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- Virgil Pasquier
- Laboratoire Géosciences Océan, UMR CNRS-6538, Institut Universitaire Européen de la Mer, Université Bretagne Occidentale, 29280 Plouzane, France;
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- Pierre Sansjofre
- Laboratoire Géosciences Océan, UMR CNRS-6538, Institut Universitaire Européen de la Mer, Université Bretagne Occidentale, 29280 Plouzane, France;
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- Marina Rabineau
- Laboratoire Géosciences Océan, UMR CNRS-6538, Institut Universitaire Européen de la Mer, Université Bretagne Occidentale, 29280 Plouzane, France;
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- Sidonie Revillon
- Laboratoire Géosciences Océan, UMR CNRS-6538, Institut Universitaire Européen de la Mer, Université Bretagne Occidentale, 29280 Plouzane, France;
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- Jennifer Houghton
- Department of Earth and Planetary Sciences, Washington University in St. Louis, St. Louis, MO 63130
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- David A. Fike
- Department of Earth and Planetary Sciences, Washington University in St. Louis, St. Louis, MO 63130
書誌事項
- 公開日
- 2017-05-22
- DOI
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- 10.1073/pnas.1618245114
- 公開者
- Proceedings of the National Academy of Sciences
この論文をさがす
説明
<jats:title>Significance</jats:title> <jats:p> Changes in sulfur isotope ratios ( <jats:sup>34</jats:sup> S/ <jats:sup>32</jats:sup> S) of marine sulfur phases are often attributed to global biogeochemical perturbations. Sediments collected on the shelf of the Gulf of Lion revealed remarkable sulfur isotopic fluctuations in sedimentary pyrite over the last 500,000 years, ranging between −44.0‰ and 32.3‰. We suggest this pattern is related to changes in the local environmental deposition, specifically, sedimentation modulating connectivity with the overlying water column and resulting microbial activity. Besides providing new understanding of an important and poorly constrained aspect of past glacial−interglacial transitions, our results are critically important because they question the degree to which changes in sulfur isotopes in pyrite reflect global biogeochemical processes versus local depositional conditions. </jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 114 (23), 5941-5945, 2017-05-22
Proceedings of the National Academy of Sciences