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dc.contributor.authorGonzález, Pablo Diego-
dc.contributor.authorOriolo, Sebastián-
dc.contributor.authorSchulz, Bernhard-
dc.contributor.authorNaipauer, Maximiliano-
dc.contributor.authorMarcos, Paulo-
dc.contributor.authorSato, Ana María-
dc.contributor.authorVarela, Ricardo-
dc.contributor.authorKrause, Joachim-
dc.contributor.authorCábana, María Cecilia-
dc.date.accessioned2022-02-11T13:22:41Z-
dc.date.available2022-02-11T13:22:41Z-
dc.date.issued2021-03-29-
dc.identifier.otherhttps://www.minersoc.org/wp-content/uploads/2021/06/MSG-Abstracts-volume-2021.pdfes_ES
dc.identifier.urihttp://rid.unrn.edu.ar/handle/20.500.12049/8288-
dc.descriptionGonzález, P.D., Oriolo, S., Schulz, B., Naipauer, M., Marcos, P., Sato, A., Varela, R., Krause, J., Cábana, M.C. 2021. Permian nappe tectonics and high-grade metamorphism related to Gondwanide Orogeny in northern Patagonia terrane. Metamorphic Studies Group Research in Progress Meeting. The Mineralogical Society. Abstract Volume, p. 54. Virtual meeting 29-31 March 2021.es_ES
dc.language.isoenes_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/-
dc.titlePermian nappe tectonics and high-grade metamorphism related to Gondwanide Orogeny in northern Patagonia terrane.es_ES
dc.typeObjeto de conferenciaes_ES
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)-
dc.description.filiationGonzález, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina. Servicio Geológico Minero Argentino, Centro General Roca, Río Negro, SEGEMAR Regional Sur, Independencia 1495, Parque Industrial 1, Gral. Roca, (Río Negro), C. P. 8332, Casilla, Correo, Argentina.es_ES
dc.description.filiationOriolo, Sebastián. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires (UBA-CONICET), Güiraldes 2160, Ciudad Universitaria, Pabellón II, C 1428 EHA, Buenos Aires, Argentina.es_ES
dc.description.filiationSchulz, Bernhard. TU Bergakademie Freiberg, Institute of Mineralogy, Saxony, Alemania.es_ES
dc.description.filiationNaipauer, Maximiliano. INGEIS (UBA-CONICET), CABA, Argentina.es_ES
dc.description.filiationMarcos, Paulo. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.es_ES
dc.description.filiationSato, Ana María. Centro de Investigaciones Geológicas (UNLP-CONICET), Diagonal 113 N° 275, B 1904 DPK, La Plata, Argentina.es_ES
dc.description.filiationVarela, Ricardo. Centro de Investigaciones Geológicas (UNLP-CONICET), Diagonal 113 N° 275, B 1904 DPK, La Plata, Argentina.es_ES
dc.description.filiationKrause, Joachim. Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz Institute Freiberg for Resource Technology, Freiberg, Germany.es_ES
dc.description.filiationCábana, María Cecilia. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.es_ES
dc.subject.keywordPatagoniaes_ES
dc.subject.keywordPaleozoices_ES
dc.subject.keywordIgneous-metamorphic Basementes_ES
dc.subject.keywordU–Pb zircones_ES
dc.subject.keywordTh–U–Pb monazitees_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES
dc.subject.materiaCiencias de la Tierra (General)es_ES
dc.origin.lugarDesarrolloServicio Geológico Minero Argentino, regional Sur, General Rocaes_ES
dc.description.resumenThe focus of this contribution is to characterize a sequential order of deformational structures and associated metamorphic conditions of the igneous-metamorphic basement rocks from northern Patagonia terrane (41°28’30”S-65°40’30”W). Based on field mapping, mesoscopic structures are analysed to evaluate progressive and polyphasic deformation, developed under regional high-grade metamorphism. Three continuous deformational phases are recognized. During D1 phase, the formation of overturned tight F1 folds is associated with penetrative axial plane foliation S1. It exhibits P-T conditions close to the baric peak, and likely represents the progressive metamorphic stage associated with syn-kinematic growth of garnet-kyanite porphyroblasts in meta-pelites. D2 phase is recorded as either shear bands S2 transposition or mylonitic foliation, coeval with polymorphic transformation of kyanite to sillimanite owing to thermal peak. A nappe system related to kilometer scale El Jagüelito ductile shear zone characterizes the large-scale D2 structure of the investigated area. D3 phase is distinguished by refolding of the former fabric and formation of either kink-bands or crenulation cleavage S3 of the S1-S2 foliation planes, under retrogressive metamorphic conditions. The nappe system exhibit a top-to-the S/SW tectonic transport, and the El Jagüelito shear zone served as a right lateral ramp in the exhumation process among D2-D3 events. Petrographic analyses of metamorphic mineral assemblages and reaction textures combined with conventional geothermobarometric estimates and a pseudosection records the pressure-temperature conditions of metamorphism among D1-D3 events. In situ electron probe Th‐U‐Pb monazite dating of 272, 260, and 251 Ma constraints the main tectono-metamorphic event to Late Permian Gondwanide Orogeny. New results combined with existing geological and geochronological constraints allow inferring a clockwise P-T-D-time evolutionary path within the kyanite-sillimanite stability fields. Comprehensive regional comparison of the large-scale structural framework is indicative of an ongoing oblique subduction beneath the proto-Andean margin of Gondwana in the NE direction. This continental subduction and exhumation lasted at least 20 million years, nearly the entire Guadalupian-Lopingian series, producing transpression and metamorphic conditions of amphibolite-to-granulite facies, in medium- to high-pressure regimes, although the studied area occur in a back-arc to intracontinental settings. Geotectonic implications also includes a long-lived tectono-metamorphic history of the El Jagüelito shear zone, which was formed during Early Paleozoic and successively reactivated during Permian and Jurassic times.es_ES
dc.relation.journalTitleMetamorphic Studies Group Research in Progress Meeting. The Mineralogical Society. Abstract Volume.es_ES
dc.type.subtypeResumenes_ES
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