Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)

Autores
Arnous, Ahmad; Zeckra, Martin; Venerdini, Agostina Lia; Alvarado, Patricia Monica; Arrowsmith, Ramón; Guillemoteau, Julien; Landgraf, Angela; Gutiérrez, Antonio; Strecker, Manfred R.
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Uplift in the broken Andean foreland of the Argentine Santa Bárbara System (SBS) is associated with the contractional reactivationof basement anisotropies, similar to those reported from the thick-skinned Cretaceous-Eocene Laramide province of NorthAmerica. Fault scarps, deformed Quaternary deposits and landforms, disrupted drainage patterns, and medium-sizedearthquakes within the SBS suggest that movement along these structures may be a recurring phenomenon, with yet to bedefined repeat intervals and rupture lengths. In contrast to the Subandes thrust belt farther north, where eastward-migratingdeformation has generated a well-defined thrust front, the SBS records spatiotemporally disparate deformation along structuresthat are only known to the first order. We present herein the results of geomorphic desktop analyses, structural fieldobservations, and 2D electrical resistivity tomography and seismic-refraction tomography surveys and an interpretation ofseismic reflection profiles across suspected fault scarps in the sedimentary basins adjacent to the Candelaria Range (CR)basement uplift, in the south-central part of the SBS. Our analysis in the CR piedmont areas reveals consistency between theresults of near-surface electrical resistivity and seismic-refraction tomography surveys, the locations of prominent fault scarps,and structural geometries at greater depth imaged by seismic reflection data. We suggest that this deformation is driven bydeep-seated blind thrusting beneath the CR and associated regional warping, while shortening involving Mesozoic and Cenozoicsedimentary strata in the adjacent basins was accommodated by layer-parallel folding and flexural-slip faults that cut throughQuaternary landforms and deposits at the surface.
Fil: Arnous, Ahmad. Instituto Miguel Lillo, Universidad Nacional de Tucumán; Argentina. University Of Postdam; Alemania
Fil: Zeckra, Martin. University Of Postdam; Alemania
Fil: Venerdini, Agostina Lia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Alvarado, Patricia Monica. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Arrowsmith, Ramón. School Of Earth And Space Exploration, Arizona State Un; Estados Unidos
Fil: Guillemoteau, Julien. University Of Postdam; Alemania
Fil: Landgraf, Angela. University Of Postdam; Alemania
Fil: Gutiérrez, Antonio. Instituto Miguel Lillo, Universidad Nacional de Tucumán; Argentina
Fil: Strecker, Manfred R.. University Of Postdam; Alemania
Materia
Neotectonic
Santa Bárbara System
Seismic Refraction
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/143979
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)Arnous, AhmadZeckra, MartinVenerdini, Agostina LiaAlvarado, Patricia MonicaArrowsmith, RamónGuillemoteau, JulienLandgraf, AngelaGutiérrez, AntonioStrecker, Manfred R.NeotectonicSanta Bárbara SystemSeismic Refractionhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Uplift in the broken Andean foreland of the Argentine Santa Bárbara System (SBS) is associated with the contractional reactivationof basement anisotropies, similar to those reported from the thick-skinned Cretaceous-Eocene Laramide province of NorthAmerica. Fault scarps, deformed Quaternary deposits and landforms, disrupted drainage patterns, and medium-sizedearthquakes within the SBS suggest that movement along these structures may be a recurring phenomenon, with yet to bedefined repeat intervals and rupture lengths. In contrast to the Subandes thrust belt farther north, where eastward-migratingdeformation has generated a well-defined thrust front, the SBS records spatiotemporally disparate deformation along structuresthat are only known to the first order. We present herein the results of geomorphic desktop analyses, structural fieldobservations, and 2D electrical resistivity tomography and seismic-refraction tomography surveys and an interpretation ofseismic reflection profiles across suspected fault scarps in the sedimentary basins adjacent to the Candelaria Range (CR)basement uplift, in the south-central part of the SBS. Our analysis in the CR piedmont areas reveals consistency between theresults of near-surface electrical resistivity and seismic-refraction tomography surveys, the locations of prominent fault scarps,and structural geometries at greater depth imaged by seismic reflection data. We suggest that this deformation is driven bydeep-seated blind thrusting beneath the CR and associated regional warping, while shortening involving Mesozoic and Cenozoicsedimentary strata in the adjacent basins was accommodated by layer-parallel folding and flexural-slip faults that cut throughQuaternary landforms and deposits at the surface.Fil: Arnous, Ahmad. Instituto Miguel Lillo, Universidad Nacional de Tucumán; Argentina. University Of Postdam; AlemaniaFil: Zeckra, Martin. University Of Postdam; AlemaniaFil: Venerdini, Agostina Lia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Alvarado, Patricia Monica. