Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin

Autores
Prezzi, Claudia Beatriz; Götze, Hans Jürgen; Schmidt, Sabine
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Chaco–Paraná Basin was initiated during the late Oligocene as a result of shortening in response to Nazca–South America plate convergence, which produced a fold and thrust belt in the backarc region of the Central Andes. Foreland basins are the result of the flexural isostatic response of an elastic plate to orogenic and/or thrust sheet loading. We carried out flexural modeling along a W–E profile (22.5°S) to determine flexural, crustal, and Chaco–Paraná foreland basin development using available information on ages, elastic and sedimentary thicknesses, topographic and structural histories. We also developed a 3D flexural model, considering present day topography and elastic thickness values, in order to assess the possible existence of major differences with 2D models. It is possible to reproduce present day elevation, gravity anomaly, Moho depth, elastic thicknesses, foreland sedimentary thicknesses and the basin geometry. The 2D modeling also permits to reproduce foreland sedimentary thicknesses documented at 10 Ma and 12 Ma. The new results indicate that any decrease of the elastic thickness beneath the Eastern Puna–Eastern Cordillera would have occurred during the 14–12/10 Ma interval, suggesting a major change in the thermal state of the lithosphere during such time span. Coincidently, other authors determined the occurrence of a rapid elevation increase of the Southern Altiplano/Eastern Cordillera at 13–9 Ma, possibly related to piecemeal removal of lower lithosphere. In spite of the numerous limitations and simplifications mentioned above, our flexural model has shown to be a useful tool for the better understanding of the relationships between the development of the Chaco–Paraná foreland basin and the spatiotemporal evolution of the Andean orogen.
Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Götze, Hans Jürgen. Christian Albrechts Universität; Alemania
Fil: Schmidt, Sabine. Christian Albrechts Universität; Alemania
Materia
Chaco-Paraná Basin
Flexural Modelling
Basin Development
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:11336/18542
Acceder
id CONICETDig_f40d9cac1684ecaf0778274b8c2b741b
oai_identifier_str oai:ri.conicet.gov.ar:11336/18542
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná BasinPrezzi, Claudia BeatrizGötze, Hans JürgenSchmidt, SabineChaco-Paraná BasinFlexural ModellingBasin Developmenthttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Chaco–Paraná Basin was initiated during the late Oligocene as a result of shortening in response to Nazca–South America plate convergence, which produced a fold and thrust belt in the backarc region of the Central Andes. Foreland basins are the result of the flexural isostatic response of an elastic plate to orogenic and/or thrust sheet loading. We carried out flexural modeling along a W–E profile (22.5°S) to determine flexural, crustal, and Chaco–Paraná foreland basin development using available information on ages, elastic and sedimentary thicknesses, topographic and structural histories. We also developed a 3D flexural model, considering present day topography and elastic thickness values, in order to assess the possible existence of major differences with 2D models. It is possible to reproduce present day elevation, gravity anomaly, Moho depth, elastic thicknesses, foreland sedimentary thicknesses and the basin geometry. The 2D modeling also permits to reproduce foreland sedimentary thicknesses documented at 10 Ma and 12 Ma. The new results indicate that any decrease of the elastic thickness beneath the Eastern Puna–Eastern Cordillera would have occurred during the 14–12/10 Ma interval, suggesting a major change in the thermal state of the lithosphere during such time span. Coincidently, other authors determined the occurrence of a rapid elevation increase of the Southern Altiplano/Eastern Cordillera at 13–9 Ma, possibly related to piecemeal removal of lower lithosphere. In spite of the numerous limitations and simplifications mentioned above, our flexural model has shown to be a useful tool for the better understanding of the relationships between the development of the Chaco–Paraná foreland basin and the spatiotemporal evolution of the Andean orogen.Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Götze, Hans Jürgen. Christian Albrechts Universität; AlemaniaFil: Schmidt, Sabine. Christian Albrechts Universität; AlemaniaElsevier Science2014-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/18542Prezzi, Claudia Beatriz; Götze, Hans Jürgen; Schmidt, Sabine; Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin; Elsevier Science; Tectonophysics; 628; 7-2014; 228-2430040-1951CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2014.04.041info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040195114002315info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:08:58Zoai:ri.conicet.gov.ar:11336/18542instacron: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 13:08:58.914CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin
title Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin
spellingShingle Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin
Prezzi, Claudia Beatriz
Chaco-Paraná Basin
Flexural Modelling
Basin Development
title_short Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin
title_full Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin
title_fullStr Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin
title_full_unstemmed Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin
title_sort Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin
dc.creator.none.fl_str_mv Prezzi, Claudia Beatriz
Götze, Hans Jürgen
Schmidt, Sabine
author Prezzi, Claudia Beatriz
author_facet Prezzi, Claudia Beatriz
Götze, Hans Jürgen
Schmidt, Sabine
author_role author
author2 Götze, Hans Jürgen
Schmidt, Sabine
author2_role author
author
dc.subject.none.fl_str_mv Chaco-Paraná Basin
Flexural Modelling
Basin Development
topic Chaco-Paraná Basin
Flexural Modelling
Basin Development
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Chaco–Paraná Basin was initiated during the late Oligocene as a result of shortening in response to Nazca–South America plate convergence, which produced a fold and thrust belt in the backarc region of the Central Andes. Foreland basins are the result of the flexural isostatic response of an elastic plate to orogenic and/or thrust sheet loading. We carried out flexural modeling along a W–E profile (22.5°S) to determine flexural, crustal, and Chaco–Paraná foreland basin development using available information on ages, elastic and sedimentary thicknesses, topographic and structural histories. We also developed a 3D flexural model, considering present day topography and elastic thickness values, in order to assess the possible existence of major differences with 2D models. It is possible to reproduce present day elevation, gravity anomaly, Moho depth, elastic thicknesses, foreland sedimentary thicknesses and the basin geometry. The 2D modeling also permits to reproduce foreland sedimentary thicknesses documented at 10 Ma and 12 Ma. The new results indicate that any decrease of the elastic thickness beneath the Eastern Puna–Eastern Cordillera would have occurred during the 14–12/10 Ma interval, suggesting a major change in the thermal state of the lithosphere during such time span. Coincidently, other authors determined the occurrence of a rapid elevation increase of the Southern Altiplano/Eastern Cordillera at 13–9 Ma, possibly related to piecemeal removal of lower lithosphere. In spite of the numerous limitations and simplifications mentioned above, our flexural model has shown to be a useful tool for the better understanding of the relationships between the development of the Chaco–Paraná foreland basin and the spatiotemporal evolution of the Andean orogen.
Fil: Prezzi, Claudia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Götze, Hans Jürgen. Christian Albrechts Universität; Alemania
Fil: Schmidt, Sabine. Christian Albrechts Universität; Alemania
description The Chaco–Paraná Basin was initiated during the late Oligocene as a result of shortening in response to Nazca–South America plate convergence, which produced a fold and thrust belt in the backarc region of the Central Andes. Foreland basins are the result of the flexural isostatic response of an elastic plate to orogenic and/or thrust sheet loading. We carried out flexural modeling along a W–E profile (22.5°S) to determine flexural, crustal, and Chaco–Paraná foreland basin development using available information on ages, elastic and sedimentary thicknesses, topographic and structural histories. We also developed a 3D flexural model, considering present day topography and elastic thickness values, in order to assess the possible existence of major differences with 2D models. It is possible to reproduce present day elevation, gravity anomaly, Moho depth, elastic thicknesses, foreland sedimentary thicknesses and the basin geometry. The 2D modeling also permits to reproduce foreland sedimentary thicknesses documented at 10 Ma and 12 Ma. The new results indicate that any decrease of the elastic thickness beneath the Eastern Puna–Eastern Cordillera would have occurred during the 14–12/10 Ma interval, suggesting a major change in the thermal state of the lithosphere during such time span. Coincidently, other authors determined the occurrence of a rapid elevation increase of the Southern Altiplano/Eastern Cordillera at 13–9 Ma, possibly related to piecemeal removal of lower lithosphere. In spite of the numerous limitations and simplifications mentioned above, our flexural model has shown to be a useful tool for the better understanding of the relationships between the development of the Chaco–Paraná foreland basin and the spatiotemporal evolution of the Andean orogen.
publishDate 2014
dc.date.none.fl_str_mv 2014-07
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/11336/18542
Prezzi, Claudia Beatriz; Götze, Hans Jürgen; Schmidt, Sabine; Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin; Elsevier Science; Tectonophysics; 628; 7-2014; 228-243
0040-1951
CONICET Digital
CONICET
url http://hdl.handle.net/11336/18542
identifier_str_mv Prezzi, Claudia Beatriz; Götze, Hans Jürgen; Schmidt, Sabine; Andean Foreland Evolution and Flexure in NW Argentina: Chaco-Paraná Basin; Elsevier Science; Tectonophysics; 628; 7-2014; 228-243
0040-1951
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2014.04.041
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0040195114002315
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 Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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
_version_ 1842980434358566912
score 12.993085

Publicaciones similares