Sedimentary provenance and role of tectonic inheritance on the control of the Macaúbas group, eastern margin of São Francisco Craton (SE Brazil).

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dc.contributor.authorOliveira, Rosana Gonçalves
dc.contributor.authorMartins, Maximiliano de Souza
dc.contributor.authorQueiroga, Gláucia Nascimento
dc.contributor.authorSouza, Maria Eugênia Silva de
dc.contributor.authorLana, Cristiano de Carvalho
dc.contributor.authorAlkmim, Ana Ramalho
dc.contributor.authorSilva, Marco Antônio Leandro da
dc.contributor.authorBueno, Cássio
dc.contributor.authorLinhares, Davidson
dc.date.accessioned2022-09-14T19:38:21Z
dc.date.available2022-09-14T19:38:21Z
dc.date.issued2021pt_BR
dc.description.abstractThe Neoproterozoic Macaúbas Group represents the precursor basin system of the Araçuaí–West Congo orogen, located in the southern margin of Sao ̃ Francisco Craton, and records a Tonian volcano-sedimentary succession, at the base, overlain by a Cryogenian sequence related to the Neoproterozoic global glacial event. Detailed strat- igraphic surveys along the Tonian units allowed the identification of two lithofacies associations related to al- luvial fan and braided river environments, while the three Cryogenian lithofacies associations indicate a glaciomarine environment associated with extensive tectonics that has evolved into a marine environment. The results show that the age spectra of the Tonian and Cryogenian units are similar, differing mainly for an increased peak in the Cryogenian sample in ca. 1.0 Ga, where the primary source is probably related to those magmatic rocks associated with the Stenian-Tonian extensional breakup of the Sao ̃ Francisco-Congo paleocontinent. The KS-Test shows that not all the Tonian samples are similar to each other, as in all the Cryogenian samples. The detailed stratigraphic and structural surveys associated with the geochronological U–Pb data allow us to interpret that the Tonian and the basal Cryogenian sequences were deposited in two episodes of an active intracontinental tectonic context related to fault reactivations along the WNW-ESE Pirapora aulacogen structures in superimposed basin-cycles, the middle-to late-Cryogenian sequences extrapolated the WNW-ESE boundaries while the basin local depocenter and its surroundings expanded to a large depocenter during the basin evolution.pt_BR
dc.identifier.citationOLIVEIRA, R. G. et al. Sedimentary provenance and role of tectonic inheritance on the control of the Macaúbas group, eastern margin of São Francisco Craton (SE Brazil). Journal of South American Earth Sciences, v. 109, 2021. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0895981121000572?via%3Dihub>. Acesso em: 29 abr. 2022.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jsames.2021.103210pt_BR
dc.identifier.issn0895-9811
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/15270
dc.identifier.uri2https://www.sciencedirect.com/science/article/pii/S0895981121000572?via%3Dihubpt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectU–Pb geochronologypt_BR
dc.subjectCawood diagrampt_BR
dc.subjectKS-Testpt_BR
dc.subjectMacaúbas basinpt_BR
dc.titleSedimentary provenance and role of tectonic inheritance on the control of the Macaúbas group, eastern margin of São Francisco Craton (SE Brazil).pt_BR
dc.typeArtigo publicado em periodicopt_BR
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