Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)

Autores
Arnous, Ahmad; García, Victor H.; Pingel, Heiko; Giambiagi, Laura Beatriz; Strecker, Manfred R.
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Compared to the thin‐skinned Subandean foreland fold‐and‐thrust belt of northern Argentina andBolivia, the tectonically active morphotectonic province of the Santa Bárbara System in the Andean brokenforeland of northwestern Argentina is characterized by a temporally and spatially disparate deformation style.Although there is no well‐defined orogenic deformation front associated with the uplift of these basementcored,reverse‐fault bounded mountain ranges, there has been an overall eastward trend in Andeancompressional deformation since the Miocene. While reactivation of basement anisotropies, such as earlyPaleozoic metamorphic fabrics and Cretaceous normal faults, has been proposed to have profoundly affecteddeformation processes in the Santa Bárbara System, other mechanisms involving Mesozoic and Cenozoic coverrocks may also have played an important role in orogenic deformation in this sector of the Andean foreland. Wepresent structural field observations, interpretations of seismic reflection profiles, and kinematic modeling fromthe basins bordering the Candelaria Range in the southern sector of the Santa Bárbara System at 26°S. Ouranalysis features a 110‐km‐long structural cross section that images and links deep‐seated structures withshallow neotectonic faults. We find that regional shortening has been facilitated by several faults associated witha regional detachment at a depth of 23 km, resulting in total horizontal shortening of about 17% (18.4 km). Whilethe deep‐seated first‐order structures seem closely linked to seismogenic processes in the Andean foreland,shallow second‐order structures within the sedimentary cover modify the intermontane landscapes and appear tobe associated with aseismic creep.
Fil: Arnous, Ahmad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: García, Victor H.. Universitat Potsdam; Alemania
Fil: Pingel, Heiko. Universitat Potsdam; Alemania
Fil: Giambiagi, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Strecker, Manfred R.. Universitat Potsdam; Alemania
Materia
Andean Cordillera
Broken foreland
seismicity
Salta
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/265746
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)Arnous, AhmadGarcía, Victor H.Pingel, HeikoGiambiagi, Laura BeatrizStrecker, Manfred R.Andean CordilleraBroken forelandseismicitySaltahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Compared to the thin‐skinned Subandean foreland fold‐and‐thrust belt of northern Argentina andBolivia, the tectonically active morphotectonic province of the Santa Bárbara System in the Andean brokenforeland of northwestern Argentina is characterized by a temporally and spatially disparate deformation style.Although there is no well‐defined orogenic deformation front associated with the uplift of these basementcored,reverse‐fault bounded mountain ranges, there has been an overall eastward trend in Andeancompressional deformation since the Miocene. While reactivation of basement anisotropies, such as earlyPaleozoic metamorphic fabrics and Cretaceous normal faults, has been proposed to have profoundly affecteddeformation processes in the Santa Bárbara System, other mechanisms involving Mesozoic and Cenozoic coverrocks may also have played an important role in orogenic deformation in this sector of the Andean foreland. Wepresent structural field observations, interpretations of seismic reflection profiles, and kinematic modeling fromthe basins bordering the Candelaria Range in the southern sector of the Santa Bárbara System at 26°S. Ouranalysis features a 110‐km‐long structural cross section that images and links deep‐seated structures withshallow neotectonic faults. We find that regional shortening has been facilitated by several faults associated witha regional detachment at a depth of 23 km, resulting in total horizontal shortening of about 17% (18.4 km). Whilethe deep‐seated first‐order structures seem closely linked to seismogenic processes in the Andean foreland,shallow second‐order structures within the sedimentary cover modify the intermontane landscapes and appear tobe associated with aseismic creep.Fil: Arnous, Ahmad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: García, Victor H.. Universitat Potsdam; AlemaniaFil: Pingel, Heiko. Universitat Potsdam; AlemaniaFil: Giambiagi, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; ArgentinaFil: Strecker, Manfred R.. Universitat Potsdam; AlemaniaAmerican Geophysical Union2024-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/265746Arnous, Ahmad; García, Victor H.; Pingel, Heiko; Giambiagi, Laura Beatriz; Strecker, Manfred R.; Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S); American Geophysical Union; Tectonics; 43; 6; 6-2024; 1-190278-7407CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023TC008195info:eu-repo/semantics/altIdentifier/doi/10.1029/2023TC008195info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:17Zoai:ri.conicet.gov.ar:11336/265746instacron: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:34982025-09-29 09:40:17.296CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)
title Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)
spellingShingle Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)
Arnous, Ahmad
Andean Cordillera
Broken foreland
seismicity
Salta
title_short Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)
title_full Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)
title_fullStr Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)
title_full_unstemmed Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)
title_sort Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S)
dc.creator.none.fl_str_mv Arnous, Ahmad
García, Victor H.
