The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula

Autores
Falco, Juan; Suárez, Rodrigo; Hauser, Natalia; Zaffarana, Claudia; Scivetti, Nicolas; Uwe Reimold, Wolf; Folguera, Andrés
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Falco, Juan. Dirección Regional Patagonia Norte - Administración de Parques Nacionales. Argentina.
Fil: Suárez, Rodrigo. Instituto de Investigación en Paleobiología y Geología (IIPG; UNRN-CONICET). Universidad Nacional Río Negro (UNRN), Sede Alto Valle y Valle Medio. Argentina.
Fil: Hauser, Natalia. Laboratório de Geocronologia e Geoquímica Isotópica, Instituto de Geociencias, Universidade de Brasília (UnB). Argentina.
Fil: Zaffarana, Claudia. Instituto de Investigación en Paleobiología y Geología (IIPG; UNRN-CONICET). Universidad Nacional Río Negro (UNRN), Sede Alto Valle y Valle Medio. Argentina.
Fil: Scivetti, Nicolas. Instituto Patagónico de Geología y Paleontología (IPGP; CONICET), Centro Nacional Patagónico (CENPAT). Universidad Nacional de la Patagonia San Juan Bosco. Facultad de Cs. Naturales y Cs. de la Salud. Argentina.
Fil: Uwe Reimold, Wolf. Laboratório de Geocronologia e Geoquímica Isotópica, Instituto de Geociencias, Universidade de Brasília (UnB). Argentina.
Fil: Folguera, Andrés. Instituto de Estudios Andinos “Don Pablo Groeber” (IDEAN; UBA-CONICET). Argentina.
The geodynamic setting across the Paleozoic to Mesozoic transition in Patagonia and the Antarctic Peninsula (SW Pangea) has been strongly debated. Hypotheses of terrane accretion, episodes of shallower to flattened subduction, long-lived stages of crustal extension, or even subduction arrest have been variably proposed. We have compiled and re-evaluated the available whole-rock geochemistry and zircon Hf-isotope data for Permian to Triassic rocks from Patagonia and the Antarctic Peninsula, and compared these findings with the orogenic events in these regions We have identified that two orogenic cycles occurred along the SW margin of Pangea during the PermianTriassic interval, namely the Gondwanide and Chonide/Peninsula orogenies. Both orogenies coexisted with the development of magmatic arcs; the Permian arc exhibits an overall I-type signature that switched to A-type towards ca. 252 Ma, whereas the Triassic arc has an S-type signature in the Antarctic Peninsula and intraplate features in Patagonia. The Hf isotope data for zircon exhibit broadly subchondritic values, suggesting significant crustal contribution in the magmatic source during both cycles. The short- and long-term temporal behavior of the isotopic trends suggests variations that may be attributable to the participation of primitive and/or evolved sources. We conclude that the geochemical and isotopic signatures of the magmas, together with different styles of crustal deformation, resulted from the interaction of the upper and lower plates, consistent with the evolution of an accretionary-type margin along SW Pangea during Permian and Triassic times.
The geodynamic setting across the Paleozoic to Mesozoic transition in Patagonia and the Antarctic Peninsula (SW Pangea) has been strongly debated. Hypotheses of terrane accretion, episodes of shallower to flattened subduction, long-lived stages of crustal extension, or even subduction arrest have been variably proposed. We have compiled and re-evaluated the available whole-rock geochemistry and zircon Hf-isotope data for Permian to Triassic rocks from Patagonia and the Antarctic Peninsula, and compared these findings with the orogenic events in these regions We have identified that two orogenic cycles occurred along the SW margin of Pangea during the PermianTriassic interval, namely the Gondwanide and Chonide/Peninsula orogenies. Both orogenies coexisted with the development of magmatic arcs; the Permian arc exhibits an overall I-type signature that switched to A-type towards ca. 252 Ma, whereas the Triassic arc has an S-type signature in the Antarctic Peninsula and intraplate features in Patagonia. The Hf isotope data for zircon exhibit broadly subchondritic values, suggesting significant crustal contribution in the magmatic source during both cycles. The short- and long-term temporal behavior of the isotopic trends suggests variations that may be attributable to the participation of primitive and/or evolved sources. We conclude that the geochemical and isotopic signatures of the magmas, together with different styles of crustal deformation, resulted from the interaction of the upper and lower plates, consistent with the evolution of an accretionary-type margin along SW Pangea during Permian and Triassic times.
