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Sulphur and carbon isotopes as tracers of past sub-seafloor microbial activity

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Sulphur and carbon isotopes as tracers of past sub-seafloor microbial activity. / Meister, Patrick; Brunner, Benjamin; Picard, Aude; Böttcher, Michael E.; Jørgensen, Bo Barker.

I: Scientific Reports, Bind 9, Nr. 1, 604, 2019.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Meister, P, Brunner, B, Picard, A, Böttcher, ME & Jørgensen, BB 2019, 'Sulphur and carbon isotopes as tracers of past sub-seafloor microbial activity', Scientific Reports, bind 9, nr. 1, 604. https://doi.org/10.1038/s41598-018-36943-7

APA

Meister, P., Brunner, B., Picard, A., Böttcher, M. E., & Jørgensen, B. B. (2019). Sulphur and carbon isotopes as tracers of past sub-seafloor microbial activity. Scientific Reports, 9(1), [604]. https://doi.org/10.1038/s41598-018-36943-7

CBE

Meister P, Brunner B, Picard A, Böttcher ME, Jørgensen BB. 2019. Sulphur and carbon isotopes as tracers of past sub-seafloor microbial activity. Scientific Reports. 9(1):Article 604. https://doi.org/10.1038/s41598-018-36943-7

MLA

Vancouver

Author

Meister, Patrick ; Brunner, Benjamin ; Picard, Aude ; Böttcher, Michael E. ; Jørgensen, Bo Barker. / Sulphur and carbon isotopes as tracers of past sub-seafloor microbial activity. I: Scientific Reports. 2019 ; Bind 9, Nr. 1.

Bibtex

@article{2aa6b696daff44729c14f44f6c98a71b,
title = "Sulphur and carbon isotopes as tracers of past sub-seafloor microbial activity",
abstract = "Microbial life below the seafloor has changed over geological time, but these changes are often not obvious, as they are not recorded in the sediment. Sulphur (S) isotope values in pyrite extracted from a Plio- to Holocene sequence of the Peru Margin (Ocean Drilling Program, ODP, Site 1229) show a down-core pattern that correlates with the pattern of carbon (C) isotopes in diagenetic dolomite. Early formation of the pyrite is indicated by the mineralogical composition of iron, showing a high degree of pyritization throughout the sedimentary sequence. Hence, the S-record could not have been substantially overprinted by later pyrite formation. The S- and C-isotope profiles show, thus, evidence for two episodes of enhanced microbial methane production with a very shallow sulphate-methane transition zone. The events of high activity are correlated with zones of elevated organic C content in the stratigraphic sequence. Our results demonstrate how isotopic signatures preserved in diagenetic mineral phases provide information on changes of past biogeochemical activity in a dynamic sub-seafloor biosphere.",
author = "Patrick Meister and Benjamin Brunner and Aude Picard and B{\"o}ttcher, {Michael E.} and J{\o}rgensen, {Bo Barker}",
year = "2019",
doi = "10.1038/s41598-018-36943-7",
language = "English",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",

}

RIS

TY - JOUR

T1 - Sulphur and carbon isotopes as tracers of past sub-seafloor microbial activity

AU - Meister, Patrick

AU - Brunner, Benjamin

AU - Picard, Aude

AU - Böttcher, Michael E.

AU - Jørgensen, Bo Barker

PY - 2019

Y1 - 2019

N2 - Microbial life below the seafloor has changed over geological time, but these changes are often not obvious, as they are not recorded in the sediment. Sulphur (S) isotope values in pyrite extracted from a Plio- to Holocene sequence of the Peru Margin (Ocean Drilling Program, ODP, Site 1229) show a down-core pattern that correlates with the pattern of carbon (C) isotopes in diagenetic dolomite. Early formation of the pyrite is indicated by the mineralogical composition of iron, showing a high degree of pyritization throughout the sedimentary sequence. Hence, the S-record could not have been substantially overprinted by later pyrite formation. The S- and C-isotope profiles show, thus, evidence for two episodes of enhanced microbial methane production with a very shallow sulphate-methane transition zone. The events of high activity are correlated with zones of elevated organic C content in the stratigraphic sequence. Our results demonstrate how isotopic signatures preserved in diagenetic mineral phases provide information on changes of past biogeochemical activity in a dynamic sub-seafloor biosphere.

AB - Microbial life below the seafloor has changed over geological time, but these changes are often not obvious, as they are not recorded in the sediment. Sulphur (S) isotope values in pyrite extracted from a Plio- to Holocene sequence of the Peru Margin (Ocean Drilling Program, ODP, Site 1229) show a down-core pattern that correlates with the pattern of carbon (C) isotopes in diagenetic dolomite. Early formation of the pyrite is indicated by the mineralogical composition of iron, showing a high degree of pyritization throughout the sedimentary sequence. Hence, the S-record could not have been substantially overprinted by later pyrite formation. The S- and C-isotope profiles show, thus, evidence for two episodes of enhanced microbial methane production with a very shallow sulphate-methane transition zone. The events of high activity are correlated with zones of elevated organic C content in the stratigraphic sequence. Our results demonstrate how isotopic signatures preserved in diagenetic mineral phases provide information on changes of past biogeochemical activity in a dynamic sub-seafloor biosphere.

UR - http://www.scopus.com/inward/record.url?scp=85060524683&partnerID=8YFLogxK

U2 - 10.1038/s41598-018-36943-7

DO - 10.1038/s41598-018-36943-7

M3 - Journal article

C2 - 30679710

AN - SCOPUS:85060524683

VL - 9

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 604

ER -