A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis

Autores
González, Santiago Nicolás; Greco, Gerson Alan; Citton, Paolo; Suárez, Rodrigo J.; Schiappa Pietra, María Belen; Ison, Juan I.
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
Fil: González, Santiago Nicolás. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: Greco, Gerson Alan. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: Citton, Paolo. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: Suárez, Rodrigo J. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: Schiappa Pietra, María Belen. Universidad Nacional de Río Negro – Sede Alto Valle y Valle Medio Localización General Roca (UNRN)
Fil: Ison, Juan I. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: González, Santiago Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
Fil: Greco, Gerson Alan. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
Fil: Citton, Paolo. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
Fil: Suárez, Rodrigo J. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
Fil: Ison, Juan I. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
We have studied a syn-rift sedimentary wedge corresponding to Puesto Piris Formation deposited in a half-graben related to the post-orogenic Gondwanide extension during Changhsingian (late Permian) to Triassic in the northeastern Patagonia. The sedimentary succession is in a half-graben depocentre covering a Palaeozoic basement that was probably exhumed during the late Permian. The basal section of the Puesto Piris Formation contains thick levels of conglomerates, almost exclusively composed of basement fragments. The succession continues with arenites, tuffites, and limestones that conformably overlie the conglomerate beds. Red layers of conglomerates and sandstones that are rich in volcanic fragments culminate the succession. We linked the changes in texture and composition along with the sedimentary succession with variations in the tectonic activity of a master fault delimiting the half-graben depocentre. In addition, new U-Pb zircon ages allowed us to constrain the sedimentary and tectonic processes from Wuchiapingian to Olenekian, possibly extending to Anisian (late Permian to Early Triassic, probably early Middle Triassic). This age range is consistent with the new founding of cf. Dicroidium fossil remains in the lower section of the Puesto Piris Formation. The age and provenance of the Puesto Piris Formation resemble other contemporaneous basins in southern Pangea, suggesting a generalised extensional setting (rifting) linked to active volcanism as part of the post-orogenesis and ending of the Gondwanide Orogen during the Pangea assembly.
We have studied a syn-rift sedimentary wedge corresponding to Puesto Piris Formation deposited in a half-graben related to the post-orogenic Gondwanide extension during Changhsingian (late Permian) to Triassic in the northeastern Patagonia. The sedimentary succession is in a half-graben depocentre covering a Palaeozoic basement that was probably exhumed during the late Permian. The basal section of the Puesto Piris Formation contains thick levels of conglomerates, almost exclusively composed of basement fragments. The succession continues with arenites, tuffites, and limestones that conformably overlie the conglomerate beds. Red layers of conglomerates and sandstones that are rich in volcanic fragments culminate the succession. We linked the changes in texture and composition along with the sedimentary succession with variations in the tectonic activity of a master fault delimiting the half-graben depocentre. In addition, new U-Pb zircon ages allowed us to constrain the sedimentary and tectonic processes from Wuchiapingian to Olenekian, possibly extending to Anisian (late Permian to Early Triassic, probably early Middle Triassic). This age range is consistent with the new founding of cf. Dicroidium fossil remains in the lower section of the Puesto Piris Formation. The age and provenance of the Puesto Piris Formation resemble other contemporaneous basins in southern Pangea, suggesting a generalised extensional setting (rifting) linked to active volcanism as part of the post-orogenesis and ending of the Gondwanide Orogen during the Pangea assembly.