Materia
Ciencias Exactas y Naturales
Patagonia, Antarctic peninsula, Gondwanide orogeny, Chonide orogeny
Ciencias Exactas y Naturales
Nivel de accesibilidad
acceso embargado
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:20.500.12049/13357

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oai_identifier_str oai:rid.unrn.edu.ar:20.500.12049/13357
network_acronym_str RIDUNRN
repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic PeninsulaFalco, JuanSuárez, RodrigoHauser, NataliaZaffarana, ClaudiaScivetti, NicolasUwe Reimold, WolfFolguera, AndrésCiencias Exactas y NaturalesPatagonia, Antarctic peninsula, Gondwanide orogeny, Chonide orogenyCiencias Exactas y NaturalesFil: Falco, Juan. Dirección Regional Patagonia Norte - Administración de Parques Nacionales. Argentina.Fil: Suárez, Rodrigo. Instituto de Investigación en Paleobiología y Geología (IIPG; UNRN-CONICET). Universidad Nacional Río Negro (UNRN), Sede Alto Valle y Valle Medio. Argentina.Fil: Hauser, Natalia. Laboratório de Geocronologia e Geoquímica Isotópica, Instituto de Geociencias, Universidade de Brasília (UnB). Argentina.Fil: Zaffarana, Claudia. Instituto de Investigación en Paleobiología y Geología (IIPG; UNRN-CONICET). Universidad Nacional Río Negro (UNRN), Sede Alto Valle y Valle Medio. Argentina.Fil: Scivetti, Nicolas. Instituto Patagónico de Geología y Paleontología (IPGP; CONICET), Centro Nacional Patagónico (CENPAT). Universidad Nacional de la Patagonia San Juan Bosco. Facultad de Cs. Naturales y Cs. de la Salud. Argentina.Fil: Uwe Reimold, Wolf. Laboratório de Geocronologia e Geoquímica Isotópica, Instituto de Geociencias, Universidade de Brasília (UnB). Argentina.Fil: Folguera, Andrés. Instituto de Estudios Andinos “Don Pablo Groeber” (IDEAN; UBA-CONICET). Argentina.The geodynamic setting across the Paleozoic to Mesozoic transition in Patagonia and the Antarctic Peninsula (SW Pangea) has been strongly debated. Hypotheses of terrane accretion, episodes of shallower to flattened subduction, long-lived stages of crustal extension, or even subduction arrest have been variably proposed. We have compiled and re-evaluated the available whole-rock geochemistry and zircon Hf-isotope data for Permian to Triassic rocks from Patagonia and the Antarctic Peninsula, and compared these findings with the orogenic events in these regions We have identified that two orogenic cycles occurred along the SW margin of Pangea during the PermianTriassic interval, namely the Gondwanide and Chonide/Peninsula orogenies. Both orogenies coexisted with the development of magmatic arcs; the Permian arc exhibits an overall I-type signature that switched to A-type towards ca. 252 Ma, whereas the Triassic arc has an S-type signature in the Antarctic Peninsula and intraplate features in Patagonia. The Hf isotope data for zircon exhibit broadly subchondritic values, suggesting significant crustal contribution in the magmatic source during both cycles. The short- and long-term temporal behavior of the isotopic trends suggests variations that may be attributable to the participation of primitive and/or evolved sources. We conclude that the geochemical and isotopic signatures of the magmas, together with different styles of crustal deformation, resulted from the interaction of the upper and lower plates, consistent with the evolution of an accretionary-type margin along SW Pangea during Permian and Triassic times.The geodynamic setting across the Paleozoic to Mesozoic transition in Patagonia and the Antarctic Peninsula (SW Pangea) has been strongly debated. Hypotheses of terrane accretion, episodes of shallower to flattened subduction, long-lived stages of crustal extension, or even subduction arrest have been variably proposed. We have compiled and re-evaluated the available whole-rock geochemistry and zircon Hf-isotope data for Permian to Triassic rocks from Patagonia and the Antarctic Peninsula, and compared these findings with the orogenic events