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dc.contributor.authorBorrelli, Chiara
dc.contributor.authorGabitov, R.I.
dc.contributor.authorLiu, M.-C.
dc.contributor.authorHertwig, A.T.
dc.contributor.authorPanieri, Giuliana
dc.date.accessioned2020-01-30T11:34:21Z
dc.date.available2020-01-30T11:34:21Z
dc.date.issued2020-01-28
dc.description.abstractIn modern environments, pore water geochemistry and modelling simulations allow the study of methane (CH<sub>4</sub>) sources and sinks at any geographic location. However, reconstructing CH<sub>4</sub> dynamics in geological records is challenging. Here, we show that the benthic foraminiferal δ<sup>34</sup>S can be used to reconstruct the fux (i.e., difusive vs. advective) and timing of CH<sub>4</sub> emissions in fossil records. We measured the δ<sup>34</sup>S of <i>Cassidulina neoteretis</i> specimens from selected samples collected at Vestnesa Ridge, a methane cold seep site in the Arctic Ocean. Our results show lower benthic foraminiferal δ<sup>34</sup>S values (∼20‰) in the sample characterized by seawater conditions, whereas higher values (∼25–27‰) were measured in deeper samples as a consequence of the presence of past sulphate-methane transition zones. The correlation between δ<sup>34</sup>S and the bulk benthic foraminiferal δ<sup>13</sup>C supports this interpretation, whereas the foraminiferal δ<sup>18</sup>O-δ<sup>34</sup>S correlation indicates CH<sub>4</sub> advection at the studied site during the Early Holocene and the Younger-Dryas – post-Bølling. This study highlights the potential of the benthic foraminiferal δ<sup>34</sup>S as a novel tool to reconstruct the fux of CH<sub>4</sub> emissions in geological records and to indirectly date fossil seeps.en_US
dc.identifier.citationBorrelli, Gabitov, Liu, Hertwig, Panieri G. The benthic foraminiferal δ34S records fux and timing of paleo methane emissions. Scientific Reports. 2020(10)en_US
dc.identifier.cristinIDFRIDAID 1784350
dc.identifier.doi10.1038/s41598-020-58353-4
dc.identifier.issn2045-2322
dc.identifier.urihttps://hdl.handle.net/10037/17274
dc.language.isoengen_US
dc.publisherNature Researchen_US
dc.relation.journalScientific Reports
dc.relation.projectIDAndre: NSF (EAR-1339051 and EAR-1734856)en_US
dc.relation.projectIDNorges forskningsråd: 223259en_US
dc.relation.projectIDNorges forskningsråd: 255150en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/PETROMAKS2/255150/Norway/Norwegian margin fluid systems and methane- derived carbonate crusts - Recent scientific advances in service of petroleum exploration/NORCRUST/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.titleThe benthic foraminiferal δ34S records fux and timing of paleo methane emissionsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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