Phanerozoic cooling history of Archean/Paleoproterozoic basement in the southern Espinhaço Range, southeastern Brazil, through apatite fission-track analysis

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dc.contributor.authorAMARAL-SANTOS, E.pt_BR
dc.contributor.authorJELINEK, A.R.pt_BR
dc.contributor.authorALMEIDA-ABREU, P.A.pt_BR
dc.contributor.authorGENEZINI, F.A.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2019-12-19T12:30:10Z
dc.date.available2019-12-19T12:30:10Z
dc.date.issued2019pt_BR
dc.description.abstractApatite fission track thermochronology of basement rocks from the southern Espinhaço Range and Quadrilátero Ferrífero in southeastern Brazil unravels the tectonic history of this portion of the Brazilian Shield. The study area encompasses an Archean and Paleoproterozoic granitoid-gneiss basement, in the southern border of the São Francisco Craton, and an Archean to Paleo-Mesoproterozoic sedimentary cover. Apatite fission track ages (AFT) vary from 187 ± 18 to 91.8 ± 7.3 Ma and horizontal confined track lengths vary from 9.62 ± 1.81 μm to 12.85 ± 1.35 μm. Thermal history modeling shows an accelerated cooling episode starting in the Upper Devonian to Early Permian. After this event, quiescence lasted from 115 to 170 Ma. Apatite samples lack evidence of far-field effects from rifting and opening of the South Atlantic Ocean, and also evidence from alkaline and basaltic magmatism emplacement during Mesozoic-Cenozoic. The AFT thermochronometer remained undisturbed during Transminas mafic dyke swarm intrusion. Finally, the last cooling event in the Espinhaço Range- Quadrilátero Ferrífero basement records ascension to surface temperatures due to epeirogeny after new configurations of the Nazca, South American and African plates. A climatic origin for the ascension is supported by accentuated erosion rates, even though a weathering-prone phase is registered in weathering profiles.pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipIDCNPq: 303184/2017-5pt_BR
dc.format.extent1-13pt_BR
dc.identifier.citationAMARAL-SANTOS, E.; JELINEK, A.R.; ALMEIDA-ABREU, P.A.; GENEZINI, F.A. Phanerozoic cooling history of Archean/Paleoproterozoic basement in the southern Espinhaço Range, southeastern Brazil, through apatite fission-track analysis. <b>Journal of South American Earth Sciences</b>, v. 96, p. 1-13, 2019. DOI: <a href="https://dx.doi.org/10.1016/j.jsames.2019.102352">10.1016/j.jsames.2019.102352</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30463.
dc.identifier.doi10.1016/j.jsames.2019.102352pt_BR
dc.identifier.issn0895-9811pt_BR
dc.identifier.orcid0000-0002-6318-6805pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-6318-6805
dc.identifier.percentilfi37.250pt_BR
dc.identifier.percentilfiCiteScore59.00
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/30463
dc.identifier.vol96pt_BR
dc.relation.ispartofJournal of South American Earth Sciencespt_BR
dc.rightsopenAccesspt_BR
dc.subjectfission tracks
dc.subjectapatites
dc.subjecttectonics
dc.subjectgeologic history
dc.subjectsedimentary rocks
dc.subjectbrazil
dc.subjectsoils
dc.titlePhanerozoic cooling history of Archean/Paleoproterozoic basement in the southern Espinhaço Range, southeastern Brazil, through apatite fission-track analysispt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorFREDERICO ANTONIO GENEZINI
ipen.codigoautor2045
ipen.contributor.ipenauthorFREDERICO ANTONIO GENEZINI
ipen.date.recebimento19-12
ipen.identifier.fi1.704pt_BR
ipen.identifier.fiCiteScore2.5
ipen.identifier.ipendoc26483pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi1.500 - 2.999
ipen.range.percentilfi25.00 - 49.99
ipen.type.genreArtigo
relation.isAuthorOfPublication0c41d307-45a9-47c4-8281-5aa9ed46e6a4
relation.isAuthorOfPublication.latestForDiscovery0c41d307-45a9-47c4-8281-5aa9ed46e6a4
sigepi.autor.atividadeGENEZINI, F.A.:2045:310:Npt_BR
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