Materia
Ciencias de la Tierra (General)
Tectosequence
U-Pb zircon age
Permian-Triassic boundary
Dicroidium
Patagonia
Pangea
Rifting
Ciencias de la Tierra (General)
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:20.500.12049/14455
Acceder
id RIDUNRN_11c10e252c2d75d6608acf0655262cc1
oai_identifier_str oai:rid.unrn.edu.ar:20.500.12049/14455
network_acronym_str RIDUNRN
repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesisGonzález, Santiago NicolásGreco, Gerson AlanCitton, PaoloSuárez, Rodrigo J.Schiappa Pietra, María BelenIson, Juan I.Ciencias de la Tierra (General)TectosequenceU-Pb zircon agePermian-Triassic boundaryDicroidiumPatagoniaPangeaRiftingCiencias de la Tierra (General)Fil: González, Santiago Nicolás. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, ArgentinaFil: Greco, Gerson Alan. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, ArgentinaFil: Citton, Paolo. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, ArgentinaFil: Suárez, Rodrigo J. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, ArgentinaFil: Schiappa Pietra, María Belen. Universidad Nacional de Río Negro – Sede Alto Valle y Valle Medio Localización General Roca (UNRN)Fil: Ison, Juan I. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, ArgentinaFil: González, Santiago Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, ArgentinaFil: Greco, Gerson Alan. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, ArgentinaFil: Citton, Paolo. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, ArgentinaFil: Suárez, Rodrigo J. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, ArgentinaFil: Ison, Juan I. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, ArgentinaWe have studied a syn-rift sedimentary wedge corresponding to Puesto Piris Formation deposited in a half-graben related to the post-orogenic Gondwanide extension during Changhsingian (late Permian) to Triassic in the northeastern Patagonia. The sedimentary succession is in a half-graben depocentre covering a Palaeozoic basement that was probably exhumed during the late Permian. The basal section of the Puesto Piris Formation contains thick levels of conglomerates, almost exclusively composed of basement fragments. The succession continues with arenites, tuffites, and limestones that conformably overlie the conglomerate beds. Red layers of conglomerates and sandstones that are rich in volcanic fragments culminate the succession. We linked the changes in texture and composition along with the sedimentary succession with variations in the tectonic activity of a master fault delimiting the half-graben depocentre. In addition, new U-Pb zircon ages allowed us to constrain the sedimentary and tectonic processes from Wuchiapingian to Olenekian, possibly extending to Anisian (late Permian to Early Triassic, probably early Middle Triassic). This age range is consistent with the new founding of cf. Dicroidium fossil remains in the lower section of the Puesto Piris Formation. The age and provenance of the Puesto Piris Formation resemble other contemporaneous basins in southern Pangea, suggesting a generalised extensional setting (rifting) linked to active volcanism as part of the post-orogenesis and ending of the Gondwanide Orogen during the Pangea assembly.We have studied a syn-rift sedimentary wedge corresponding to Puesto Piris Formation deposited in a half-graben related to the post-orogenic Gondwanide extension during Changhsingian (late Permian) to Triassic in the northeastern Patagonia. The sedimentary succession is in a half-graben depocentre covering a Palaeozoic basement that was probably exhumed during the late Permian. The basal section of the Puesto Piris Formation contains thick levels of conglomerates, almost exclusively composed of basement fragments. The succession continues with arenites, tuffites, and limestones that conformably overlie the conglomerate beds. Red layers of conglomerates and sandstones that are rich in volcanic fragments culminate the succession. We linked the changes in texture and composition along with the sedimentary succession with variations in the tectonic activity of a master fault delimiting the half-graben depocentre. In addition, new U-Pb zircon ages allowed us to constrain the sedimentary and tectonic processes from Wuchiapingian to Olenekian, possibly extending to Anisian (late Permian to Early Triassic, probably early Middle Triassic). This age range is consistent with the new founding of cf. Dicroidium fossil remains in the lower section of the Puesto Piris Formation. The age and provenance of the Puesto Piris Formation resemble other contemporaneous basins in southern Pangea, suggesting a generalised extensional setting (rifting) linked to active volcanism as part of the post-orogenesis and ending of the Gondwanide Orogen during the Pangea assembly.Taylor and Francis2026-03-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfSantiago N. González , Gerson A. Greco , Paolo Citton , Rodrigo J. Suárez , M. Belén Schiappa-Pietra & Juan I. Ison (16 Apr 2026): A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis, International Geology Review, DOI: 10.1080/00206814.2026.26520360020-68141938-2839http://rid.unrn.edu.ar/handle/20.500.12049/14455https://doi.org/10.1080/00206814.2026.2652036engwww.tandfonline.com/journals/tigr20International Geology Reviewinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2026-09-24T12:43:48Zoai:rid.unrn.edu.ar:20.500.12049/14455instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692026-09-24 12:43:50.47RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis
title A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis
spellingShingle A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis
González, Santiago Nicolás
Ciencias de la Tierra (General)
Tectosequence
U-Pb zircon age
Permian-Triassic boundary
Dicroidium
Patagonia
Pangea
Rifting
Ciencias de la Tierra (General)
title_short A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis
title_full A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis
title_fullStr A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis
title_full_unstemmed A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis
title_sort A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis
dc.creator.none.fl_str_mv González, Santiago Nicolás
Greco, Gerson Alan
Citton, Paolo
Suárez, Rodrigo J.
Schiappa Pietra, María Belen
Ison, Juan I.
author González, Santiago Nicolás
author_facet González, Santiago Nicolás
Greco, Gerson Alan
Citton, Paolo
Suárez, Rodrigo J.
Schiappa Pietra, María Belen
Ison, Juan I.
author_role author
author2 Greco, Gerson Alan
Citton, Paolo
Suárez, Rodrigo J.
