Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation

Autores
Ghiglione, Matias; Barberon, Vanesa; Ramos, Miguel Esteban; Tobal, Jonathan Elías; Garcia Morabito, Ezequiel; Suárez, Rodrigo Javier; Martinod, Joseph; Sue, Christian
Año de publicación
2018
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
We present an appraisal of structural domains in the SPA (Southern Patagonian Andes) between 46° and 52°S, recognizing a thickskinnedBD (Basement domain) and a hybrid thick- and thin-skinned systems in the FTB (fold and thrust belt).Two major structural segments can be clearly defined north and south of 48°30´: (1) Northern segment: With a steady orogenicwidth of around 340-360km, is characterized by a well-developed basement domain, and a narrow FTB. The inner domain of theFTB is very narrow.The comparison of our geometrical data with exhumation patterns from thermochronological studies evidences importantcorrelations: (1) The wide basement in the northern sector coincides with exhumation ages younger than 3 Ma throughout thisdomain. It has been proposed that this sector was dominated by highly efficient alpine glacial erosion, producing this characteristicyoung exhumation pattern (Thomson 2010). In terms of the critical wedge theory, enhanced erosive exhumation in the highlandof the retro wedge produces active tectonic uplift of the basement domain; while the basement is constantly subdued under thecritical angle, the thrust front does not advance, and the FTB is underdeveloped, in agreement with our empirical observations. (2)The abrupt and steady increase in width and shortening of the FTB towards the southern sector coincides with older basementcooling ages which indicate much reduced late Cenozoic erosion despite dominantly glacial conditions here since the latestMiocene (Thomson et al., 2010). Although orogen width does seem to be around 25% wider between 48°30´and 50°SL, it showsa gradual decline towards the south. Older exhumation ages in the Basement domain coincides with a thicker sedimentary coverand erosion focused in the retroarc, as expected by the critical wedge theory, predicting the development of a wider FTB.
Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Barberon, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Ramos, Miguel Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Tobal, Jonathan Elías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Garcia Morabito, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; Argentina
Fil: Suárez, Rodrigo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Martinod, Joseph. Université de Savoie Mont-blanc; Francia
Fil: Sue, Christian. Universite de Franche-Comte; Francia
XV Congreso Geológico Chileno
Concepción
Chile
Universidad de Concepción
Colegio de Geólogos de Chile
Sociedad Geológica de Chile
Materia
STRUCTURE
EXHUMATION
THERMOCHRONOLOGICAL
PATAGONIA
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:11336/268071
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/268071
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformationGhiglione, MatiasBarberon, VanesaRamos, Miguel EstebanTobal, Jonathan ElíasGarcia Morabito, EzequielSuárez, Rodrigo JavierMartinod, JosephSue, ChristianSTRUCTUREEXHUMATIONTHERMOCHRONOLOGICALPATAGONIAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1We present an appraisal of structural domains in the SPA (Southern Patagonian Andes) between 46° and 52°S, recognizing a thickskinnedBD (Basement domain) and a hybrid thick- and thin-skinned systems in the FTB (fold and thrust belt).Two major structural segments can be clearly defined north and south of 48°30´: (1) Northern segment: With a steady orogenicwidth of around 340-360km, is characterized by a well-developed basement domain, and a narrow FTB. The inner domain of theFTB is very narrow.The comparison of our geometrical data with exhumation patterns from thermochronological studies evidences importantcorrelations: (1) The wide basement in the northern sector coincides with exhumation ages younger than 3 Ma throughout thisdomain. It has been proposed that this sector was dominated by highly efficient alpine glacial erosion, producing this characteristicyoung exhumation pattern (Thomson 2010). In terms of the critical wedge theory, enhanced erosive exhumation in the highlandof the retro wedge produces active tectonic uplift of the basement domain; while the basement is constantly subdued under thecritical angle, the thrust front does not advance, and the FTB is underdeveloped, in agreement with our empirical observations. (2)The abrupt and steady increase in width and shortening of the FTB towards the southern sector coincides with older basementcooling ages which indicate much reduced late Cenozoic erosion despite dominantly glacial conditions here since the latestMiocene (Thomson et al., 2010). Although orogen width does seem to be around 25% wider between 48°30´and 50°SL, it showsa gradual decline towards the south. Older exhumation ages in the Basement domain coincides with a thicker sedimentary coverand erosion focused in the retroarc, as expected by the critical wedge theory, predicting the development of a wider FTB.Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Barberon, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Ramos, Miguel Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Tobal, Jonathan Elías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Garcia Morabito, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; ArgentinaFil: Suárez, Rodrigo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Martinod, Joseph. Université de Savoie Mont-blanc; FranciaFil: Sue, Christian. Universite de Franche-Comte; FranciaXV Congreso Geológico ChilenoConcepciónChileUniversidad de ConcepciónColegio de Geólogos de ChileSociedad Geológica de ChileUniversidad de Concepción2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/268071Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation; XV Congreso Geológico Chileno; Concepción; Chile; 2018; 1208-1208CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://congresogeologicochileno.cl/wp-content/uploads/2018/12/Libro-de-Actas-XVCongresoGeologicoChileno2018-2.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:57:47Zoai:ri.conicet.gov.ar:11336/268071instacron: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 09:57:47.288CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation
title Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation
spellingShingle Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation