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Arrowsmith, Ramón. School Of Earth And Space Exploration, Arizona State Un; Estados UnidosFil: Guillemoteau, Julien. University Of Postdam; AlemaniaFil: Landgraf, Angela. University Of Postdam; AlemaniaFil: Gutiérrez, Antonio. Instituto Miguel Lillo, Universidad Nacional de Tucumán; ArgentinaFil: Strecker, Manfred R.. University Of Postdam; AlemaniaGeoScienceWorld2020-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/143979Arnous, Ahmad; Zeckra, Martin; Venerdini, Agostina Lia; Alvarado, Patricia Monica; Arrowsmith, Ramón; et al.; Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S); GeoScienceWorld; Lithosphere; 1; 9-2020; 8888588, 1-251941-82641947-4253CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/gsa/lithosphere/article/2020/1/1/591022/Neotectonic-Activity-in-the-LowStrain-Brokeninfo:eu-repo/semantics/altIdentifier/doi/10.2113/2020/8888588info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T12:59:50Zoai:ri.conicet.gov.ar:11336/143979instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 12:59:51.158CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)
title Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)
spellingShingle Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)
Arnous, Ahmad
Neotectonic
Santa Bárbara System
Seismic Refraction
title_short Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)
title_full Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)
title_fullStr Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)
title_full_unstemmed Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)
title_sort Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S)
dc.creator.none.fl_str_mv Arnous, Ahmad
Zeckra, Martin
Venerdini, Agostina Lia
Alvarado, Patricia Monica
Arrowsmith, Ramón
Guillemoteau, Julien
Landgraf, Angela
Gutiérrez, Antonio
Strecker, Manfred R.
author Arnous, Ahmad
author_facet Arnous, Ahmad
Zeckra, Martin
Venerdini, Agostina Lia
Alvarado, Patricia Monica
Arrowsmith, Ramón
Guillemoteau, Julien
Landgraf, Angela
Gutiérrez, Antonio
Strecker, Manfred R.
author_role author
author2 Zeckra, Martin
Venerdini, Agostina Lia
Alvarado, Patricia Monica
Arrowsmith, Ramón
Guillemoteau, Julien
Landgraf, Angela
Gutiérrez, Antonio
Strecker, Manfred R.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Neotectonic
Santa Bárbara System
Seismic Refraction
topic Neotectonic
Santa Bárbara System
Seismic Refraction
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Uplift in the broken Andean foreland of the Argentine Santa Bárbara System (SBS) is associated with the contractional reactivationof basement anisotropies, similar to those reported from the thick-skinned Cretaceous-Eocene Laramide province of NorthAmerica. Fault scarps, deformed Quaternary deposits and landforms, disrupted drainage patterns, and medium-sizedearthquakes within the SBS suggest that movement along these structures may be a recurring phenomenon, with yet to bedefined repeat intervals and rupture lengths. In contrast to the Subandes thrust belt farther north, where eastward-migratingdeformation has generated a well-defined thrust front, the SBS records spatiotemporally disparate deformation along structuresthat are only known to the first order. We present herein the results of geomorphic desktop analyses, structural fieldobservations, and 2D electrical resistivity tomography and seismic-refraction tomography surveys and an interpretation ofseismic reflection profiles across suspected fault scarps in the sedimentary basins adjacent to the Candelaria Range (CR)basement uplift, in the south-central part of the SBS. Our analysis in the CR piedmont areas reveals consistency between theresults of near-surface electrical resistivity and seismic-refraction tomography surveys, the locations of prominent fault scarps,and structural geometries at greater depth imaged by seismic reflection data. We suggest that this deformation is driven bydeep-seated blind thrusting beneath the CR and associated regional warping, while shortening involving Mesozoic and Cenozoicsedimentary strata in the adjacent basins was accommodated by layer-parallel folding and flexural-slip faults that cut throughQuaternary landforms and deposits at the surface.
