Tectonic evolution of the Loncopué trough: Structure of the Quaternary Huecú depocenter and its relation to the sedimentation and volcanism

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The Huecú basin is located at the central part of the large Loncopué retroarc trough. Its volcanic, volcaniclastic, lacustrine and fluvial filling is directly related to neotectonic activity in the area. The basaltic eruptions are reflecting different pulses associated with the development of extens...

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Autores principales: Vera, E.A.R., Folguera, A., Gímenez, M., Martínez, P., Ruiz, F., Ramos, V.A.
Formato: JOUR
Materias:
Andes
Damming
Loncopué
Neotectonics
Volcanism
deformation
depocenter
extensional tectonics
fault
neotectonics
Quaternary
sedimentation
seismic method
tectonic evolution
trough
volcanic eruption
volcanism
Agrio River [Neuquen]
Argentina
Neuquen
South America
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v64_n2_p214_Vera
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00044822_v64_n2_p214_Vera
record_format dspace
spelling todo:paper_00044822_v64_n2_p214_Vera2023-10-03T13:58:29Z Tectonic evolution of the Loncopué trough: Structure of the Quaternary Huecú depocenter and its relation to the sedimentation and volcanism Vera, E.A.R. Folguera, A. Gímenez, M. Martínez, P. Ruiz, F. Ramos, V.A. Andes Damming Loncopué Neotectonics Volcanism deformation depocenter extensional tectonics fault neotectonics Quaternary sedimentation seismic method tectonic evolution trough volcanic eruption volcanism Agrio River [Neuquen] Andes Argentina Neuquen South America The Huecú basin is located at the central part of the large Loncopué retroarc trough. Its volcanic, volcaniclastic, lacustrine and fluvial filling is directly related to neotectonic activity in the area. The basaltic eruptions are reflecting different pulses associated with the development of extensional faults and tensional fractures. Geophysical potential methods have identified basement involvement in the extensional deformation that affected the Tertiary sequences of the area during the last 5 Mys. Neotectonic features in Quaternary volcanic sequences suggest the persistence of these subsidence mechanisms in the Huecú depocenter. These faults are directly connected to the basement segmentation identified by gravimetric and mag-netometric studies. The historical floods produced by the Agrio river damming, are related to fisural eruptions and demons-trate the high probability that retroarc volcanic eruptions may occur again. The recognition of flooded areas that are forming the youngest sedimentary levels in the Huecú depocenter shows potential areas of active retroarc spreading in the Neuquén area associated with neotectonic and seismic processes. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v64_n2_p214_Vera
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
Damming
Loncopué
Neotectonics
Volcanism
deformation
depocenter
extensional tectonics
fault
neotectonics
Quaternary
sedimentation
seismic method
tectonic evolution
trough
volcanic eruption
volcanism
Agrio River [Neuquen]
Andes
Argentina
Neuquen
South America
spellingShingle Andes
Damming
Loncopué
Neotectonics
Volcanism
deformation
depocenter
extensional tectonics
fault
neotectonics
Quaternary
sedimentation
seismic method
tectonic evolution
trough
volcanic eruption
volcanism
Agrio River [Neuquen]
Andes
Argentina
Neuquen
South America
Vera, E.A.R.
Folguera, A.
Gímenez, M.
Martínez, P.
Ruiz, F.
Ramos, V.A.
Tectonic evolution of the Loncopué trough: Structure of the Quaternary Huecú depocenter and its relation to the sedimentation and volcanism
topic_facet Andes
Damming
Loncopué
Neotectonics
Volcanism
deformation
depocenter
extensional tectonics
fault
neotectonics
Quaternary
sedimentation
seismic method
tectonic evolution
trough
volcanic eruption
volcanism
Agrio River [Neuquen]
Andes
Argentina
Neuquen
South America
description The Huecú basin is located at the central part of the large Loncopué retroarc trough. Its volcanic, volcaniclastic, lacustrine and fluvial filling is directly related to neotectonic activity in the area. The basaltic eruptions are reflecting different pulses associated with the development of extensional faults and tensional fractures. Geophysical potential methods have identified basement involvement in the extensional deformation that affected the Tertiary sequences of the area during the last 5 Mys. Neotectonic features in Quaternary volcanic sequences suggest the persistence of these subsidence mechanisms in the Huecú depocenter. These faults are directly connected to the basement segmentation identified by gravimetric and mag-netometric studies. The historical floods produced by the Agrio river damming, are related to fisural eruptions and demons-trate the high probability that retroarc volcanic eruptions may occur again. The recognition of flooded areas that are forming the youngest sedimentary levels in the Huecú depocenter shows potential areas of active retroarc spreading in the Neuquén area associated with neotectonic and seismic processes.
format JOUR
author Vera, E.A.R.
Folguera, A.
Gímenez, M.
Martínez, P.
Ruiz, F.
Ramos, V.A.
author_facet Vera, E.A.R.
Folguera, A.
Gímenez, M.
Martínez, P.
Ruiz, F.
Ramos, V.A.
author_sort Vera, E.A.R.
title Tectonic evolution of the Loncopué trough: Structure of the Quaternary Huecú depocenter and its relation to the sedimentation and volcanism
title_short Tectonic evolution of the Loncopué trough: Structure of the Quaternary Huecú depocenter and its relation to the sedimentation and volcanism
title_full Tectonic evolution of the Loncopué trough: Structure of the Quaternary Huecú depocenter and its relation to the sedimentation and volcanism
title_fullStr Tectonic evolution of the Loncopué trough: Structure of the Quaternary Huecú depocenter and its relation to the sedimentation and volcanism
title_full_unstemmed Tectonic evolution of the Loncopué trough: Structure of the Quaternary Huecú depocenter and its relation to the sedimentation and volcanism
title_sort tectonic evolution of the loncopué trough: structure of the quaternary huecú depocenter and its relation to the sedimentation and volcanism
url http://hdl.handle.net/20.500.12110/paper_00044822_v64_n2_p214_Vera
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AT gimenezm tectonicevolutionoftheloncopuetroughstructureofthequaternaryhuecudepocenteranditsrelationtothesedimentationandvolcanism
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AT ruizf tectonicevolutionoftheloncopuetroughstructureofthequaternaryhuecudepocenteranditsrelationtothesedimentationandvolcanism
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