The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S)

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The Andes located in the central Neuquén (38°-39°S), which belong to the southern Central Andes (35°-39°S), have recorded a similar chronology of uplift than the neighbor northern Patagonian Andes (39°-46°S), Both areas have been formed trough successive phases of contraction in the Late Cretaceous,...

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Autores principales:	Morabito, E.G., Folguera, A.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2005
Materias:	Copahue-pino hachado block Episodic behavior Loncopué trough Tectonic evolution Cretaceous episodic event fold and thrust belt geochronology Miocene morphostructure Oligocene orogeny Pliocene tectonic evolution trough uplift Andes Argentina Chile Copahue Hachado Pass Neuquen Neuquen Basin Patagonia South America
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00044822_v60_n4_p742_Morabito
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paperaa:paper_00044822_v60_n4_p742_Morabito
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spelling	paperaa:paper_00044822_v60_n4_p742_Morabito2023-06-12T16:40:08Z The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S) Rev. Asoc. Geol. Argent. 2005;60(4):742-761 Morabito, E.G. Folguera, A. Copahue-pino hachado block Episodic behavior Loncopué trough Tectonic evolution Cretaceous episodic event fold and thrust belt geochronology Miocene morphostructure Oligocene orogeny Pliocene tectonic evolution trough uplift Andes Argentina Chile Copahue Hachado Pass Neuquen Neuquen Basin Patagonia South America The Andes located in the central Neuquén (38°-39°S), which belong to the southern Central Andes (35°-39°S), have recorded a similar chronology of uplift than the neighbor northern Patagonian Andes (39°-46°S), Both areas have been formed trough successive phases of contraction in the Late Cretaceous, Middle Eocene and Late Miocene respectively. However, the Neuquén Andes have experienced two discrete phases of orogenic relaxation, during the Late Oligocene and Pliocene-Quaternary, which make then distinctive respect to the area located to the south. Field studies have shown new evidences of an episodic behavior of the fold and thrust belt in Neuquen, corresponding to compressive phases followed by stages of crustal collapse, at least since the Middle Cretaceous. The study of two main morphostructural units in the arc and retroarc area at 37°-39°S, the Alto de Copahue Pino Hachado, and its continuation to the north in the Chilean Andes (Laguna de la Laja), and the Loncopué trough respectively exemplify this particular behavior. A structural and a stratigraphie study in those areas have given a new evolutionary framework for the Neuquén Andes. © 2005 Asociación Geológica Argentina. Fil:Folguera, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2005 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v60_n4_p742_Morabito
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Inglés
orig_language_str_mv	eng
topic	Copahue-pino hachado block Episodic behavior Loncopué trough Tectonic evolution Cretaceous episodic event fold and thrust belt geochronology Miocene morphostructure Oligocene orogeny Pliocene tectonic evolution trough uplift Andes Argentina Chile Copahue Hachado Pass Neuquen Neuquen Basin Patagonia South America
spellingShingle	Copahue-pino hachado block Episodic behavior Loncopué trough Tectonic evolution Cretaceous episodic event fold and thrust belt geochronology Miocene morphostructure Oligocene orogeny Pliocene tectonic evolution trough uplift Andes Argentina Chile Copahue Hachado Pass Neuquen Neuquen Basin Patagonia South America Morabito, E.G. Folguera, A. The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S)
topic_facet	Copahue-pino hachado block Episodic behavior Loncopué trough Tectonic evolution Cretaceous episodic event fold and thrust belt geochronology Miocene morphostructure Oligocene orogeny Pliocene tectonic evolution trough uplift Andes Argentina Chile Copahue Hachado Pass Neuquen Neuquen Basin Patagonia South America
description	The Andes located in the central Neuquén (38°-39°S), which belong to the southern Central Andes (35°-39°S), have recorded a similar chronology of uplift than the neighbor northern Patagonian Andes (39°-46°S), Both areas have been formed trough successive phases of contraction in the Late Cretaceous, Middle Eocene and Late Miocene respectively. However, the Neuquén Andes have experienced two discrete phases of orogenic relaxation, during the Late Oligocene and Pliocene-Quaternary, which make then distinctive respect to the area located to the south. Field studies have shown new evidences of an episodic behavior of the fold and thrust belt in Neuquen, corresponding to compressive phases followed by stages of crustal collapse, at least since the Middle Cretaceous. The study of two main morphostructural units in the arc and retroarc area at 37°-39°S, the Alto de Copahue Pino Hachado, and its continuation to the north in the Chilean Andes (Laguna de la Laja), and the Loncopué trough respectively exemplify this particular behavior. A structural and a stratigraphie study in those areas have given a new evolutionary framework for the Neuquén Andes. © 2005 Asociación Geológica Argentina.
format	Artículo Artículo publishedVersion
author	Morabito, E.G. Folguera, A.
author_facet	Morabito, E.G. Folguera, A.
author_sort	Morabito, E.G.
title	The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S)
title_short	The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S)
title_full	The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S)
title_fullStr	The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S)
title_full_unstemmed	The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S)
title_sort	copahue-pino hachado high and the loncopuè trough: an episodic tectonic behaviour, neuquén andes (37°-39°s)
publishDate	2005
url	http://hdl.handle.net/20.500.12110/paper_00044822_v60_n4_p742_Morabito
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The Copahue-Pino Hachado high and the Loncopuè trough: An episodic tectonic behaviour, Neuquén Andes (37°-39°S)

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