336
07/03/2008
DOI: https://doi.org/10.1126/science.1151414

Résumé

Archean Arctic region barite Dresser Formation geochemical cycle geochemistry Isotope geochemistry isotope ratios isotopes microorganisms North Pole Paleoarchean Precambrian pyrite S-33/S-32 S-34/S-32 stable isotopes Stratigraphy sulfates sulfides sulfur
Our knowledge of the sulfur cycle on early Earth is still in its infancy. Nevertheless, there exist enough geochemical constraints from the rock record to show that the theoretical mixing models proposed by Bao et al. are highly unlikely to account for the range of delta (super 34) S and Delta (super 33) S values recorded for the microscopic sulfides at the North Pole.

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