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Comment
. 2006 Jan 13;311(5758):177; author reply 177.
doi: 10.1126/science.311.5758.177.

Comment on "Iron isotope constraints on the Archean and Paleoproterozoic ocean redox state"

Kosei E Yamaguchi  1 , Hiroshi Ohmoto
Affiliations
Comment

Comment on "Iron isotope constraints on the Archean and Paleoproterozoic ocean redox state"

Kosei E Yamaguchi et al. Science. .

Abstract

Rouxel et al. (Reports, 18 February 2005, p. 1088) argued that changes in the iron isotopic composition of sedimentary sulfides reflect changes in the oxidation state of the atmosphere-ocean system between 2.3 and 1.8 million years ago. We show that misinterpretations of the origins of these minerals undermine their conclusions.

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