Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina

The Permo-Triassic evolution of southwestern South America was characterized by the development of a great amount of volcanism under extensional conditions. Structural analyses of faults developed contemporaneously with this volcanism in the key area of Potrerillos-Uspallata suggest the existence of...

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Detalles Bibliográficos
Autores principales: Giambiagi, L., Martinez, A.N.
Formato: JOUR
Materias:
Andes
Choiyoi Group
Lithospheric anisotropy
Oblique extension
Permo-Triassic volcanism
displacement
extensional tectonics
lithospheric structure
normal fault
oblique fault
orogenic belt
Permian-Triassic boundary
rifting
structural control
suture zone
tectonic evolution
volcanism
Argentina
Mendoza
Potrerillos
South America
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08959811_v26_n3_p252_Giambiagi
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_08959811_v26_n3_p252_Giambiagi
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spelling todo:paper_08959811_v26_n3_p252_Giambiagi2023-10-03T15:42:48Z Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina Giambiagi, L. Martinez, A.N. Andes Choiyoi Group Lithospheric anisotropy Oblique extension Permo-Triassic volcanism displacement extensional tectonics lithospheric structure normal fault oblique fault orogenic belt Permian-Triassic boundary rifting structural control suture zone tectonic evolution volcanism Andes Argentina Mendoza Potrerillos South America The Permo-Triassic evolution of southwestern South America was characterized by the development of a great amount of volcanism under extensional conditions. Structural analyses of faults developed contemporaneously with this volcanism in the key area of Potrerillos-Uspallata suggest the existence of an oblique extensional setting controlled by the presence of a pre-existing lithospheric anisotropy. A clear parallelism between the trace of an inferred Devonian suture zone, the Late Paleozoic San Rafael orogenic belt and the Permo-Triassic rifting suggests that Early and Late Paleozoic tectonic inheritance permitted the reactivation of a NNW-trending zone of lithospheric weakness. The reactivation of this pre-existing weak zone during Late Permian to Early Triassic times has resulted in the generation of a new complex fault system, which concentrated the oblique-slip normal displacement related to a NNE-SSW stretching (N23°E). © 2008 Elsevier Ltd. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08959811_v26_n3_p252_Giambiagi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Andes
Choiyoi Group
Lithospheric anisotropy
Oblique extension
Permo-Triassic volcanism
displacement
extensional tectonics
lithospheric structure
normal fault
oblique fault
orogenic belt
Permian-Triassic boundary
rifting
structural control
suture zone
tectonic evolution
volcanism
Andes
Argentina
Mendoza
Potrerillos
South America
spellingShingle Andes
Choiyoi Group
Lithospheric anisotropy
Oblique extension
Permo-Triassic volcanism
displacement
extensional tectonics
lithospheric structure
normal fault
oblique fault
orogenic belt
Permian-Triassic boundary
rifting
structural control
suture zone
tectonic evolution
volcanism
Andes
Argentina
Mendoza
Potrerillos
South America
Giambiagi, L.
Martinez, A.N.
Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina
topic_facet Andes
Choiyoi Group
Lithospheric anisotropy
Oblique extension
Permo-Triassic volcanism
displacement
extensional tectonics
lithospheric structure
normal fault
oblique fault
orogenic belt
Permian-Triassic boundary
rifting
structural control
suture zone
tectonic evolution
volcanism
Andes
Argentina
Mendoza
Potrerillos
South America
description The Permo-Triassic evolution of southwestern South America was characterized by the development of a great amount of volcanism under extensional conditions. Structural analyses of faults developed contemporaneously with this volcanism in the key area of Potrerillos-Uspallata suggest the existence of an oblique extensional setting controlled by the presence of a pre-existing lithospheric anisotropy. A clear parallelism between the trace of an inferred Devonian suture zone, the Late Paleozoic San Rafael orogenic belt and the Permo-Triassic rifting suggests that Early and Late Paleozoic tectonic inheritance permitted the reactivation of a NNW-trending zone of lithospheric weakness. The reactivation of this pre-existing weak zone during Late Permian to Early Triassic times has resulted in the generation of a new complex fault system, which concentrated the oblique-slip normal displacement related to a NNE-SSW stretching (N23°E). © 2008 Elsevier Ltd. All rights reserved.
format JOUR
author Giambiagi, L.
Martinez, A.N.
author_facet Giambiagi, L.
Martinez, A.N.
author_sort Giambiagi, L.
title Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina
title_short Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina
title_full Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina
title_fullStr Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina
title_full_unstemmed Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina
title_sort permo-triassic oblique extension in the potrerillos-uspallata area, western argentina
url http://hdl.handle.net/20.500.12110/paper_08959811_v26_n3_p252_Giambiagi
work_keys_str_mv AT giambiagil permotriassicobliqueextensioninthepotrerillosuspallataareawesternargentina
AT martinezan permotriassicobliqueextensioninthepotrerillosuspallataareawesternargentina
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