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Evidence for microbial carbon and sulfur cycling in deeply buried ridge flank basalt

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Lever, M. A., Rouxel, O., Alt, J. C., Shimizu, N., Ono, S., Coggon, R. M., … Teske, A. (2013, March 14). Evidence for Microbial Carbon and Sulfur Cycling in Deeply Buried Ridge Flank Basalt. Science. American Association for the Advancement of Science (AAAS). https://doi.org/10.1126/science.1229240

Summary

Sediment-covered basalt on the flanks of mid-ocean ridges constitutes most of Earth's oceanic crust, but the composition and metabolic function of its microbial ecosystem are largely unknown. By drilling into 3.5-million-year-old subseafloor basalt, we demonstrated the presence of methane- and sulfur-cycling microbes on the eastern flank of the Juan de Fuca Ridge. Depth horizons with functional genes indicative of methane-cycling and sulfate-reducing microorganisms are enriched in solid-phase sulfur and total organic carbon, host δ13C- and δ34S-isotopic values with a biological imprint, and show clear signs of microbial activity when incubated in the laboratory. Downcore changes in carbon and sulfur cycling show discrete geochemical [...]

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Type Scheme Key
local-index unknown 70189244
local-pk unknown 70189244
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1126/science.1229240
series unknown Science

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journalScience
parts
typevolume
value339
typeissue
value6125
languageEnglish
citationTypeArticle

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