Flexural isostasy in the Bolivian Andes: Chaco foreland basin development

Autores
Prezzi, Claudia Beatriz; Uba, Cornelius E.; Götze, Hans Jürgen
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Chaco foreland basin was initiated during the late Oligocene as a result of thrusting in the Eastern Cordillera in response to Nazca-South America plate convergence. 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 modelling along a W-E profile (21.4°S) to investigate Chaco foreland basin development using new information on ages of foreland basin strata, elastic and sedimentary thicknesses and structural histories. It was possible to reproduce present-day elevation, gravity anomaly, Moho depth, elastic thicknesses, foreland sedimentary thicknesses and the basin geometry. Our model predicted the basin geometry and sedimentary thicknesses for different evolutionary stages. Measured thicknesses and previously proposed depozones were compared with our predictions. Our results shed more light on the Chaco foreland basin evolution and suggest that an apparent decrease in elastic thickness beneath the Eastern Cordillera and the Interandean Zone could have occurred between 14 and 6 Ma.
Fil: Prezzi, Claudia Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Uba, Cornelius E.. Universitat Potsdam; Alemania
Fil: Götze, Hans Jürgen. Christian Albrechts Universität; Alemania
Materia
Basin Development
Central Andes
Chaco Foreland
Flexural Isostasy
Flexural Modelling
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:11336/73446
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Flexural isostasy in the Bolivian Andes: Chaco foreland basin developmentPrezzi, Claudia BeatrizUba, Cornelius E.Götze, Hans JürgenBasin DevelopmentCentral AndesChaco ForelandFlexural IsostasyFlexural Modellinghttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Chaco foreland basin was initiated during the late Oligocene as a result of thrusting in the Eastern Cordillera in response to Nazca-South America plate convergence. 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 modelling along a W-E profile (21.4°S) to investigate Chaco foreland basin development using new information on ages of foreland basin strata, elastic and sedimentary thicknesses and structural histories. It was possible to reproduce present-day elevation, gravity anomaly, Moho depth, elastic thicknesses, foreland sedimentary thicknesses and the basin geometry. Our model predicted the basin geometry and sedimentary thicknesses for different evolutionary stages. Measured thicknesses and previously proposed depozones were compared with our predictions. Our results shed more light on the Chaco foreland basin evolution and suggest that an apparent decrease in elastic thickness beneath the Eastern Cordillera and the Interandean Zone could have occurred between 14 and 6 Ma.Fil: Prezzi, Claudia Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Uba, Cornelius E.. Universitat Potsdam; AlemaniaFil: Götze, Hans Jürgen. Christian Albrechts Universität; AlemaniaElsevier Science2009-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/73446Prezzi, Claudia Beatriz; Uba, Cornelius E.; Götze, Hans Jürgen; Flexural isostasy in the Bolivian Andes: Chaco foreland basin development; Elsevier Science; Tectonophysics; 474; 3-4; 9-2009; 526-5430040-1951CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.tecto.2009.04.037info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0040195109002480info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:54Zoai:ri.conicet.gov.ar:11336/73446instacron: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:34982025-09-03 10:03:54.728CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Flexural isostasy in the Bolivian Andes: Chaco foreland basin development
title Flexural isostasy in the Bolivian Andes: Chaco foreland basin development
spellingShingle Flexural isostasy in the Bolivian Andes: Chaco foreland basin development
Prezzi, Claudia Beatriz
Basin Development
Central Andes
Chaco Foreland
Flexural Isostasy
Flexural Modelling
title_short Flexural isostasy in the Bolivian Andes: Chaco foreland basin development
title_full Flexural isostasy in the Bolivian Andes: Chaco foreland basin development
title_fullStr Flexural isostasy in the Bolivian Andes: Chaco foreland basin development
title_full_unstemmed Flexural isostasy in the Bolivian Andes: Chaco foreland basin development
title_sort Flexural isostasy in the Bolivian Andes: Chaco foreland basin development
dc.creator.none.fl_str_mv Prezzi, Claudia Beatriz
Uba, Cornelius E.
Götze, Hans Jürgen
author Prezzi, Claudia Beatriz
author_facet Prezzi, Claudia Beatriz
Uba, Cornelius E.
Götze, Hans Jürgen
author_role author
author2 Uba, Cornelius E.
Götze, Hans Jürgen
author2_role author
author
dc.subject.none.fl_str_mv Basin Development
Central Andes
Chaco Foreland
Flexural Isostasy
Flexural Modelling
topic Basin Development
Central Andes
Chaco Foreland
Flexural Isostasy
Flexural Modelling
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 foreland basin was initiated during the late Oligocene as a result of thrusting in the Eastern Cordillera in response to Nazca-South America plate convergence. 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 modelling along a W-E profile (21.4°S) to investigate Chaco foreland basin development using new information on ages of foreland basin strata, elastic and sedimentary thicknesses and structural histories. It was possible to reproduce present-day elevation, gravity anomaly, Moho depth, elastic thicknesses, foreland sedimentary thicknesses and the basin geometry. Our model predicted the basin geometry and sedimentary thicknesses for different evolutionary stages. Measured thicknesses and previously proposed depozones were compared with our predictions. Our results shed more light on the Chaco foreland basin evolution and suggest that an apparent decrease in elastic thickness beneath the Eastern Cordillera and the Interandean Zone could have occurred between 14 and 6 Ma.
Fil: Prezzi, Claudia Beatriz. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Uba, Cornelius E.. Universitat Potsdam; Alemania
Fil: Götze, Hans Jürgen. Christian Albrechts Universität; Alemania
description The Chaco foreland basin was initiated during the late Oligocene as a result of thrusting in the Eastern Cordillera in response to Nazca-South America plate convergence. 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 modelling along a W-E profile (21.4°S) to investigate Chaco foreland basin development using new information on ages of foreland basin strata, elastic and sedimentary thicknesses and structural histories. It was possible to reproduce present-day elevation, gravity anomaly, Moho depth, elastic thicknesses, foreland sedimentary thicknesses and the basin geometry. Our model predicted the basin geometry and sedimentary thicknesses for different evolutionary stages. Measured thicknesses and previously proposed depozones were compared with our predictions. Our results shed more light on the Chaco foreland basin evolution and suggest that an apparent decrease in elastic thickness beneath the Eastern Cordillera and the Interandean Zone could have occurred between 14 and 6 Ma.
publishDate 2009
dc.date.none.fl_str_mv 2009-09
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/11336/73446
Prezzi, Claudia Beatriz; Uba, Cornelius E.; Götze, Hans Jürgen; Flexural isostasy in the Bolivian Andes: Chaco foreland basin development; Elsevier Science; Tectonophysics; 474; 3-4; 9-2009; 526-543
0040-1951
CONICET Digital
CONICET
url http://hdl.handle.net/11336/73446
identifier_str_mv Prezzi, Claudia Beatriz; Uba, Cornelius E.; Götze, Hans Jürgen; Flexural isostasy in the Bolivian Andes: Chaco foreland basin development; Elsevier Science; Tectonophysics; 474; 3-4; 9-2009; 526-543
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.2009.04.037
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0040195109002480
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 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_ 1842269826614034432
score 13.13397

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