Schiappa Pietra, María Belen
Ison, Juan I.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias de la Tierra (General)
Tectosequence
U-Pb zircon age
Permian-Triassic boundary
Dicroidium
Patagonia
Pangea
Rifting
Ciencias de la Tierra (General)
topic Ciencias de la Tierra (General)
Tectosequence
U-Pb zircon age
Permian-Triassic boundary
Dicroidium
Patagonia
Pangea
Rifting
Ciencias de la Tierra (General)
dc.description.none.fl_txt_mv Fil: González, Santiago Nicolás. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: Greco, Gerson Alan. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: Citton, Paolo. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: Suárez, Rodrigo J. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: Schiappa Pietra, María Belen. Universidad Nacional de Río Negro – Sede Alto Valle y Valle Medio Localización General Roca (UNRN)
Fil: Ison, Juan I. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
Fil: González, Santiago Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
Fil: Greco, Gerson Alan. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
Fil: Citton, Paolo. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
Fil: Suárez, Rodrigo J. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
Fil: Ison, Juan I. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - CCT Patagonia Confluencia, Neuquén, Argentina
We have studied a syn-rift sedimentary wedge corresponding to Puesto Piris Formation deposited in a half-graben related to the post-orogenic Gondwanide extension during Changhsingian (late Permian) to Triassic in the northeastern Patagonia. The sedimentary succession is in a half-graben depocentre covering a Palaeozoic basement that was probably exhumed during the late Permian. The basal section of the Puesto Piris Formation contains thick levels of conglomerates, almost exclusively composed of basement fragments. The succession continues with arenites, tuffites, and limestones that conformably overlie the conglomerate beds. Red layers of conglomerates and sandstones that are rich in volcanic fragments culminate the succession. We linked the changes in texture and composition along with the sedimentary succession with variations in the tectonic activity of a master fault delimiting the half-graben depocentre. In addition, new U-Pb zircon ages allowed us to constrain the sedimentary and tectonic processes from Wuchiapingian to Olenekian, possibly extending to Anisian (late Permian to Early Triassic, probably early Middle Triassic). This age range is consistent with the new founding of cf. Dicroidium fossil remains in the lower section of the Puesto Piris Formation. The age and provenance of the Puesto Piris Formation resemble other contemporaneous basins in southern Pangea, suggesting a generalised extensional setting (rifting) linked to active volcanism as part of the post-orogenesis and ending of the Gondwanide Orogen during the Pangea assembly.
We have studied a syn-rift sedimentary wedge corresponding to Puesto Piris Formation deposited in a half-graben related to the post-orogenic Gondwanide extension during Changhsingian (late Permian) to Triassic in the northeastern Patagonia. The sedimentary succession is in a half-graben depocentre covering a Palaeozoic basement that was probably exhumed during the late Permian. The basal section of the Puesto Piris Formation contains thick levels of conglomerates, almost exclusively composed of basement fragments. The succession continues with arenites, tuffites, and limestones that conformably overlie the conglomerate beds. Red layers of conglomerates and sandstones that are rich in volcanic fragments culminate the succession. We linked the changes in texture and composition along with the sedimentary succession with variations in the tectonic activity of a master fault delimiting the half-graben depocentre. In addition, new U-Pb zircon ages allowed us to constrain the sedimentary and tectonic processes from Wuchiapingian to Olenekian, possibly extending to Anisian (late Permian to Early Triassic, probably early Middle Triassic). This age range is consistent with the new founding of cf. Dicroidium fossil remains in the lower section of the Puesto Piris Formation. The age and provenance of the Puesto Piris Formation resemble other contemporaneous basins in southern Pangea, suggesting a generalised extensional setting (rifting) linked to active volcanism as part of the post-orogenesis and ending of the Gondwanide Orogen during the Pangea assembly.
description Fil: González, Santiago Nicolás. Instituto de Investigación en Paleobiología y Geología (UNRN – CONICET), General Roca, Río Negro, Argentina
publishDate 2026
dc.date.none.fl_str_mv 2026-03-22
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 Santiago N. González , Gerson A. Greco , Paolo Citton , Rodrigo J. Suárez , M. Belén Schiappa-Pietra & Juan I. Ison (16 Apr 2026): A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis, International Geology Review, DOI: 10.1080/00206814.2026.2652036
0020-6814
1938-2839
http://rid.unrn.edu.ar/handle/20.500.12049/14455
https://doi.org/10.1080/00206814.2026.2652036
identifier_str_mv Santiago N. González , Gerson A. Greco , Paolo Citton , Rodrigo J. Suárez , M. Belén Schiappa-Pietra & Juan I. Ison (16 Apr 2026): A Permian-Triassic extensional wedge in northern Patagonia related to the Gondwanide post-orogenesis, International Geology Review, DOI: 10.1080/00206814.2026.2652036
0020-6814
1938-2839
url http://rid.unrn.edu.ar/handle/20.500.12049/14455
https://doi.org/10.1080/00206814.2026.2652036
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv www.tandfonline.com/journals/tigr20
International Geology Review
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 Taylor and Francis
publisher.none.fl_str_mv Taylor and Francis
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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score 13.265058

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