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dc.contributor.authorPaiste, Kärt
dc.contributor.authorPellerin, André
dc.contributor.authorZerkle, A.L.
dc.contributor.authorKirsimäe, K.
dc.contributor.authorPrave, A.R.
dc.contributor.authorRomashkin, A.E
dc.contributor.authorLepland, Aivo
dc.date.accessioned2020-01-31T11:27:15Z
dc.date.available2020-01-31T11:27:15Z
dc.date.issued2020-01-21
dc.description.abstractThe pyrite sulfur isotope record of the 1.98 Ga Zaonega Formation in the Onega Basin, NW Russia, has played a central role in understanding ocean-atmosphere composition and inferring worldwide fluctuations of the seawater sulfate reservoir during the pivotal times of the Paleoproterozoic Era. That, in turn, has led to a concept that Earth's atmospheric oxygen levels underwent global-scale changes. Here we present a steady-state isotope mass-balance model to gain insight into the mechanisms governing the sulfur cycle and sulfate reservoir during deposition of the organic-rich Zaonega Formation. We demonstrate that coupling between high microbial sulfate reduction rates and effective sulfate removal by pyrite precipitation can lead to Rayleigh distillation of the basinal sulfate reservoir and development of high amplitude positive δ<sup>34</sup>S excursions. This modelling approach illustrates that secular changes in sedimentary pyrite isotope trends can be explained by processes that reflect local (basin-scale) fluctuations in sulfur cycling rather than global mechanisms.en_US
dc.descriptionAccepted manuscript version, licensed <a href=http://creativecommons.org/licenses/by-nc-nd/4.0/> CC BY-NC-ND 4.0. </a>en_US
dc.identifier.citationPaiste, Pellerin A, Zerkle A, Kirsimäe K, Prave A, Romashkin A, Lepland A. The pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation: Evidence for biogeochemical sulfur cycling in a semi-restricted basin. Earth and Planetary Science Letters. 2020;15:1-10en_US
dc.identifier.cristinIDFRIDAID 1785827
dc.identifier.doi10.1016/j.epsl.2020.116092
dc.identifier.issn0012-821X
dc.identifier.issn1385-013X
dc.identifier.urihttps://hdl.handle.net/10037/17283
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalEarth and Planetary Science Letters
dc.relation.projectIDNorges forskningsråd: 223259en_US
dc.relation.projectIDAndre: MOBJD542en_US
dc.relation.projectIDAndre: PRG447en_US
dc.relation.projectIDAndre: NE/J023485/2.en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holder©2020 Elsevier B.V. All rights reserved.en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.titleThe pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation: Evidence for biogeochemical sulfur cycling in a semi-restricted basinen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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