Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide or...

Autores: González, Santiago N.; Greco, Gerson A.; Sato, Ana M.; Llambías, Eduardo J.; Basei, Miguel A.; González, Pablo D.; Díaz, Pablo E.
Año de publicación: 2017
Idioma: inglés
Tipo de recurso: artículo
Estado: versión aceptada
Descripción: Fil: Greco, Gerson A. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: Greco, Gerson A. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: González, Santiago N. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: González, Santiago N. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: Sato, Ana M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geológicas Buenos Aires; Argentina.
Fil: Sato, Ana M. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.
Fil: Llambías, Eduardo J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geológicas Buenos Aires; Argentina.
Fil: Llambías, Eduardo J. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.
Fil: González, Pablo D. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: González, Pablo D. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: Díaz, Pablo E. Universidad Nacional de la Pampa. Facultad de Ciencias exactas y Naturales (Dpto. Geología). La Pampa; Argentina.
The Marifil Volcanic Complex is an extended volcanic and pyroclastic unit outcropping in the North Patagonia. It has been included in the Chon Aike large igneous province associated to the thermal anomaly of the Karoo plume. The Marifil Volcanic Complex is mainly composed of rhyolites, dacites, rhyodacites and minor trachytes and trachyandesites. The latter are common in the base of the unit. The upper acidic rocks have been dated between 192 Ma to 151 Ma (Early to Middle Jurassic) by K-Ar, Ar-Ar and Rb-Sr methods. On the other hand, the age of the mesosilicic rocks range from 221 Ma to 173 Ma (K-Ar whole rock ages). In this research, we revise the stratigraphic relations, geochemistry and petrography of the mesosilisic rocks from Marifil Volcanic Complex. Aditionally, a new U-Pb crystallization age of 247.22 ± 0.46 Ma was obtained for an trachytic lava flow that covers Permian granitoids and which is covered by rhyolitic ignimbrites. The mentioned mesosilisic rocks are chemically trachytes and trachyandesites and show subduction margin affinities. In the area, a Triassic trachyandesitic dyke swarm has been considered as an expression of Gondwanide postorogenic extension in the North Patagonian Massif. Basis on our new age data and considering the compositional and stratigraphic differences we separate the Triassic trachytic to trachyandesitic rocks from the Jurassic rhyolites and dacites. These two groups of rocks represent different geotectonic events in the Southwestern margin of Pangea.
No corresponde, la publicación es en idioma ingles
Materia: Geociencias (Multidisciplinar)
U-Pb; Pangea
trachyte
postorogenic
extension
Geociencias (Multidisciplinar)
Nivel de accesibilidad: acceso abierto
Condiciones de uso: https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
Institución: Universidad Nacional de Río Negro
OAI Identificador: oai:rid.unrn.edu.ar:20.500.12049/4068

Acceder

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network_acronym_str	RIDUNRN
repository_id_str	4369
network_name_str	RID-UNRN (UNRN)
spelling	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogenGonzález, Santiago N.Greco, Gerson A.Sato, Ana M.Llambías, Eduardo J.Basei, Miguel A.González, Pablo D.Díaz, Pablo E.Geociencias (Multidisciplinar)U-Pb; PangeatrachytepostorogenicextensionGeociencias (Multidisciplinar)Fil: Greco, Gerson A. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: Greco, Gerson A. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: González, Santiago N. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: González, Santiago N. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: Sato, Ana M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geológicas Buenos Aires; Argentina.Fil: Sato, Ana M. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.Fil: Llambías, Eduardo J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geológicas Buenos Aires; Argentina.Fil: Llambías, Eduardo J. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.Fil: González, Pablo D. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: González, Pablo D. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: Díaz, Pablo E. Universidad Nacional de la Pampa. Facultad de Ciencias exactas y Naturales (Dpto. Geología). La Pampa; Argentina.The Marifil Volcanic Complex is an extended volcanic and pyroclastic unit outcropping in the North Patagonia. It has been included in the Chon Aike large igneous province associated to the thermal anomaly of the Karoo plume. The Marifil Volcanic Complex is mainly composed of rhyolites, dacites, rhyodacites and minor trachytes and trachyandesites. The latter are common in the base of the unit. The upper acidic rocks have been dated between 192 Ma to 151 Ma (Early to Middle Jurassic) by K-Ar, Ar-Ar and Rb-Sr methods. On the other hand, the age of the mesosilicic rocks range from 221 Ma to 173 Ma (K-Ar whole rock ages). In this research, we revise the stratigraphic relations, geochemistry and petrography of the mesosilisic rocks from Marifil Volcanic Complex. Aditionally, a new U-Pb crystallization age of 247.22 ± 0.46 Ma was obtained for an trachytic lava flow that covers Permian granitoids and which is covered by rhyolitic ignimbrites. The mentioned mesosilisic rocks are chemically trachytes and trachyandesites and show subduction margin affinities. In the area, a Triassic trachyandesitic dyke swarm has been considered as an expression of Gondwanide postorogenic extension in the North Patagonian Massif. Basis on our new age data and considering the compositional and stratigraphic differences we separate the Triassic trachytic to trachyandesitic rocks from the Jurassic rhyolites and dacites. These two groups of rocks represent different geotectonic events in the Southwestern margin of Pangea.No corresponde, la publicación es en idioma inglesElsevier2017-02-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfGonzález, Santiago N., Greco, Gerson A., Sato, Ana M., Llambías, Eduardo J., Basei, Miguel A., González, Pablo D. y Díaz, Pablo E. (2017). Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen. Elsevier; Journal of South American Earth Sciences; 75; 134-143. http://dx.doi.org/10.1016/j.jsames.2017.02.007.0895-98111873-0647https://www.sciencedirect.com/science/article/pii/S0895981116302140?via%3Dihubhttps://rid.unrn.edu.ar/jspui/handle/20.500.12049/4068http://dx.doi.org/10.1016/j.jsames.2017.02.007eng75Journal of South American Earth Sciencesinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:15Zoai:rid.unrn.edu.ar:20.500.12049/4068instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:15.689RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen
title	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen
spellingShingle	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen González, Santiago N. Geociencias (Multidisciplinar) U-Pb; Pangea trachyte postorogenic extension Geociencias (Multidisciplinar)
title_short	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen
title_full	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen
title_fullStr	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen
title_full_unstemmed	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen
title_sort	Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen
dc.creator.none.fl_str_mv	González, Santiago N. Greco, Gerson A. Sato, Ana M. Llambías, Eduardo J. Basei, Miguel A. González, Pablo D. Díaz, Pablo E.
author	González, Santiago N.
author_facet	González, Santiago N. Greco, Gerson A. Sato, Ana M. Llambías, Eduardo J. Basei, Miguel A. González, Pablo D. Díaz, Pablo E.
author_role	author
author2	Greco, Gerson A. Sato, Ana M. Llambías, Eduardo J. Basei, Miguel A. González, Pablo D. Díaz, Pablo E.
