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
- Institución
- Universidad Nacional de Río Negro
- OAI Identificador
- oai:rid.unrn.edu.ar:20.500.12049/13357
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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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info:eu-repo/semantics/embargoedAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ |
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application/pdf |
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Elsevier |
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Elsevier |
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reponame:RID-UNRN (UNRN) instname:Universidad Nacional de Río Negro |
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Universidad Nacional de Río Negro |
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