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Capítulo de Libro

Upper Pliocene to Lower Pleistocene volcanic complexes and Upper Neogene deformation in the south-central Andes (36°30′-38°S)

Título del libro: Evolution of an Andean Margin : A Tectonic and Magmatic View from the Andes to the Neuquén Basin (35°-39°S lat)

Miranda, Fernando; Folguera Telichevsky, AndresIcon ; Leal, Pablo RodrigoIcon ; Naranjo, José Antonio; Pesce, Abel
Otros responsables: Mahlburg Kay, Suzanne; Ramos, Victor AlbertoIcon
Fecha de publicación: 2006
Editorial: Geological Society of America
ISBN: 9780813724072
Idioma: Inglés
Clasificación temática:
Geología

Resumen

The Agrio (37º51´S-70º26´W), Vilú Mallín (37º28´S-70º45´W), Trohunco (37º18´S-71º01´W), Domuyo (36º38´S-70º26´W) and Los Cardos-Centinela (37º06´S-70º52´W) volcanic complexes in Argentina are the principal Upper Pliocene to Lower Pleistocene volcanic complexes that occur in the Main Andean Cordillera east of the modern volcanic front in Chile, in the Southern Volcanic zone.Volcanic rocks from these centers along with their stratigraphic relations with nearby Neogene volcanic units provide constraints on the age and style of Neogene deformation in the modern backarc of the Southern Volcanic Zone between 36°30´ and 38°S. New and published radiometric ages and stratigraphic and structural relations show that the region was affected by a latest Miocene compressional deformation that took place between 9 and 6.8 Ma.A heterogeneous picture emerges for the younger deformation of the region which lies along the Quaternary orogenic front.The most important structures include a NNW-trending fault system that joins the Trohunco and Los Cardos-Centinela complexes and is characterized by compressive deformation, and a NE-trending extensional fault system along which the Agrio caldera, Vilú Mallín and Domuyo volcanic complexes are aligned. Overall, the backarc in this region was affected by compressional deformation in the late Miocene and subjected to tectonic collapse and transpressional deformation during the late Pliocene to Quaternary.
Palabras clave: arco magmatico , tectonica
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/106161
DOI: http://dx.doi.org/10.1130/2006.2407(13)
URL: https://pubs.geoscienceworld.org/books/book/564/chapter/3802999/Upper-Pliocene-t
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Capítulos de libros de INSTITUTO DE ESTUDIOS ANDINOS "DON PABLO GROEBER"
Citación
Miranda, Fernando; Folguera Telichevsky, Andres; Leal, Pablo Rodrigo; Naranjo, José Antonio; Pesce, Abel; Upper Pliocene to Lower Pleistocene volcanic complexes and Upper Neogene deformation in the south-central Andes (36°30′-38°S); Geological Society of America; 407; 2006; 287-298
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