Cryogenian glaciostatic and eustatic fluctuations and massive Marinoan-related deposition of Fe and Mn in the Urucum District, Brazil

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Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorUniversidade Federal de Ouro Preto-
Autor(es): dc.contributorInstituto de Geociências-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorFreitas, B. T.-
Autor(es): dc.creatorRudnitzki, I. D.-
Autor(es): dc.creatorMorais, L.-
Autor(es): dc.creatorCampos, M. D.R.-
Autor(es): dc.creatorAlmeida, R. P.-
Autor(es): dc.creatorWarren, L. V.-
Autor(es): dc.creatorBoggiani, P. C.-
Autor(es): dc.creatorCaetano-Filho, S.-
Autor(es): dc.creatorBedoya-Rueda, C.-
Autor(es): dc.creatorBabinski, M.-
Autor(es): dc.creatorFairchild, T. R.-
Autor(es): dc.creatorTrindade, R. I.F.-
Data de aceite: dc.date.accessioned2025-08-21T18:00:54Z-
Data de disponibilização: dc.date.available2025-08-21T18:00:54Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2021-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1130/G49134.1-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/222880-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/222880-
Descrição: dc.descriptionGlobal Neoproterozoic glaciations are related to extreme environmental changes and the reprise of iron formation in the rock record. However, the lack of narrow age constraints on Cryogenian successions bearing iron-formation deposits prevents correlation and understanding of these deposits on a global scale. Our new multiproxy data reveal a long Cryogenian record for the Jacadigo Group (Urucum District, Brazil) spanning the Sturtian and Marinoan ice ages. Deposition of the basal sequence of the Urucum Formation was influenced by Sturtian continental glaciation and was followed by a transgressive interglacial record of >600 m of carbonates that terminates in a glacioeustatic unconformity. Overlying this, there are up to 500 m of shale and sandstone interpreted as coeval to global Marinoan glacial advance. Glacial outwash delta deposits at the top of the formation correlate with diamictite-filled pa-leovalleys and are covered by massive Fe and Mn deposits of the Santa Cruz Formation and local carbonate. This second transgression is related to Marinoan deglaciation. Detrital zircon provenance supports glaciostatic control on Cryogenian sedimentary yield at the margins of the Amazon craton. These findings reveal the sedimentary response to two marked events of glacioeustatic incision and transgression, culminating in massive banded iron deposition during the Marinoan cryochron.-
Descrição: dc.descriptionFaculdade de Tecnologia Universidade de Campinas-
Descrição: dc.descriptionDepartamento de Geología Universidade Federal de Ouro Preto-
Descrição: dc.descriptionInstituto de Geociências-
Descrição: dc.descriptionInstituto de Astronomía Geofísica e Ciências Atmosféricas Universidade de São Paulo-
Descrição: dc.descriptionDepartamento de Geologia Universidade Estadual Paulista-
Descrição: dc.descriptionDepartamento de Geologia Universidade Estadual Paulista-
Formato: dc.format1478-1483-
Idioma: dc.languageen-
Relação: dc.relationGeology-
???dc.source???: dc.sourceScopus-
Título: dc.titleCryogenian glaciostatic and eustatic fluctuations and massive Marinoan-related deposition of Fe and Mn in the Urucum District, Brazil-
Tipo de arquivo: dc.typelivro digital-
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