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Comment
. 2008 Mar 7;319(5868):1336; author reply 1336.
doi: 10.1126/science.1151241.

Comment on "Early Archaean microorganisms preferred elemental sulfur, not sulfate"

Huiming Bao  1 , Tao Sun, Issaku Kohl, Yongbo Peng
Affiliations
Comment

Comment on "Early Archaean microorganisms preferred elemental sulfur, not sulfate"

Huiming Bao et al. Science. .

Abstract

Philippot et al. (Reports, 14 September 2007, p. 1534) interpreted multiple-sulfur isotopic compositions of approximately 3.5-billion-year-old marine sulfide deposits as evidence that early Archaean microorganisms were not sulfate reducers but instead metabolized elemental sulfur. However, their data can be better explained by a scenario involving poor mixing of photochemical and surface sulfide sources.

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