Ghiglione, Matias
STRUCTURE
EXHUMATION
THERMOCHRONOLOGICAL
PATAGONIA
title_short Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation
title_full Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation
title_fullStr Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation
title_full_unstemmed Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation
title_sort Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation
dc.creator.none.fl_str_mv Ghiglione, Matias
Barberon, Vanesa
Ramos, Miguel Esteban
Tobal, Jonathan Elías
Garcia Morabito, Ezequiel
Suárez, Rodrigo Javier
Martinod, Joseph
Sue, Christian
author Ghiglione, Matias
author_facet Ghiglione, Matias
Barberon, Vanesa
Ramos, Miguel Esteban
Tobal, Jonathan Elías
Garcia Morabito, Ezequiel
Suárez, Rodrigo Javier
Martinod, Joseph
Sue, Christian
author_role author
author2 Barberon, Vanesa
Ramos, Miguel Esteban
Tobal, Jonathan Elías
Garcia Morabito, Ezequiel
Suárez, Rodrigo Javier
Martinod, Joseph
Sue, Christian
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv STRUCTURE
EXHUMATION
THERMOCHRONOLOGICAL
PATAGONIA
topic STRUCTURE
EXHUMATION
THERMOCHRONOLOGICAL
PATAGONIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present an appraisal of structural domains in the SPA (Southern Patagonian Andes) between 46° and 52°S, recognizing a thickskinnedBD (Basement domain) and a hybrid thick- and thin-skinned systems in the FTB (fold and thrust belt).Two major structural segments can be clearly defined north and south of 48°30´: (1) Northern segment: With a steady orogenicwidth of around 340-360km, is characterized by a well-developed basement domain, and a narrow FTB. The inner domain of theFTB is very narrow.The comparison of our geometrical data with exhumation patterns from thermochronological studies evidences importantcorrelations: (1) The wide basement in the northern sector coincides with exhumation ages younger than 3 Ma throughout thisdomain. It has been proposed that this sector was dominated by highly efficient alpine glacial erosion, producing this characteristicyoung exhumation pattern (Thomson 2010). In terms of the critical wedge theory, enhanced erosive exhumation in the highlandof the retro wedge produces active tectonic uplift of the basement domain; while the basement is constantly subdued under thecritical angle, the thrust front does not advance, and the FTB is underdeveloped, in agreement with our empirical observations. (2)The abrupt and steady increase in width and shortening of the FTB towards the southern sector coincides with older basementcooling ages which indicate much reduced late Cenozoic erosion despite dominantly glacial conditions here since the latestMiocene (Thomson et al., 2010). Although orogen width does seem to be around 25% wider between 48°30´and 50°SL, it showsa gradual decline towards the south. Older exhumation ages in the Basement domain coincides with a thicker sedimentary coverand erosion focused in the retroarc, as expected by the critical wedge theory, predicting the development of a wider FTB.
Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Barberon, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Ramos, Miguel Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Tobal, Jonathan Elías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Garcia Morabito, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; Argentina
Fil: Suárez, Rodrigo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Martinod, Joseph. Université de Savoie Mont-blanc; Francia
Fil: Sue, Christian. Universite de Franche-Comte; Francia
XV Congreso Geológico Chileno
Concepción
Chile
Universidad de Concepción
Colegio de Geólogos de Chile
Sociedad Geológica de Chile
description We present an appraisal of structural domains in the SPA (Southern Patagonian Andes) between 46° and 52°S, recognizing a thickskinnedBD (Basement domain) and a hybrid thick- and thin-skinned systems in the FTB (fold and thrust belt).Two major structural segments can be clearly defined north and south of 48°30´: (1) Northern segment: With a steady orogenicwidth of around 340-360km, is characterized by a well-developed basement domain, and a narrow FTB. The inner domain of theFTB is very narrow.The comparison of our geometrical data with exhumation patterns from thermochronological studies evidences importantcorrelations: (1) The wide basement in the northern sector coincides with exhumation ages younger than 3 Ma throughout thisdomain. It has been proposed that this sector was dominated by highly efficient alpine glacial erosion, producing this characteristicyoung exhumation pattern (Thomson 2010). In terms of the critical wedge theory, enhanced erosive exhumation in the highlandof the retro wedge produces active tectonic uplift of the basement domain; while the basement is constantly subdued under thecritical angle, the thrust front does not advance, and the FTB is underdeveloped, in agreement with our empirical observations. (2)The abrupt and steady increase in width and shortening of the FTB towards the southern sector coincides with older basementcooling ages which indicate much reduced late Cenozoic erosion despite dominantly glacial conditions here since the latestMiocene (Thomson et al., 2010). Although orogen width does seem to be around 25% wider between 48°30´and 50°SL, it showsa gradual decline towards the south. Older exhumation ages in the Basement domain coincides with a thicker sedimentary coverand erosion focused in the retroarc, as expected by the critical wedge theory, predicting the development of a wider FTB.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/268071
Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation; XV Congreso Geológico Chileno; Concepción; Chile; 2018; 1208-1208
CONICET Digital
CONICET
url http://hdl.handle.net/11336/268071
identifier_str_mv Structure and tectonic evolution of the South Patagonian fold and thrust belt: pairing between subduction dynamics, climate and tectonic deformation; XV Congreso Geológico Chileno; Concepción; Chile; 2018; 1208-1208
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://congresogeologicochileno.cl/wp-content/uploads/2018/12/Libro-de-Actas-XVCongresoGeologicoChileno2018-2.pdf
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.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Universidad de Concepción
publisher.none.fl_str_mv Universidad de Concepción
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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