in these regions We have identified that two orogenic cycles occurred along the SW margin of Pangea during the PermianTriassic interval, namely the Gondwanide and Chonide/Peninsula orogenies. Both orogenies coexisted with the development of magmatic arcs; the Permian arc exhibits an overall I-type signature that switched to A-type towards ca. 252 Ma, whereas the Triassic arc has an S-type signature in the Antarctic Peninsula and intraplate features in Patagonia. The Hf isotope data for zircon exhibit broadly subchondritic values, suggesting significant crustal contribution in the magmatic source during both cycles. The short- and long-term temporal behavior of the isotopic trends suggests variations that may be attributable to the participation of primitive and/or evolved sources. We conclude that the geochemical and isotopic signatures of the magmas, together with different styles of crustal deformation, resulted from the interaction of the upper and lower plates, consistent with the evolution of an accretionary-type margin along SW Pangea during Permian and Triassic times.Elsevierinfo:eu-repo/date/embargoEnd/2027-01-012024-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfFalco, J. I., Suárez, R. J., Hauser, N., Zaffarana, C. B., Scivetti, N., Reimold, W. U., & Folguera, A. (2024). The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula. Journal of South American Earth Sciences, 150, 105201.http://rid.unrn.edu.ar/handle/20.500.12049/13357engJournal of South American Earth Sciencesinfo:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:20Zoai:rid.unrn.edu.ar:20.500.12049/13357instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:20.8RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula
title The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula
spellingShingle The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula
Falco, Juan
Ciencias Exactas y Naturales
Patagonia, Antarctic peninsula, Gondwanide orogeny, Chonide orogeny
Ciencias Exactas y Naturales
title_short The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula
title_full The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula
title_fullStr The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula
title_full_unstemmed The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula
title_sort The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula
dc.creator.none.fl_str_mv Falco, Juan
Suárez, Rodrigo
Hauser, Natalia
Zaffarana, Claudia
Scivetti, Nicolas
Uwe Reimold, Wolf
Folguera, Andrés
author Falco, Juan
author_facet Falco, Juan
Suárez, Rodrigo
Hauser, Natalia
Zaffarana, Claudia
Scivetti, Nicolas
Uwe Reimold, Wolf
Folguera, Andrés
author_role author
author2 Suárez, Rodrigo
Hauser, Natalia
Zaffarana, Claudia
Scivetti, Nicolas
Uwe Reimold, Wolf
Folguera, Andrés
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales
Patagonia, Antarctic peninsula, Gondwanide orogeny, Chonide orogeny
Ciencias Exactas y Naturales
topic Ciencias Exactas y Naturales
Patagonia, Antarctic peninsula, Gondwanide orogeny, Chonide orogeny
Ciencias Exactas y Naturales
dc.description.none.fl_txt_mv Fil: Falco, Juan. Dirección Regional Patagonia Norte - Administración de Parques Nacionales. Argentina.
Fil: Suárez, Rodrigo. Instituto de Investigación en Paleobiología y Geología (IIPG; UNRN-CONICET). Universidad Nacional Río Negro (UNRN), Sede Alto Valle y Valle Medio. Argentina.
Fil: Hauser, Natalia. Laboratório de Geocronologia e Geoquímica Isotópica, Instituto de Geociencias, Universidade de Brasília (UnB). Argentina.
Fil: Zaffarana, Claudia. Instituto de Investigación en Paleobiología y Geología (IIPG; UNRN-CONICET). Universidad Nacional Río Negro (UNRN), Sede Alto Valle y Valle Medio. Argentina.
Fil: Scivetti, Nicolas. Instituto Patagónico de Geología y Paleontología (IPGP; CONICET), Centro Nacional Patagónico (CENPAT). Universidad Nacional de la Patagonia San Juan Bosco. Facultad de Cs. Naturales y Cs. de la Salud. Argentina.