Fil: Arnous, Ahmad. Instituto Miguel Lillo, Universidad Nacional de Tucumán; Argentina. University Of Postdam; Alemania
Fil: Zeckra, Martin. University Of Postdam; Alemania
Fil: Venerdini, Agostina Lia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Alvarado, Patricia Monica. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Geofísica y Astronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Arrowsmith, Ramón. School Of Earth And Space Exploration, Arizona State Un; Estados Unidos
Fil: Guillemoteau, Julien. University Of Postdam; Alemania
Fil: Landgraf, Angela. University Of Postdam; Alemania
Fil: Gutiérrez, Antonio. Instituto Miguel Lillo, Universidad Nacional de Tucumán; Argentina
Fil: Strecker, Manfred R.. University Of Postdam; Alemania
description Uplift in the broken Andean foreland of the Argentine Santa Bárbara System (SBS) is associated with the contractional reactivationof basement anisotropies, similar to those reported from the thick-skinned Cretaceous-Eocene Laramide province of NorthAmerica. Fault scarps, deformed Quaternary deposits and landforms, disrupted drainage patterns, and medium-sizedearthquakes within the SBS suggest that movement along these structures may be a recurring phenomenon, with yet to bedefined repeat intervals and rupture lengths. In contrast to the Subandes thrust belt farther north, where eastward-migratingdeformation has generated a well-defined thrust front, the SBS records spatiotemporally disparate deformation along structuresthat are only known to the first order. We present herein the results of geomorphic desktop analyses, structural fieldobservations, and 2D electrical resistivity tomography and seismic-refraction tomography surveys and an interpretation ofseismic reflection profiles across suspected fault scarps in the sedimentary basins adjacent to the Candelaria Range (CR)basement uplift, in the south-central part of the SBS. Our analysis in the CR piedmont areas reveals consistency between theresults of near-surface electrical resistivity and seismic-refraction tomography surveys, the locations of prominent fault scarps,and structural geometries at greater depth imaged by seismic reflection data. We suggest that this deformation is driven bydeep-seated blind thrusting beneath the CR and associated regional warping, while shortening involving Mesozoic and Cenozoicsedimentary strata in the adjacent basins was accommodated by layer-parallel folding and flexural-slip faults that cut throughQuaternary landforms and deposits at the surface.
publishDate 2020
dc.date.none.fl_str_mv 2020-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/143979
Arnous, Ahmad; Zeckra, Martin; Venerdini, Agostina Lia; Alvarado, Patricia Monica; Arrowsmith, Ramón; et al.; Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S); GeoScienceWorld; Lithosphere; 1; 9-2020; 8888588, 1-25
1941-8264
1947-4253
CONICET Digital
CONICET
url http://hdl.handle.net/11336/143979
identifier_str_mv Arnous, Ahmad; Zeckra, Martin; Venerdini, Agostina Lia; Alvarado, Patricia Monica; Arrowsmith, Ramón; et al.; Neotectonic Activity in the Low-Strain Broken Foreland (Santa Bárbara System) of the North-Western Argentinean Andes (26°S); GeoScienceWorld; Lithosphere; 1; 9-2020; 8888588, 1-25
1941-8264
1947-4253
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/gsa/lithosphere/article/2020/1/1/591022/Neotectonic-Activity-in-the-LowStrain-Broken
info:eu-repo/semantics/altIdentifier/doi/10.2113/2020/8888588
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv GeoScienceWorld
publisher.none.fl_str_mv GeoScienceWorld
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.48226

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