Did Patagonia collide with Gondwana in the Late Paleozoic?

The origin of Patagonia and its relations with the South American crustal blocks to the north have been a matter of debate for decades. We report results from a multidisciplinary study centered on Paleozoic granitoids exposed in the northeastern corner of the North Patagonian Massif. Microstructural...

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Autores: Rapalini, A. E., López de Luchi, M. G., Martínez Dopico, C., Lince Klinger, F., Giménez, M. E., Martínez, Patricia
Tipo de documento: artigo
Data de publicação:2010
País:España
Recursos:Universitat Autònoma de Barcelona
Repositório:Dipòsit Digital de Documents de la UAB
Idioma:inglês
OAI Identifier:oai:ddd.uab.cat:85185
Acesso em linha:https://ddd.uab.cat/record/85185
https://dx.doi.org/urn:doi:10.1344/105.000001577
Access Level:Acceso aberto
Palavra-chave:Patagonia
Gondwana
Late Paleozoic
Collision
Magmatism
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spelling Did Patagonia collide with Gondwana in the Late Paleozoic?Some insights from a multidisciplinary study of magmatic units of the North Patagonian MassifRapalini, A. E.López de Luchi, M. G.Martínez Dopico, C.Lince Klinger, F.Giménez, M. E.Martínez, PatriciaPatagoniaGondwanaLate PaleozoicCollisionMagmatismThe origin of Patagonia and its relations with the South American crustal blocks to the north have been a matter of debate for decades. We report results from a multidisciplinary study centered on Paleozoic granitoids exposed in the northeastern corner of the North Patagonian Massif. Microstructural and magnetofabric studies reveal two suites of granitoids. Late Carboniferous (?) granitoids (Yaminué Complex, Tardugno Granodiorite, Cabeza de Vaca leucogranite) were emplaced and subsequently deformed in a major NNE-SSW compressive stress regime that also provoked top-to-the-SW thrust deformation in shallow crustal levels. Gravity and geobarometric studies show that the same major deformation event has been recorded at different crustal levels. The age and type of deformation of this event recorded across the northern boundary of Patagonia strongly supports a Late Carboniferous - Early Permian frontal collision between Patagonia and Gondwana. This major deformation event ceased by 281 Ma when the Navarrete Plutonic Complex, which shows mainly magmatic fabrics, was emplaced under a far-field WNW-ESE stress regime. Crustal continuity between the North Patagonian Massif and the Pampia and Arequipa- Antofalla terranes is suggested by similar Late Paleoproterozoic crustal model ages, comparable detrital zircon ages in Early Paleozoic successions, the apparent continuity of an Early Ordovician continental magmatic arc and paleomagnetic data. Reconciliation of this evidence with the Late Paleozoic frontal collision is obtained in a tectonic model that suggests that the North Patagonian Massif is a parautochthonous crustal block.Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)Universidad de Buenos Aires. Departamento de Ciencias GeológicasUniversidad de Buenos Aires. INGEODAV (Instituto de Geofísica "Daniel A. Valencio") 22010-01-0120102010-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/85185https://dx.doi.org/urn:doi:10.1344/105.000001577reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.https://creativecommons.org/licenses/by-sa/3.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:851852026-06-06T12:50:31Z
dc.title.none.fl_str_mv Did Patagonia collide with Gondwana in the Late Paleozoic?
Some insights from a multidisciplinary study of magmatic units of the North Patagonian Massif
title Did Patagonia collide with Gondwana in the Late Paleozoic?
spellingShingle Did Patagonia collide with Gondwana in the Late Paleozoic?
Rapalini, A. E.
Patagonia
Gondwana
Late Paleozoic
Collision
Magmatism
title_short Did Patagonia collide with Gondwana in the Late Paleozoic?
title_full Did Patagonia collide with Gondwana in the Late Paleozoic?
title_fullStr Did Patagonia collide with Gondwana in the Late Paleozoic?
title_full_unstemmed Did Patagonia collide with Gondwana in the Late Paleozoic?
title_sort Did Patagonia collide with Gondwana in the Late Paleozoic?
dc.creator.none.fl_str_mv Rapalini, A. E.
López de Luchi, M. G.
Martínez Dopico, C.
Lince Klinger, F.
Giménez, M. E.
Martínez, Patricia
author Rapalini, A. E.
author_facet Rapalini, A. E.
López de Luchi, M. G.
Martínez Dopico, C.
Lince Klinger, F.
Giménez, M. E.
Martínez, Patricia
author_role author
author2 López de Luchi, M. G.
Martínez Dopico, C.
Lince Klinger, F.
Giménez, M. E.
Martínez, Patricia
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
Universidad de Buenos Aires. Departamento de Ciencias Geológicas
Universidad de Buenos Aires. INGEODAV (Instituto de Geofísica "Daniel A. Valencio")
dc.subject.none.fl_str_mv Patagonia
Gondwana
Late Paleozoic
Collision
Magmatism
topic Patagonia
Gondwana
Late Paleozoic
Collision
Magmatism
description The origin of Patagonia and its relations with the South American crustal blocks to the north have been a matter of debate for decades. We report results from a multidisciplinary study centered on Paleozoic granitoids exposed in the northeastern corner of the North Patagonian Massif. Microstructural and magnetofabric studies reveal two suites of granitoids. Late Carboniferous (?) granitoids (Yaminué Complex, Tardugno Granodiorite, Cabeza de Vaca leucogranite) were emplaced and subsequently deformed in a major NNE-SSW compressive stress regime that also provoked top-to-the-SW thrust deformation in shallow crustal levels. Gravity and geobarometric studies show that the same major deformation event has been recorded at different crustal levels. The age and type of deformation of this event recorded across the northern boundary of Patagonia strongly supports a Late Carboniferous - Early Permian frontal collision between Patagonia and Gondwana. This major deformation event ceased by 281 Ma when the Navarrete Plutonic Complex, which shows mainly magmatic fabrics, was emplaced under a far-field WNW-ESE stress regime. Crustal continuity between the North Patagonian Massif and the Pampia and Arequipa- Antofalla terranes is suggested by similar Late Paleoproterozoic crustal model ages, comparable detrital zircon ages in Early Paleozoic successions, the apparent continuity of an Early Ordovician continental magmatic arc and paleomagnetic data. Reconciliation of this evidence with the Late Paleozoic frontal collision is obtained in a tectonic model that suggests that the North Patagonian Massif is a parautochthonous crustal block.
publishDate 2010
dc.date.none.fl_str_mv 2
2010-01-01
2010
2010-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/85185
https://dx.doi.org/urn:doi:10.1344/105.000001577
url https://ddd.uab.cat/record/85185
https://dx.doi.org/urn:doi:10.1344/105.000001577
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/3.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/3.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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