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dc.contributor.authorPaiste, K.
dc.contributor.authorPellerin, A.
dc.contributor.authorZerkle, Aubrey Lea
dc.contributor.authorKirsimäe, K.
dc.contributor.authorPrave, Tony
dc.contributor.authorRomashkin, A. E.
dc.contributor.authorLepland, A.
dc.identifier.citationPaiste , K , Pellerin , A , Zerkle , A L , Kirsimäe , K , Prave , T , Romashkin , A E & Lepland , A 2020 , ' 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 , vol. 534 , 116092 .
dc.identifier.otherPURE: 265752208
dc.identifier.otherPURE UUID: ca4bf2c5-a00b-4cd1-973e-fbda9e88bb6a
dc.identifier.otherORCID: /0000-0002-4614-3774/work/67919216
dc.identifier.otherORCID: /0000-0003-2324-1619/work/67919868
dc.identifier.otherScopus: 85078029053
dc.identifier.otherWOS: 000515198200014
dc.descriptionThe research is part of the Centre for Arctic Gas Hydrate, Environment and Climate and was supported by the Research Council of Norway through its Centres of Excellence funding scheme grant No. 223259. A. L. Z. acknowledges support from a Natural Environment Council Standard Grant NE/J023485/2. K. K and A. L. were supported by the Estonian Science Agency grant PRG447 and Estonian Center of Analytical Chemistry. K. P. was supported by the European Regional Development Fund and the programme Mobilitas Pluss grant MOBJD542.en
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 infering 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 δ34S 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.
dc.relation.ispartofEarth and Planetary Science Lettersen
dc.rightsCopyright © 2020 Elsevier B.V. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectSulfur isotope fractionationen
dc.subjectSulfur cycleen
dc.subjectMass-balance modelen
dc.subjectGE Environmental Sciencesen
dc.titleThe pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation : evidence for biogeochemical sulfur cycling in a semi-restricted basinen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.St Andrews Centre for Exoplanet Scienceen
dc.contributor.institutionUniversity of St Andrews.School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews.St Andrews Isotope Geochemistryen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews.Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews.St Andrews Sustainability Instituteen
dc.description.statusPeer revieweden

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