Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling

Fil: Vigide, Nicolás. Observatorio Argentino de Vigilancia Volcánica (OAVV), Servicio Geológico Minero Argentino (SEGEMAR). Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina.

Detalles Bibliográficos
Autores principales: Vigide, Nicolás, Yagupsky, Daniel, Barcelona, Hernan, Augusto, Mariano, Caselli, Alberto Tomás
Lenguaje:Inglés
Publicado: ElSevier info
Materias:
Ciencias Exactas y Naturales
Structural analysis
Caviahue-copahue volcanic complex
Fault-plane solutions
Stress inversion
Analogue models
Acceso en línea:http://rid.unrn.edu.ar/handle/20.500.12049/10294
https://doi.org/10.1016/j.jsames.2022.104136
Aporte de:
Repositorio Institucional Digital de la Universidad Nacional de Río Negro (UNRN) de Universidad Nacional de Río Negro
id I65-R171-20.500.12049-10294
record_format dspace
institution Universidad Nacional de Río Negro
institution_str I-65
repository_str R-171
collection Repositorio Institucional Digital de la Universidad Nacional de Río Negro (UNRN)
language Inglés
orig_language_str_mv en
topic Ciencias Exactas y Naturales
Structural analysis
Caviahue-copahue volcanic complex
Fault-plane solutions
Stress inversion
Analogue models
Ciencias Exactas y Naturales
spellingShingle Ciencias Exactas y Naturales
Structural analysis
Caviahue-copahue volcanic complex
Fault-plane solutions
Stress inversion
Analogue models
Ciencias Exactas y Naturales
Vigide, Nicolás
Yagupsky, Daniel
Barcelona, Hernan
Augusto, Mariano
Caselli, Alberto Tomás
Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling
topic_facet Ciencias Exactas y Naturales
Structural analysis
Caviahue-copahue volcanic complex
Fault-plane solutions
Stress inversion
Analogue models
Ciencias Exactas y Naturales
description Fil: Vigide, Nicolás. Observatorio Argentino de Vigilancia Volcánica (OAVV), Servicio Geológico Minero Argentino (SEGEMAR). Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina.
author Vigide, Nicolás
Yagupsky, Daniel
Barcelona, Hernan
Augusto, Mariano
Caselli, Alberto Tomás
author_facet Vigide, Nicolás
Yagupsky, Daniel
Barcelona, Hernan
Augusto, Mariano
Caselli, Alberto Tomás
author_sort Vigide, Nicolás
title Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling
title_short Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling
title_full Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling
title_fullStr Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling
title_full_unstemmed Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling
title_sort understanding the caviahue-copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling
publisher ElSevier
publishDate info
url http://rid.unrn.edu.ar/handle/20.500.12049/10294
https://doi.org/10.1016/j.jsames.2022.104136
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spelling I65-R171-20.500.12049-102942023-06-08T13:46:38Z application/pdf info:eu-repo/date/embargoEnd/2026-01-01 info:eu-repo/semantics/embargoedAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ 2023 Fil: Vigide, Nicolás. Observatorio Argentino de Vigilancia Volcánica (OAVV), Servicio Geológico Minero Argentino (SEGEMAR). Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina. Fil: Yagupsky, Daniel. CONICET- IDEAN, Instituto de Estudios Andinos “Don Pablo Groeber”, Universidad de Buenos Aires,. Argentina. Fil: Barcelona, Hernan. CONICET- IDEAN, Instituto de Estudios Andinos “Don Pablo Groeber”, Universidad de Buenos Aires,. Argentina. Fil: Augusto, Mariano. CONICET- IDEAN, Instituto de Estudios Andinos “Don Pablo Groeber”, Universidad de Buenos Aires,. Argentina. Fil: Caselli, Alberto Tomás. Universidad Nacional de Río Negro. Instituto de Investigación en Paleobiología y Geología. Argentina. Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling Vigide, Nicolás Yagupsky, Daniel Barcelona, Hernan Augusto, Mariano Caselli, Alberto Tomás Ciencias Exactas y Naturales Structural analysis Caviahue-copahue volcanic complex Fault-plane solutions Stress inversion Analogue models Ciencias Exactas y Naturales This work aims to study the interaction between two of the most representative structural systems controlling the Caviahue-Copahue volcanic complex. To achieve this objective, a structural analysis based on outcrop-scale fault-slip data field surveys and analogue models were carried out. The deformation regime acting on the studied area was characterized, and the associated paleostresses were obtained from the kinematic data inversion. The performed analysis in Caviahue-Copahue volcanic complex allowed to define two main sets of faults controlling the deformation of the area: NE-SW to ENE-WSW, and WNW-ESE to NW-SE, respectively. The first group comprises high-angle normal faults, resulting in a horst-and-graben setting with along-strike lengths up to 2 km. The second group shows strike-slip kinematics with a minor normal component. These NW-SE faults are related to the Miocene-Pliocene fissure-related volcanism and define the major caldera axis direction. In the geothermal area, the obtained paleostress orientation shows a consistent vertical σ1, denoting a local extensional regime. Regarding the geothermal field, the NE-SW extensional fault system is proposed as the main circulation pathways for hydrothermal fluids rising to the surface. The major NW-SE faults would act as barriers for this circulation. The set of analogous experiments was used to contrast the obtained local structural kinematic results. Two non-coaxial extensional events were established to achieve a local scale approach to the structural configuration observed in the area. Simulations aimed to understand the structural behavior of the superposition of non-coaxial extensive events; they allowed us to assess the role of the different fault sets surveyed in the field within the system. Particularly, our findings support that the NW-SE-oriented structures compartmentalize the subsequent NE-SW-oriented faults, acting on occasions as transfer zones. true This work aims to study the interaction between two of the most representative structural systems controlling the Caviahue-Copahue volcanic complex. To achieve this objective, a structural analysis based on outcrop-scale fault-slip data field surveys and analogue models were carried out. The deformation regime acting on the studied area was characterized, and the associated paleostresses were obtained from the kinematic data inversion. The performed analysis in Caviahue-Copahue volcanic complex allowed to define two main sets of faults controlling the deformation of the area: NE-SW to ENE-WSW, and WNW-ESE to NW-SE, respectively. The first group comprises high-angle normal faults, resulting in a horst-and-graben setting with along-strike lengths up to 2 km. The second group shows strike-slip kinematics with a minor normal component. These NW-SE faults are related to the Miocene-Pliocene fissure-related volcanism and define the major caldera axis direction. In the geothermal area, the obtained paleostress orientation shows a consistent vertical σ1, denoting a local extensional regime. Regarding the geothermal field, the NE-SW extensional fault system is proposed as the main circulation pathways for hydrothermal fluids rising to the surface. The major NW-SE faults would act as barriers for this circulation. The set of analogous experiments was used to contrast the obtained local structural kinematic results. Two non-coaxial extensional events were established to achieve a local scale approach to the structural configuration observed in the area. Simulations aimed to understand the structural behavior of the superposition of non-coaxial extensive events; they allowed us to assess the role of the different fault sets surveyed in the field within the system. Particularly, our findings support that the NW-SE-oriented structures compartmentalize the subsequent NE-SW-oriented faults, acting on occasions as transfer zones. Vigide N., Yagupsky D., Barcelona H, Agusto M., Caselli A., (2022). Understanding the Caviahue-Copahue volcanic complex through kinematic solutions, paleotensors and analogue modelling. Journal of South American Earth Sciences. https://doi.org/10.1016/j.jsames.2022.104136 1873-0647 0895-9811 http://rid.unrn.edu.ar/handle/20.500.12049/10294 https://doi.org/10.1016/j.jsames.2022.104136 en https://www.sciencedirect.com/journal/journal-of-south-american-earth-sciences 121 Journal of South American Earth Sciences ElSevier

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