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Earliest microbially mediated pyrite oxidation in ~3.4 billion-year-old sediments

Abstract:

Pyrite (FeS2) oxidation in modern sedimentary environments is neither a purely chemical nor purely microbial process, but it is significantly enhanced by the activity of microorganisms that use reduced forms of iron and sulphur in their metabolisms. On the early Earth, where oxygen levels were thought to be <10-5 of the present atmospheric level and chemical oxidants scarce, such biological mediation may have been critical in the redox cycles of iron and sulphur. Here, we show that detrita...

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Publisher copy:
10.1016/j.epsl.2010.11.025

Authors


Saunders, M More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Kilburn, MR More by this author
Journal:
Earth and Planetary Science Letters
Volume:
301
Issue:
1-2
Pages:
393-402
Publication date:
2011-01-03
DOI:
ISSN:
0012-821X
URN:
uuid:729fac25-594f-4ae8-96ab-9450c77e6685
Source identifiers:
110362
Local pid:
pubs:110362

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