Pingel, Heiko
Giambiagi, Laura Beatriz
Strecker, Manfred R.
author Arnous, Ahmad
author_facet Arnous, Ahmad
García, Victor H.
Pingel, Heiko
Giambiagi, Laura Beatriz
Strecker, Manfred R.
author_role author
author2 García, Victor H.
Pingel, Heiko
Giambiagi, Laura Beatriz
Strecker, Manfred R.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Andean Cordillera
Broken foreland
seismicity
Salta
topic Andean Cordillera
Broken foreland
seismicity
Salta
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Compared to the thin‐skinned Subandean foreland fold‐and‐thrust belt of northern Argentina andBolivia, the tectonically active morphotectonic province of the Santa Bárbara System in the Andean brokenforeland of northwestern Argentina is characterized by a temporally and spatially disparate deformation style.Although there is no well‐defined orogenic deformation front associated with the uplift of these basementcored,reverse‐fault bounded mountain ranges, there has been an overall eastward trend in Andeancompressional deformation since the Miocene. While reactivation of basement anisotropies, such as earlyPaleozoic metamorphic fabrics and Cretaceous normal faults, has been proposed to have profoundly affecteddeformation processes in the Santa Bárbara System, other mechanisms involving Mesozoic and Cenozoic coverrocks may also have played an important role in orogenic deformation in this sector of the Andean foreland. Wepresent structural field observations, interpretations of seismic reflection profiles, and kinematic modeling fromthe basins bordering the Candelaria Range in the southern sector of the Santa Bárbara System at 26°S. Ouranalysis features a 110‐km‐long structural cross section that images and links deep‐seated structures withshallow neotectonic faults. We find that regional shortening has been facilitated by several faults associated witha regional detachment at a depth of 23 km, resulting in total horizontal shortening of about 17% (18.4 km). Whilethe deep‐seated first‐order structures seem closely linked to seismogenic processes in the Andean foreland,shallow second‐order structures within the sedimentary cover modify the intermontane landscapes and appear tobe associated with aseismic creep.
Fil: Arnous, Ahmad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: García, Victor H.. Universitat Potsdam; Alemania
Fil: Pingel, Heiko. Universitat Potsdam; Alemania
Fil: Giambiagi, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina
Fil: Strecker, Manfred R.. Universitat Potsdam; Alemania
description Compared to the thin‐skinned Subandean foreland fold‐and‐thrust belt of northern Argentina andBolivia, the tectonically active morphotectonic province of the Santa Bárbara System in the Andean brokenforeland of northwestern Argentina is characterized by a temporally and spatially disparate deformation style.Although there is no well‐defined orogenic deformation front associated with the uplift of these basementcored,reverse‐fault bounded mountain ranges, there has been an overall eastward trend in Andeancompressional deformation since the Miocene. While reactivation of basement anisotropies, such as earlyPaleozoic metamorphic fabrics and Cretaceous normal faults, has been proposed to have profoundly affecteddeformation processes in the Santa Bárbara System, other mechanisms involving Mesozoic and Cenozoic coverrocks may also have played an important role in orogenic deformation in this sector of the Andean foreland. Wepresent structural field observations, interpretations of seismic reflection profiles, and kinematic modeling fromthe basins bordering the Candelaria Range in the southern sector of the Santa Bárbara System at 26°S. Ouranalysis features a 110‐km‐long structural cross section that images and links deep‐seated structures withshallow neotectonic faults. We find that regional shortening has been facilitated by several faults associated witha regional detachment at a depth of 23 km, resulting in total horizontal shortening of about 17% (18.4 km). Whilethe deep‐seated first‐order structures seem closely linked to seismogenic processes in the Andean foreland,shallow second‐order structures within the sedimentary cover modify the intermontane landscapes and appear tobe associated with aseismic creep.
publishDate 2024
dc.date.none.fl_str_mv 2024-06
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/11336/265746
Arnous, Ahmad; García, Victor H.; Pingel, Heiko; Giambiagi, Laura Beatriz; Strecker, Manfred R.; Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S); American Geophysical Union; Tectonics; 43; 6; 6-2024; 1-19
0278-7407
CONICET Digital
CONICET
url http://hdl.handle.net/11336/265746
identifier_str_mv Arnous, Ahmad; García, Victor H.; Pingel, Heiko; Giambiagi, Laura Beatriz; Strecker, Manfred R.; Kinematic Evolution of the Santa Bárbara System in the Foreland of the Central Andes of Northwestern Argentina (26°S); American Geophysical Union; Tectonics; 43; 6; 6-2024; 1-19
0278-7407
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://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023TC008195
info:eu-repo/semantics/altIdentifier/doi/10.1029/2023TC008195
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
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 13.070432

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