Fil: Uwe Reimold, Wolf. Laboratório de Geocronologia e Geoquímica Isotópica, Instituto de Geociencias, Universidade de Brasília (UnB). Argentina.
Fil: Folguera, Andrés. Instituto de Estudios Andinos “Don Pablo Groeber” (IDEAN; UBA-CONICET). Argentina.
The geodynamic setting across the Paleozoic to Mesozoic transition in Patagonia and the Antarctic Peninsula (SW Pangea) has been strongly debated. Hypotheses of terrane accretion, episodes of shallower to flattened subduction, long-lived stages of crustal extension, or even subduction arrest have been variably proposed. We have compiled and re-evaluated the available whole-rock geochemistry and zircon Hf-isotope data for Permian to Triassic rocks from Patagonia and the Antarctic Peninsula, and compared these findings with the orogenic events in these regions We have identified that two orogenic cycles occurred along the SW margin of Pangea during the PermianTriassic interval, namely the Gondwanide and Chonide/Peninsula orogenies. Both orogenies coexisted with the development of magmatic arcs; the Permian arc exhibits an overall I-type signature that switched to A-type towards ca. 252 Ma, whereas the Triassic arc has an S-type signature in the Antarctic Peninsula and intraplate features in Patagonia. The Hf isotope data for zircon exhibit broadly subchondritic values, suggesting significant crustal contribution in the magmatic source during both cycles. The short- and long-term temporal behavior of the isotopic trends suggests variations that may be attributable to the participation of primitive and/or evolved sources. We conclude that the geochemical and isotopic signatures of the magmas, together with different styles of crustal deformation, resulted from the interaction of the upper and lower plates, consistent with the evolution of an accretionary-type margin along SW Pangea during Permian and Triassic times.
The geodynamic setting across the Paleozoic to Mesozoic transition in Patagonia and the Antarctic Peninsula (SW Pangea) has been strongly debated. Hypotheses of terrane accretion, episodes of shallower to flattened subduction, long-lived stages of crustal extension, or even subduction arrest have been variably proposed. We have compiled and re-evaluated the available whole-rock geochemistry and zircon Hf-isotope data for Permian to Triassic rocks from Patagonia and the Antarctic Peninsula, and compared these findings with the orogenic events in these regions We have identified that two orogenic cycles occurred along the SW margin of Pangea during the PermianTriassic interval, namely the Gondwanide and Chonide/Peninsula orogenies. Both orogenies coexisted with the development of magmatic arcs; the Permian arc exhibits an overall I-type signature that switched to A-type towards ca. 252 Ma, whereas the Triassic arc has an S-type signature in the Antarctic Peninsula and intraplate features in Patagonia. The Hf isotope data for zircon exhibit broadly subchondritic values, suggesting significant crustal contribution in the magmatic source during both cycles. The short- and long-term temporal behavior of the isotopic trends suggests variations that may be attributable to the participation of primitive and/or evolved sources. We conclude that the geochemical and isotopic signatures of the magmas, together with different styles of crustal deformation, resulted from the interaction of the upper and lower plates, consistent with the evolution of an accretionary-type margin along SW Pangea during Permian and Triassic times.
description Fil: Falco, Juan. Dirección Regional Patagonia Norte - Administración de Parques Nacionales. Argentina.
publishDate 2024
dc.date.none.fl_str_mv 2024-10
info:eu-repo/date/embargoEnd/2027-01-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv Falco, J. I., Suárez, R. J., Hauser, N., Zaffarana, C. B., Scivetti, N., Reimold, W. U., & Folguera, A. (2024). The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula. Journal of South American Earth Sciences, 150, 105201.
http://rid.unrn.edu.ar/handle/20.500.12049/13357
identifier_str_mv Falco, J. I., Suárez, R. J., Hauser, N., Zaffarana, C. B., Scivetti, N., Reimold, W. U., & Folguera, A. (2024). The Permian to late Triassic magmatic evolution of SW Pangea: Reconciling evidence from Patagonia and the Antarctic Peninsula. Journal of South American Earth Sciences, 150, 105201.
url http://rid.unrn.edu.ar/handle/20.500.12049/13357
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of South American Earth Sciences
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eu_rights_str_mv embargoedAccess
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
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