The geometry of the active strike-slip El Tigre Fault, Precordillera of San Juan, Central-Western Argentina: Integrating resistivity surveys with structural and geomorphological data

The geometry and related geomorphological features of the right-lateral strike-slip El Tigre Fault, one of the main morphostructural discontinuities in the Central-Western Precordillera of Argentina, were investigated. Achievements of this survey include: recognition of structural and geometrical di...

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Autores principales: Fazzito, S.Y., Cortés, J.M., Rapalini, A.E., Terrizzano, C.M.
Formato: JOUR
Materias:
2D electrical resistivity tomography
Argentine Precordillera
El Tigre Fault
Fault structure
Geomorphology
Neotectonics
active fault
electrical resistivity
fault zone
geometry
geomorphology
neotectonics
strike-slip fault
tomography
transpression
transtension
Argentina
Precordillera
San Juan [Argentina]
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14373254_v102_n5_p1447_Fazzito
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_14373254_v102_n5_p1447_Fazzito
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spelling todo:paper_14373254_v102_n5_p1447_Fazzito2023-10-03T16:15:59Z The geometry of the active strike-slip El Tigre Fault, Precordillera of San Juan, Central-Western Argentina: Integrating resistivity surveys with structural and geomorphological data Fazzito, S.Y. Cortés, J.M. Rapalini, A.E. Terrizzano, C.M. 2D electrical resistivity tomography Argentine Precordillera El Tigre Fault Fault structure Geomorphology Neotectonics active fault electrical resistivity fault zone geometry geomorphology neotectonics strike-slip fault tomography transpression transtension Argentina Precordillera San Juan [Argentina] The geometry and related geomorphological features of the right-lateral strike-slip El Tigre Fault, one of the main morphostructural discontinuities in the Central-Western Precordillera of Argentina, were investigated. Achievements of this survey include: recognition of structural and geometrical discontinuities along the fault trace, identification and classification of landforms associated with local transpressional and transtensional sectors, observation of significant changes in the fault strike and detection of right and left bends of different wavelength. In the Central Segment of the El Tigre Fault, 2D electrical resistivity tomography surveys were carried out across the fault zone. The resistivity imaging permitted to infer the orientation of the main fault surface, the presence of blind fault branches along the fault zone, tectonic tilting of the Quaternary sedimentary cover, subsurface structure of pressure ridges and depth to the water table. Based on this information, it is possible to characterize the El Tigre Fault also as an important hydro-geological barrier. Our survey shows that the main fault surface changes along different segments from a high-angle to a subvertical setting whilst the vertical-slip component is either reverse or normal, depending on the local transpressive or transtensive regime induced by major bends along the trace. These local variations are expressed as sections of a few kilometres in length with relatively homogeneous behaviour and frequently separated by oblique or transversal structures. © 2013 Springer-Verlag Berlin Heidelberg. Fil:Fazzito, S.Y. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cortés, J.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rapalini, A.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Terrizzano, C.M. 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_14373254_v102_n5_p1447_Fazzito
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 2D electrical resistivity tomography
Argentine Precordillera
El Tigre Fault
Fault structure
Geomorphology
Neotectonics
active fault
electrical resistivity
fault zone
geometry
geomorphology
neotectonics
strike-slip fault
tomography
transpression
transtension
Argentina
Precordillera
San Juan [Argentina]
spellingShingle 2D electrical resistivity tomography
Argentine Precordillera
El Tigre Fault
Fault structure
Geomorphology
Neotectonics
active fault
electrical resistivity
fault zone
geometry
geomorphology
neotectonics
strike-slip fault
tomography
transpression
transtension
Argentina
Precordillera
San Juan [Argentina]
Fazzito, S.Y.
Cortés, J.M.
Rapalini, A.E.
Terrizzano, C.M.
The geometry of the active strike-slip El Tigre Fault, Precordillera of San Juan, Central-Western Argentina: Integrating resistivity surveys with structural and geomorphological data
topic_facet 2D electrical resistivity tomography
Argentine Precordillera
El Tigre Fault
Fault structure
Geomorphology
Neotectonics
active fault
electrical resistivity
fault zone
geometry
geomorphology
neotectonics
strike-slip fault
tomography
transpression
transtension
Argentina
Precordillera
San Juan [Argentina]
description The geometry and related geomorphological features of the right-lateral strike-slip El Tigre Fault, one of the main morphostructural discontinuities in the Central-Western Precordillera of Argentina, were investigated. Achievements of this survey include: recognition of structural and geometrical discontinuities along the fault trace, identification and classification of landforms associated with local transpressional and transtensional sectors, observation of significant changes in the fault strike and detection of right and left bends of different wavelength. In the Central Segment of the El Tigre Fault, 2D electrical resistivity tomography surveys were carried out across the fault zone. The resistivity imaging permitted to infer the orientation of the main fault surface, the presence of blind fault branches along the fault zone, tectonic tilting of the Quaternary sedimentary cover, subsurface structure of pressure ridges and depth to the water table. Based on this information, it is possible to characterize the El Tigre Fault also as an important hydro-geological barrier. Our survey shows that the main fault surface changes along different segments from a high-angle to a subvertical setting whilst the vertical-slip component is either reverse or normal, depending on the local transpressive or transtensive regime induced by major bends along the trace. These local variations are expressed as sections of a few kilometres in length with relatively homogeneous behaviour and frequently separated by oblique or transversal structures. © 2013 Springer-Verlag Berlin Heidelberg.
format JOUR
author Fazzito, S.Y.
Cortés, J.M.
Rapalini, A.E.
Terrizzano, C.M.
author_facet Fazzito, S.Y.
Cortés, J.M.
Rapalini, A.E.
Terrizzano, C.M.
author_sort Fazzito, S.Y.
title The geometry of the active strike-slip El Tigre Fault, Precordillera of San Juan, Central-Western Argentina: Integrating resistivity surveys with structural and geomorphological data
title_short The geometry of the active strike-slip El Tigre Fault, Precordillera of San Juan, Central-Western Argentina: Integrating resistivity surveys with structural and geomorphological data
title_full The geometry of the active strike-slip El Tigre Fault, Precordillera of San Juan, Central-Western Argentina: Integrating resistivity surveys with structural and geomorphological data
title_fullStr The geometry of the active strike-slip El Tigre Fault, Precordillera of San Juan, Central-Western Argentina: Integrating resistivity surveys with structural and geomorphological data
title_full_unstemmed The geometry of the active strike-slip El Tigre Fault, Precordillera of San Juan, Central-Western Argentina: Integrating resistivity surveys with structural and geomorphological data
title_sort geometry of the active strike-slip el tigre fault, precordillera of san juan, central-western argentina: integrating resistivity surveys with structural and geomorphological data
url http://hdl.handle.net/20.500.12110/paper_14373254_v102_n5_p1447_Fazzito
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