Stratigraphy of the central sector of the Loncopué Trough: The Quaternary depocenter of the Huecú (Western sector of the Neuquén basin)

The Huecú depocenter is located in the central sector of the Loncopué trough in western Neuquén. This basin is composed of volcanic, volcaniclastic, fluvial and lacustrine deposits, younger than 1.6 Ma encompassing postglacial and even historical sediments and lavas. During most of its evolution, th...

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Detalles Bibliográficos
Autores principales: Rojas Vera, Emilio A., Folguera, Andrés, Ramos, Victor Alberto
Publicado: 2009
Materias:
Extensional deformation
Historic floods
Pull-apart basin
Retroarc volcanism
basin evolution
caldera
deformation
extensional tectonics
lacustrine deposit
Last Glacial
lava flow
Pliocene
Quaternary
stratigraphy
stratovolcano
trough
Argentina
Neuquen Basin
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v65_n2_p400_RojasVera
http://hdl.handle.net/20.500.12110/paper_00044822_v65_n2_p400_RojasVera
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00044822_v65_n2_p400_RojasVera
record_format dspace
spelling paper:paper_00044822_v65_n2_p400_RojasVera2023-06-08T14:26:19Z Stratigraphy of the central sector of the Loncopué Trough: The Quaternary depocenter of the Huecú (Western sector of the Neuquén basin) Rojas Vera, Emilio A. Folguera, Andrés Ramos, Victor Alberto Extensional deformation Historic floods Pull-apart basin Retroarc volcanism basin evolution caldera deformation extensional tectonics lacustrine deposit Last Glacial lava flow Pliocene Quaternary stratigraphy stratovolcano trough Argentina Neuquen Basin The Huecú depocenter is located in the central sector of the Loncopué trough in western Neuquén. This basin is composed of volcanic, volcaniclastic, fluvial and lacustrine deposits, younger than 1.6 Ma encompassing postglacial and even historical sediments and lavas. During most of its evolution, the Huecú depocenter has constituted a small closed depression (pullapart basin) restricted to the Loncopué trough, a major extensional retroarc basin in the Central and Patagonian Andes. This basin was fed from the north since the beginning of its evolution by a series of big amalgamated post-Pliocene stratovolcanoes located in the Mandolegüe Cordillera. The basin was also filled by fissural lava flows originated in the Agrio caldera located to the east grouped in the Escorial Basalt of 1.6 to 0.8 Ma. Polygenetic volcanic products form in the region big stratovolcanoes among which the Trolón and Colorado volcanic centers were the most prominent. These centers of Pleistocene age were highly eroded by the last glacial activity that affected the region. Nearly at the end of the glacial period two fissural volcanic fields covered the Huecú depocenter corresponding to the Rankül-Lom Basalt and preglacial Tres Hermanos basalts. Finally postglacial volcanic lavas covered most of the Huecú depocenter. These were grouped in the Cerro Artillería Basalts and postglacial Tres Hermanos basalt, which have recurrently dammed the main fluvial basins in the area. The fluvial and lacustrine deposits are represented by El Huecú and Mar Pequeño Formations. Fil:Rojas Vera, E.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Folguera, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v65_n2_p400_RojasVera http://hdl.handle.net/20.500.12110/paper_00044822_v65_n2_p400_RojasVera
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Extensional deformation
Historic floods
Pull-apart basin
Retroarc volcanism
basin evolution
caldera
deformation
extensional tectonics
lacustrine deposit
Last Glacial
lava flow
Pliocene
Quaternary
stratigraphy
stratovolcano
trough
Argentina
Neuquen Basin
spellingShingle Extensional deformation
Historic floods
Pull-apart basin
Retroarc volcanism
basin evolution
caldera
deformation
extensional tectonics
lacustrine deposit
Last Glacial
lava flow
Pliocene
Quaternary
stratigraphy
stratovolcano
trough
Argentina
Neuquen Basin
Rojas Vera, Emilio A.
Folguera, Andrés
Ramos, Victor Alberto
Stratigraphy of the central sector of the Loncopué Trough: The Quaternary depocenter of the Huecú (Western sector of the Neuquén basin)
topic_facet Extensional deformation
Historic floods
Pull-apart basin
Retroarc volcanism
basin evolution
caldera
deformation
extensional tectonics
lacustrine deposit
Last Glacial
lava flow
Pliocene
Quaternary
stratigraphy
stratovolcano
trough
Argentina
Neuquen Basin
description The Huecú depocenter is located in the central sector of the Loncopué trough in western Neuquén. This basin is composed of volcanic, volcaniclastic, fluvial and lacustrine deposits, younger than 1.6 Ma encompassing postglacial and even historical sediments and lavas. During most of its evolution, the Huecú depocenter has constituted a small closed depression (pullapart basin) restricted to the Loncopué trough, a major extensional retroarc basin in the Central and Patagonian Andes. This basin was fed from the north since the beginning of its evolution by a series of big amalgamated post-Pliocene stratovolcanoes located in the Mandolegüe Cordillera. The basin was also filled by fissural lava flows originated in the Agrio caldera located to the east grouped in the Escorial Basalt of 1.6 to 0.8 Ma. Polygenetic volcanic products form in the region big stratovolcanoes among which the Trolón and Colorado volcanic centers were the most prominent. These centers of Pleistocene age were highly eroded by the last glacial activity that affected the region. Nearly at the end of the glacial period two fissural volcanic fields covered the Huecú depocenter corresponding to the Rankül-Lom Basalt and preglacial Tres Hermanos basalts. Finally postglacial volcanic lavas covered most of the Huecú depocenter. These were grouped in the Cerro Artillería Basalts and postglacial Tres Hermanos basalt, which have recurrently dammed the main fluvial basins in the area. The fluvial and lacustrine deposits are represented by El Huecú and Mar Pequeño Formations.
author Rojas Vera, Emilio A.
Folguera, Andrés
Ramos, Victor Alberto
author_facet Rojas Vera, Emilio A.
Folguera, Andrés
Ramos, Victor Alberto
author_sort Rojas Vera, Emilio A.
title Stratigraphy of the central sector of the Loncopué Trough: The Quaternary depocenter of the Huecú (Western sector of the Neuquén basin)
title_short Stratigraphy of the central sector of the Loncopué Trough: The Quaternary depocenter of the Huecú (Western sector of the Neuquén basin)
title_full Stratigraphy of the central sector of the Loncopué Trough: The Quaternary depocenter of the Huecú (Western sector of the Neuquén basin)
title_fullStr Stratigraphy of the central sector of the Loncopué Trough: The Quaternary depocenter of the Huecú (Western sector of the Neuquén basin)
title_full_unstemmed Stratigraphy of the central sector of the Loncopué Trough: The Quaternary depocenter of the Huecú (Western sector of the Neuquén basin)
title_sort stratigraphy of the central sector of the loncopué trough: the quaternary depocenter of the huecú (western sector of the neuquén basin)
publishDate 2009
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00044822_v65_n2_p400_RojasVera
http://hdl.handle.net/20.500.12110/paper_00044822_v65_n2_p400_RojasVera
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AT folgueraandres stratigraphyofthecentralsectoroftheloncopuetroughthequaternarydepocenterofthehuecuwesternsectoroftheneuquenbasin
AT ramosvictoralberto stratigraphyofthecentralsectoroftheloncopuetroughthequaternarydepocenterofthehuecuwesternsectoroftheneuquenbasin
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