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Folguera Telichevsky, Andres
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Navarrete, Cesar
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Gianni, Guido Martin
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Echaurren, Andres
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Fennell, Lucas Martín
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Martos, Federico Exequiel
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Acevedo, Eliana Belén
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2022-04-29T11:25:15Z
dc.date.issued
2019
dc.identifier.citation
Review and update about the late Triassic to Jurassic tectonics through the transition zone between the southern Central and Patagonian Andes; 8th International Symposium on Andean Geodynamics; Quito; Ecuador; 2019; 1-1
dc.identifier.uri
http://hdl.handle.net/11336/156092
dc.description.abstract
In the last years, a substantial change has occurred concerning previous concepts accepted for theJurassic tectonics in the area comprehended between the Patagonian and Central Andes. The previoushypothesis conceived a rather simple framework in which from the Neuquén Basin latitudes to the southinto Patagonia, a series of extensional depocenters were evolving through their mechanical and thermalsubsiding stages during incipient Pangea break up. However, in the last time, new data and ideas havedefied these hypotheses, strongly affianced in the scientific community, following pioneering proposalsof Lock (1980) and Dalziel et al. (2000). The first of these controversial premises is that Patagoniasuffered a shortening stage associated with the inland migration of a volcanic arc in Late Triassic times(Navarrete et al., 2019), while to the north crustal stretching conditions dominated south-westernGondwana. This new hypothesis considers that the Late Triassic Central Batholith constitutes amagmatic arc in central Patagonia and that a Late Triassic contractional episode developed, describedfrom field and seismic data. The second premise is that Patagonia kept suffering short pulses ofwithin-plate shortening during the Jurassic, interrupting sag stages of intra- and retro-arc basins(Navarrete et al., 2016). These discrete pulses most likely relate to a strong kinematic change anddrifting to the south registered in Gondwana at ~180 Ma, when the North Atlantic ocean started tospread, and with the initial Weddell sea opening at ~160 Ma that pushed the Patagonian platform in theopposite direction, at the time when the Karoo hot spot emplaced and expanded to the east (Müller etal., 2006). During these changes, the Liassic and Cañadón Asfalto basins in Chubut, easternvolcanogenic basins, and the North Patagonian and Deseado massifs suffered early inversion andexhumation phases. These Late Triassic to Jurassic contractional pulses thickened the crust indicatedby REE elements in Mesozoic magmas emplaced in the Patagonian Andes and created a topographythat fed with detritus Jurassic basins that were subsiding to the north in the proto-Central Andes region.Dalziel, I., Lawver, L., Murphy, J., 2000. Plumes, orogénesis, and supercontinental fragmentation. Earth and Planetary Science Letters 178, 1-11.Lock, B., 1980. Flat-plate subduction and the Cape Fold Belt of South Africa. Geology 8, 35-39.Müller, D.R., Seton, M., Zahirovic, S., Williams, S.E., Matthews, K.J., Wright, N.M.,Shephard, G.E., Maloney, K.T., Barnett-Moore, N.,Hosseinpour, M., Bower, D.J.,Cannon, J., 2016. Ocean basin evolution and global-scale plate reorganization events since Pangeabreakup. The Annual Review of Earth and Planetary Sciences 44, 107?138.Navarrete, C., Gianni, G., Encinas, A., Márquez, M., Kamerbeek, Y., Valle, M., Folguera, A., 2019. Triassic to Middle Jurassicgeodynamic evolution of southwestern Gondwana in Patagonia: From a large flat-slab to a plume suction in a roll-back subduction setting. EarthScience Review. In Press.Navarrete, C., Gianni, G., Echaurren, A., Folguera, A., 2016. Episodic Jurassic intraplate compression during supercontinent breakup. Journal ofGeodynamics 102, 185-20.
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application/pdf
dc.language.iso
eng
dc.publisher
International Society for Animal Genetics
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Tectonics
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Contraction
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Extension
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Flat-slab
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Geología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Review and update about the late Triassic to Jurassic tectonics through the transition zone between the southern Central and Patagonian Andes
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2022-03-17T14:02:47Z
dc.journal.pagination
1-1
dc.journal.pais
Ecuador
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Quito
dc.description.fil
Fil: Folguera Telichevsky, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
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Fil: Navarrete, Cesar. Universidad de Buenos Aires; Argentina
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Fil: Gianni, Guido Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
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Fil: Echaurren, Andres. Universidad de Buenos Aires; Argentina
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Fil: Fennell, Lucas Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
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Fil: Martos, Federico Exequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
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Fil: Acevedo, Eliana Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
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info:eu-repo/semantics/altIdentifier/url/https://www.igepn.edu.ec/8isag-abstracts
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Autor
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dc.coverage
Internacional
dc.type.subtype
Simposio
dc.description.nombreEvento
8th International Symposium on Andean Geodynamics
dc.date.evento
2019-09-24
dc.description.ciudadEvento
Quito
dc.description.paisEvento
Ecuador
dc.type.publicacion
Journal
dc.description.institucionOrganizadora
Escuela Politécnica Nacional
dc.description.institucionOrganizadora
Institut de Recherche pour le Développement;
dc.source.revista
8th International Symposium on Andean Geodynamics
dc.type
Simposio
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