author2_role	author author author author author author
dc.subject.none.fl_str_mv	Geociencias (Multidisciplinar) U-Pb; Pangea trachyte postorogenic extension Geociencias (Multidisciplinar)
topic	Geociencias (Multidisciplinar) U-Pb; Pangea trachyte postorogenic extension Geociencias (Multidisciplinar)
dc.description.none.fl_txt_mv	Fil: Greco, Gerson A. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: Greco, Gerson A. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: González, Santiago N. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: González, Santiago N. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: Sato, Ana M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geológicas Buenos Aires; Argentina. Fil: Sato, Ana M. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina. Fil: Llambías, Eduardo J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geológicas Buenos Aires; Argentina. Fil: Llambías, Eduardo J. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina. Fil: González, Pablo D. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: González, Pablo D. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: Díaz, Pablo E. Universidad Nacional de la Pampa. Facultad de Ciencias exactas y Naturales (Dpto. Geología). La Pampa; Argentina. The Marifil Volcanic Complex is an extended volcanic and pyroclastic unit outcropping in the North Patagonia. It has been included in the Chon Aike large igneous province associated to the thermal anomaly of the Karoo plume. The Marifil Volcanic Complex is mainly composed of rhyolites, dacites, rhyodacites and minor trachytes and trachyandesites. The latter are common in the base of the unit. The upper acidic rocks have been dated between 192 Ma to 151 Ma (Early to Middle Jurassic) by K-Ar, Ar-Ar and Rb-Sr methods. On the other hand, the age of the mesosilicic rocks range from 221 Ma to 173 Ma (K-Ar whole rock ages). In this research, we revise the stratigraphic relations, geochemistry and petrography of the mesosilisic rocks from Marifil Volcanic Complex. Aditionally, a new U-Pb crystallization age of 247.22 ± 0.46 Ma was obtained for an trachytic lava flow that covers Permian granitoids and which is covered by rhyolitic ignimbrites. The mentioned mesosilisic rocks are chemically trachytes and trachyandesites and show subduction margin affinities. In the area, a Triassic trachyandesitic dyke swarm has been considered as an expression of Gondwanide postorogenic extension in the North Patagonian Massif. Basis on our new age data and considering the compositional and stratigraphic differences we separate the Triassic trachytic to trachyandesitic rocks from the Jurassic rhyolites and dacites. These two groups of rocks represent different geotectonic events in the Southwestern margin of Pangea. No corresponde, la publicación es en idioma ingles
description	Fil: Greco, Gerson A. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
publishDate	2017
dc.date.none.fl_str_mv	2017-02-21
dc.type.none.fl_str_mv	info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo
format	article
status_str	acceptedVersion
dc.identifier.none.fl_str_mv	González, Santiago N., Greco, Gerson A., Sato, Ana M., Llambías, Eduardo J., Basei, Miguel A., González, Pablo D. y Díaz, Pablo E. (2017). Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen. Elsevier; Journal of South American Earth Sciences; 75; 134-143. http://dx.doi.org/10.1016/j.jsames.2017.02.007. 0895-9811 1873-0647 https://www.sciencedirect.com/science/article/pii/S0895981116302140?via%3Dihub https://rid.unrn.edu.ar/jspui/handle/20.500.12049/4068 http://dx.doi.org/10.1016/j.jsames.2017.02.007
identifier_str_mv	González, Santiago N., Greco, Gerson A., Sato, Ana M., Llambías, Eduardo J., Basei, Miguel A., González, Pablo D. y Díaz, Pablo E. (2017). Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide orogen. Elsevier; Journal of South American Earth Sciences; 75; 134-143. http://dx.doi.org/10.1016/j.jsames.2017.02.007. 0895-9811 1873-0647
url	https://www.sciencedirect.com/science/article/pii/S0895981116302140?via%3Dihub https://rid.unrn.edu.ar/jspui/handle/20.500.12049/4068 http://dx.doi.org/10.1016/j.jsames.2017.02.007
dc.language.none.fl_str_mv	eng
language	eng
dc.relation.none.fl_str_mv	75 Journal of South American Earth Sciences
dc.rights.none.fl_str_mv	info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv	openAccess
rights_invalid_str_mv	https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv	application/pdf
dc.publisher.none.fl_str_mv	Elsevier
publisher.none.fl_str_mv	Elsevier
dc.source.none.fl_str_mv	reponame:RID-UNRN (UNRN) instname:Universidad Nacional de Río Negro
reponame_str	RID-UNRN (UNRN)
collection	RID-UNRN (UNRN)
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repository.name.fl_str_mv	RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv	rid@unrn.edu.ar
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Middle Triassic trachytic lava flows associated with coeval dyke swarm in the North Patagonian Massif: A postorogenic magmatism related to extensional collapse of the Gondwanide or...

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