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The Rinconada phase: A regional tectono-metamorphic event of Silurian age in the pre-Andean basement of Argentina

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dc.creatorCasquet, César
dc.creatorRamacciotti, Carlos Dino
dc.creatorLarrovere, Mariano Alexis
dc.creatorVerdecchia, Sebastián Osvaldo
dc.creatorMurra, Juan Alberto Félix
dc.creatorBaldo, Edgardo Gaspar Agustin
dc.creatorPankhurst, Robert
dc.creatorRapela, Carlos Washington
dc.date.issued2021-11-18
dc.description.abstractA Silurian regional tectonometamorphic event has been widely recorded by different geochronological methods in the Sierras Pampeanas, NW Argentina and the Precordillera. It took place between ca. 445 and 420 Ma after the regional Hirnantian (late Ordovician) glaciogenic sedimentation. Three domains are recognized. 1) The eastern Sierras Pampeanas and the Puna mainly record focused westward ductile thrusting and heating. 2) In the westernmost Sierras Pampeanas (Maz, Espinal, and Umango) garnet-amphibolite facies metamorphism, penetrative foliation development and westward ductile thrusting (nappes) took place. 3) In the Precordillera, the Rinconada formation of Silurian age consisting of chaotic olistoliths of Ordovician and Cambrian age correlates with this event. The three domains correspond to the hinterland, the internal hot and thickened metamorphic core, and the foreland respectively of an orogenic belt. Remarkably no Cordilleran-type magmatism of this age has been recorded. The regional importance of this event was overlooked so far.
dc.identifierCasquet, César; Ramacciotti, Carlos Dino; Larrovere, Mariano Alexis; Verdecchia, Sebastián Osvaldo; Murra, Juan Alberto Félix; et al.; The Rinconada phase: A regional tectono-metamorphic event of Silurian age in the pre-Andean basement of Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 111; 18-11-2021; 1-7
dc.identifier0895-9811
dc.identifierhttp://hdl.handle.net/11336/161518
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://naturalis.fcnym.unlp.edu.ar/handle/628872547/56801
dc.languageeng
dc.publisherPergamon-Elsevier Science Ltd
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jsames.2021.103432
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981121002790
dc.subjectARGENTINA
dc.subjectFAMATINIAN OROGENY
dc.subjectGEOCHRONOLOGY
dc.subjectTHE RINCONADA TECTONIC PHASE
dc.titleThe Rinconada phase: A regional tectono-metamorphic event of Silurian age in the pre-Andean basement of Argentina
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication

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