The Start of Sulfur Oxidation in Continental Environments: About 2.2 x 109 Years Ago

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Science  05 Aug 1983:
Vol. 221, Issue 4610, pp. 549-551
DOI: 10.1126/science.221.4610.549


Whereas dissimilatory sulfate reduction in marine environments has been postulated on the basis of sulfur isotope abundances as commencing before about 2.8 x 109 years ago, data from the Huronian Supergroup, Canada, suggest that oxidative-reductive reactions involving sulfur in continental environments were not significant before about 2.2 x 109 years ago.