Multiple geophysical methods used to examine neotectonic structures in the western foothills of the Sierra de El Maitén (Argentina), North Patagonian Andes

A high-resolution geophysical study was carried out in a region of the retroarc of the Patagonian Andes located on the western slope of the Sierra de El Maitén. This structure is characterized by an imbricated west-vergent fault system developed in the orogenic front area of the North Patagonian And...

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Detalles Bibliográficos
Publicado: 2016
Materias:
Gravimetric method
Magnetometric method
Neotectonic structure
Seismic method
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15694445_v14_n3_p255_Klinger
http://hdl.handle.net/20.500.12110/paper_15694445_v14_n3_p255_Klinger
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_15694445_v14_n3_p255_Klinger
record_format dspace
spelling paper:paper_15694445_v14_n3_p255_Klinger2023-06-08T16:24:11Z Multiple geophysical methods used to examine neotectonic structures in the western foothills of the Sierra de El Maitén (Argentina), North Patagonian Andes Gravimetric method Magnetometric method Neotectonic structure Seismic method A high-resolution geophysical study was carried out in a region of the retroarc of the Patagonian Andes located on the western slope of the Sierra de El Maitén. This structure is characterized by an imbricated west-vergent fault system developed in the orogenic front area of the North Patagonian Andes that has uplifted. Oligocene volcanic rocks (Ventana Formation) affect Miocene to Quaternary sediments. Even though neotectonic fault scarps are affecting Quaternary deposits in the foothills of this range, no direct observation of slip in Quaternary strata was determined. The main objective of this study is to determine geometry of recognized neotectonic structures, characterizing them by variations in magnetic susceptibility, density, and p-wave velocities. The combined application of different geophysical methods has allowed the characterization of the bedrock geometry and the determination of neotectonic displacements along faults. The potential field model and its integration with a seismic profile show the accurate geometry of this tectonic zone, which is crucial for seismogenic hazard analysis, in the area of northern Patagonia, a highly significant economic zone due to tourism with several towns (El Maitén, Esquel, and San Carlos de Bariloche) dispersed throughout the area of young tectonic activity. © 2016 European Association of Geoscientists & Engineers. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15694445_v14_n3_p255_Klinger http://hdl.handle.net/20.500.12110/paper_15694445_v14_n3_p255_Klinger
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Gravimetric method
Magnetometric method
Neotectonic structure
Seismic method
spellingShingle Gravimetric method
Magnetometric method
Neotectonic structure
Seismic method
Multiple geophysical methods used to examine neotectonic structures in the western foothills of the Sierra de El Maitén (Argentina), North Patagonian Andes
topic_facet Gravimetric method
Magnetometric method
Neotectonic structure
Seismic method
description A high-resolution geophysical study was carried out in a region of the retroarc of the Patagonian Andes located on the western slope of the Sierra de El Maitén. This structure is characterized by an imbricated west-vergent fault system developed in the orogenic front area of the North Patagonian Andes that has uplifted. Oligocene volcanic rocks (Ventana Formation) affect Miocene to Quaternary sediments. Even though neotectonic fault scarps are affecting Quaternary deposits in the foothills of this range, no direct observation of slip in Quaternary strata was determined. The main objective of this study is to determine geometry of recognized neotectonic structures, characterizing them by variations in magnetic susceptibility, density, and p-wave velocities. The combined application of different geophysical methods has allowed the characterization of the bedrock geometry and the determination of neotectonic displacements along faults. The potential field model and its integration with a seismic profile show the accurate geometry of this tectonic zone, which is crucial for seismogenic hazard analysis, in the area of northern Patagonia, a highly significant economic zone due to tourism with several towns (El Maitén, Esquel, and San Carlos de Bariloche) dispersed throughout the area of young tectonic activity. © 2016 European Association of Geoscientists & Engineers.
title Multiple geophysical methods used to examine neotectonic structures in the western foothills of the Sierra de El Maitén (Argentina), North Patagonian Andes
title_short Multiple geophysical methods used to examine neotectonic structures in the western foothills of the Sierra de El Maitén (Argentina), North Patagonian Andes
title_full Multiple geophysical methods used to examine neotectonic structures in the western foothills of the Sierra de El Maitén (Argentina), North Patagonian Andes
title_fullStr Multiple geophysical methods used to examine neotectonic structures in the western foothills of the Sierra de El Maitén (Argentina), North Patagonian Andes
title_full_unstemmed Multiple geophysical methods used to examine neotectonic structures in the western foothills of the Sierra de El Maitén (Argentina), North Patagonian Andes
title_sort multiple geophysical methods used to examine neotectonic structures in the western foothills of the sierra de el maitén (argentina), north patagonian andes
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15694445_v14_n3_p255_Klinger
http://hdl.handle.net/20.500.12110/paper_15694445_v14_n3_p255_Klinger
_version_ 1768544101555240960

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