THE TECTONO-MAGMATIC EVOLUTION OF THE OCCIDENTAL TERRANE AND THE PARAÍBA DO SUL KLIPPE WITHIN THE NEOPROTEROZOIC RIBEIRA OROGENIC BELT, SOUTHEASTERN BRAZIL

THE TECTONO-MAGMATIC EVOLUTION OF THE OCCIDENTAL TERRANE AND THE PARAÍBA DO SUL KLIPPE WITHIN THE NEOPROTEROZOIC RIBEIRA OROGENIC BELT, SOUTHEASTERN BRAZIL

dc.contributoren-US
dc.contributorpt-BR
dc.creatorVALLADARES, CLAUDIA SAYÃO
dc.creatorDUARTE, BEATRIZ PASCHOAL
dc.creatorHEILBRON, MONICA
dc.creatorRAGATKY, DIANA
dc.date2017-04-13
dc.date.accessioned2023-06-19T16:28:08Z
dc.date.available2023-06-19T16:28:08Z
dc.identifierhttps://ppegeo.igc.usp.br/index.php/rbg/article/view/10859
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/6693804
dc.descriptionThe Occidental Terrane is envisaged as the eastern/southeastern reworked margin of the São Francisco/Rio de La Plata plate associated with an E-trending subduction under the Congo plate. The Paraíba do Sul Klippe is part of the Oriental Terrane, envisaged as a portion of the Congo plate. A collisional-stage resulted in intense westward deformation of the Occidental Terrane under intermediate pressure metamorphism (syn-D1+D2 events). A late-collisional stage resulted in subvertical folding and steep shear zones (D3 event). Both stages were associated with voluminous crustal-derived granites. U-Pb and Sm-Nd geochronology as well as geochemical and structural data point to three magmatic episodes: 1) a syn-collisional stage 1; 2) a syn-collisional stage 2; and 3) a late-collisional stage. This paper presents a magmatic evolutionary model for this crustal segment of the Ribeira orogenic belt based on new geological data of Brasiliano granites and data available in the literature.en-US
dc.descriptionThe Occidental Terrane is envisaged as the eastern/southeastern reworked margin of the São Francisco/Rio de La Plata plate associated with an E-trending subduction under the Congo plate. The Paraíba do Sul Klippe is part of the Oriental Terrane, envisaged as a portion of the Congo plate. A collisional-stage resulted in intense westward deformation of the Occidental Terrane under intermediate pressure metamorphism (syn-D1+D2 events). A late-collisional stage resulted in subvertical folding and steep shear zones (D3 event). Both stages were associated with voluminous crustal-derived granites. U-Pb and Sm-Nd geochronology as well as geochemical and structural data point to three magmatic episodes: 1) a syn-collisional stage 1; 2) a syn-collisional stage 2; and 3) a late-collisional stage. This paper presents a magmatic evolutionary model for this crustal segment of the Ribeira orogenic belt based on new geological data of Brasiliano granites and data available in the literature.pt-BR
dc.formatapplication/pdf
dc.languageeng
dc.publisherSociedade Brasileira de Geologiapt-BR
dc.relationhttps://ppegeo.igc.usp.br/index.php/rbg/article/view/10859/10315
dc.rightsDireitos autorais 2017 Revista Brasileira de Geociênciaspt-BR
dc.sourceRevista Brasileira de Geociências; v. 30, n. 1 (2000); 001-006en-US
dc.sourceRevista Brasileira de Geociências; v. 30, n. 1 (2000); 001-006es-ES
dc.sourceRevista Brasileira de Geociências; v. 30, n. 1 (2000); 001-006pt-BR
dc.source0375-7536
dc.subjectRibeira belt; Brazilian granitoids; Geochemistry; Sm-Nd isotopic data.en-US
dc.subjectRibeira belt; Brazilian granitoids; Geochemistry; Sm-Nd isotopic data.pt-BR
dc.titleTHE TECTONO-MAGMATIC EVOLUTION OF THE OCCIDENTAL TERRANE AND THE PARAÍBA DO SUL KLIPPE WITHIN THE NEOPROTEROZOIC RIBEIRA OROGENIC BELT, SOUTHEASTERN BRAZILen-US
dc.titleTHE TECTONO-MAGMATIC EVOLUTION OF THE OCCIDENTAL TERRANE AND THE PARAÍBA DO SUL KLIPPE WITHIN THE NEOPROTEROZOIC RIBEIRA OROGENIC BELT, SOUTHEASTERN BRAZILpt-BR
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typept-BR


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