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dc.contributor.authorKarl, Markus-
dc.contributor.authorGlasmacher, Ulrich A.-
dc.contributor.authorKollenz, Sebastian-
dc.contributor.authorFranco-Magalhaes, Ana O.B.-
dc.contributor.authorStockli, Daniel F.-
dc.contributor.authorHackspacher, Peter C.-
dc.date.accessioned2014-05-27T11:30:44Z-
dc.date.accessioned2016-10-25T18:54:20Z-
dc.date.available2014-05-27T11:30:44Z-
dc.date.available2016-10-25T18:54:20Z-
dc.date.issued2013-09-24-
dc.identifierhttp://dx.doi.org/10.1016/j.tecto.2013.06.017-
dc.identifier.citationTectonophysics, v. 604, p. 224-244.-
dc.identifier.issn0040-1951-
dc.identifier.urihttp://hdl.handle.net/11449/76630-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/76630-
dc.description.abstractThe area between São Paulo and Porto Alegre in southeastern Brazil plays a key area to understand and quantify the evolution of the South Atlantic passive continental margin (SAPCM) in Brazil. In this contribution, we present new thermochronological data attained by fission-track and (U-Th-Sm)/He analysis on apatites and zircons from metamorphic, sedimentary and intrusive rocks. The zircon fission-track ages range between 108.4 (15.0) and 539.9 (68.4). Ma, the zircon (U-Th-Sm)/He ages between 72.9 (5.8) and 525.1(2.4). Ma, whereas the apatite fission-track ages range between 40.0 (5.3) and 134.7 (8.0). Ma, and the apatite (U-Th-Sm)/He ages between 32.1 (1.5) and 93.0 (2.5). Ma. The spatial distribution of these ages shows three distinct blocks with a different evolution cut by old fracture zones. While the central block exhibits an old stable block, the Northern and especially the Southern block underwent complex post-rift exhumation. The sample of the Northern block shows two distinct cooling phases in the Upper Cretaceous and the Paleogene to Neogene. After sedimentation of the Permian sandstones the samples of the Central block were never heated up over 100. °C with a following moderate to fast cooling phase in Cretaceous to Eocene time and a fast cooling between Oligocene to Miocene. The five thermal models obtained in the Southern block indicate a complex evolution with three cooling phases. The exhumation events of the three blocks correspond with the Paraná-Etendekka event, the alkaline intrusions due to the Trinidad hotspot, and the evolution of the continental rift basins in SE Brazil and are, therefore, most likely to be the major force for the post-rift evolution of the passive continental margin in SE Brazil, which therefore corresponds to the three main phases of the Andean orogeny. © 2013 Elsevier B.V.en
dc.format.extent224-244-
dc.language.isoeng-
dc.sourceScopus-
dc.subject(U-Th-Sm)/He-
dc.subjectFission-track-
dc.subjectLow-temperature thermochronology-
dc.subjectPost-rift exhumation history-
dc.subjectReactivation-
dc.subjectSoutheastern Brazil-
dc.subjectFission track-
dc.subjectThermochronology-
dc.subjectApatite-
dc.subjectGeologic models-
dc.subjectMetamorphic rocks-
dc.subjectRings (components)-
dc.subjectSedimentary rocks-
dc.subjectTectonics-
dc.subjectZircon-
dc.subjectFission reactions-
dc.subjectAndean orogeny-
dc.subjectcontinental margin-
dc.subjectCretaceous-
dc.subjectexhumation-
dc.subjectfission track dating-
dc.subjectpassive margin-
dc.subjecttectonic evolution-
dc.subjectthermochronology-
dc.subjectBrazil-
dc.subjectPorto Alegre-
dc.subjectRio Grande do Sul-
dc.subjectSao Paulo [Brazil]-
dc.titleEvolution of the South Atlantic passive continental margin in southern Brazil derived from zircon and apatite (U-Th-Sm)/He and fission-track dataen
dc.typeoutro-
dc.contributor.institutionUniversity of Heidelberg-
dc.contributor.institutionPequisa e Extensão, Praça Tereza Cristina-
dc.contributor.institutionThe University of Texas-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationInstitute of Earth Sciences University of Heidelberg, Im Neuenheimer Feld 234, 69120 Heidelberg-
dc.description.affiliationUniversidade Guarulhos, CEPPE Centro do Pós-Graduação Pequisa e Extensão, Praça Tereza Cristina, 229, Centro, 07011-040, Guarulhos, SP-
dc.description.affiliationDepartment of Geological Sciences Jackson School of Geosciences The University of Texas, 2275 Speedway Stop C9000, Austin, TX 78712-1722-
dc.description.affiliationDepartamento de Petrologia e Metalogenia Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista, Av. 24-A, 1515, Bela Vista, 13506-900 Rio Claro, SP-
dc.description.affiliationUnespDepartamento de Petrologia e Metalogenia Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista, Av. 24-A, 1515, Bela Vista, 13506-900 Rio Claro, SP-
dc.identifier.doi10.1016/j.tecto.2013.06.017-
dc.identifier.wosWOS:000325839900015-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofTectonophysics-
dc.identifier.scopus2-s2.0-84884412922-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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