Abstract:
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.
Registro:
Documento: |
Artículo
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Título: | Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina |
Autor: | Giambiagi, L.; Martinez, A.N. |
Filiación: | CONICET-IANIGLA Centro Regional de Investigaciones Científicas y Tecnológicas, Parque San Martín s/n, 5500 Mendoza, Argentina Laboratorio de Tectónica Andina, Universidad de Buenos Aires, Departamento de Ciencias Geológicas, Ciudad Universitaria, Pabellon II, 1428 Capital Federal, Argentina
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Palabras clave: | 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 |
Año: | 2008
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Volumen: | 26
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Número: | 3
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Página de inicio: | 252
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Página de fin: | 260
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DOI: |
http://dx.doi.org/10.1016/j.jsames.2008.08.008 |
Título revista: | Journal of South American Earth Sciences
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Título revista abreviado: | J. South Am. Earth Sci.
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ISSN: | 08959811
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08959811_v26_n3_p252_Giambiagi |
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Citas:
---------- APA ----------
Giambiagi, L. & Martinez, A.N.
(2008)
. Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina. Journal of South American Earth Sciences, 26(3), 252-260.
http://dx.doi.org/10.1016/j.jsames.2008.08.008---------- CHICAGO ----------
Giambiagi, L., Martinez, A.N.
"Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina"
. Journal of South American Earth Sciences 26, no. 3
(2008) : 252-260.
http://dx.doi.org/10.1016/j.jsames.2008.08.008---------- MLA ----------
Giambiagi, L., Martinez, A.N.
"Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina"
. Journal of South American Earth Sciences, vol. 26, no. 3, 2008, pp. 252-260.
http://dx.doi.org/10.1016/j.jsames.2008.08.008---------- VANCOUVER ----------
Giambiagi, L., Martinez, A.N. Permo-Triassic oblique extension in the Potrerillos-Uspallata area, western Argentina. J. South Am. Earth Sci. 2008;26(3):252-260.
http://dx.doi.org/10.1016/j.jsames.2008.08.008