The sulfur isotopic consequence of seawater sulfate distillation preserved in the Neoproterozoic Sete Lagoas post-glacial carbonate, eastern Brazil

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorVirginia Tech-
Autor(es): dc.contributorUniv Maryland-
Autor(es): dc.contributorHRP Associates Inc-
Autor(es): dc.contributorUniversidade Federal da Bahia (UFBA)-
Autor(es): dc.contributorUniv Fed Parana-
Autor(es): dc.creatorOkubo, Juliana-
Autor(es): dc.creatorKaufman, Alan J.-
Autor(es): dc.creatorWarren, Lucas-
Autor(es): dc.creatorEvans, Michael N.-
Autor(es): dc.creatorMarroquin, Selva-
Autor(es): dc.creatorVarni, Michael A.-
Autor(es): dc.creatorMisi, Aroldo-
Autor(es): dc.creatorBahniuk, Anelize M.-
Autor(es): dc.creatorXiao, Shuhai-
Data de aceite: dc.date.accessioned2025-08-21T16:01:08Z-
Data de disponibilização: dc.date.available2025-08-21T16:01:08Z-
Data de envio: dc.date.issued2022-11-29-
Data de envio: dc.date.issued2022-11-29-
Data de envio: dc.date.issued2022-02-28-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1144/jgs2021-091-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/237722-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/237722-
Descrição: dc.descriptionSince the report of tubular structures interpreted as Cloudina from the Neoproterozoic Sete Lagoas Formation (SLF) in the Bambui basin of eastern Brazil, this stratigraphic unit has become a focus of numerous geochemical, palaeomagnetic, geochronological and sequence stratigraphic studies. Geochemical data from the SLF have been used to infer palaeoenvironmental conditions in the Bambui basin and to study the C-13 enrichment reported in this and overlying units. To further address depositional environments of the SLF, we present high-resolution delta C-13 and delta S-34 data from the SLF in the Januaria and Sete Lagoas regions. We report the presence of superheavy pyrite with delta S-34 value greater than carbonate-associated sulfate (CAS) and observe a decrease in CAS abundance coupled with a delta S-34 change from c. +20 to near +50 parts per thousand. These data are interpreted as evidence for distillation of sulfate through CAS and pyrite removal from the epeiric Bambui basin. These changes are qualitatively consistent with quantitative simulations of isotopic distillation over a period of c. 10 myr of a seawater sulfate reservoir comparable with modern concentration. Considering that Neoproterozoic seawater sulfate concentrations were probably much lower than in modern oceans, the distillation time interval was probably much shorter than 10 myr.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionNational Council for Scientific and Technological Development of Brazil-
Descrição: dc.descriptionPetrobras-
Descrição: dc.descriptionNASA Exobiology and Evolutionary Biology Program-
Descrição: dc.descriptionNational Science Foundation-
Descrição: dc.descriptionNational Aeronautics and Space Administration-
Descrição: dc.descriptionSao Paulo State Univ UNESP, Inst Geosci & Exact Sci, Dept Geol, BR-13506900 Rio Claro, SP, Brazil-
Descrição: dc.descriptionVirginia Tech, Dept Geosci, Blacksburg, VA 24061 USA-
Descrição: dc.descriptionUniv Maryland, Dept Geol, College Pk, MD 20742 USA-
Descrição: dc.descriptionUniv Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA-
Descrição: dc.descriptionHRP Associates Inc, 197 Scott Swamp Rd, Farmington, CT 06032 USA-
Descrição: dc.descriptionUniv Fed Bahia, Grp Metalogenese, Ctr Pesquisa & Posgrad Geofis & Geol, Campus Ondina Federacao, BR-40210340 Salvador, BA, Brazil-
Descrição: dc.descriptionUniv Fed Parana, LAMIR Inst, Dept Geol, BR-81531980 Curitiba, Parana, Brazil-
Descrição: dc.descriptionSao Paulo State Univ UNESP, Inst Geosci & Exact Sci, Dept Geol, BR-13506900 Rio Claro, SP, Brazil-
Descrição: dc.descriptionFAPESP: FAPESP 2015/07391-0-
Descrição: dc.descriptionFAPESP: 2017/19023-1-
Descrição: dc.descriptionFAPESP: 2018/26230-6-
Descrição: dc.descriptionNational Council for Scientific and Technological Development of Brazil: CNPq 444070/2014-1-
Descrição: dc.descriptionPetrobras: Sigitec 2014/-00519-9-
Descrição: dc.descriptionNASA Exobiology and Evolutionary Biology Program: 80NSSC18K1086-
Descrição: dc.descriptionNational Science Foundation: EAR-0126378-
Descrição: dc.descriptionNational Aeronautics and Space Administration: NAG512337-
Formato: dc.format23-
Idioma: dc.languageen-
Publicador: dc.publisherGeological Soc Publ House-
Relação: dc.relationJournal Of The Geological Society-
???dc.source???: dc.sourceWeb of Science-
Título: dc.titleThe sulfur isotopic consequence of seawater sulfate distillation preserved in the Neoproterozoic Sete Lagoas post-glacial carbonate, eastern Brazil-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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