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
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/4068

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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 Negro2025-09-04T11:13:11Zoai: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:43692025-09-04 11:13:11.351RID-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
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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)
instname_str Universidad Nacional de Río Negro
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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