Exhumation history of the Andean broken foreland revisited

Autores
Davila, Federico Miguel; Carter, Andrew
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Andean broken foreland in west-central Argentina, located 400–800 km from the Peru-Chile Trench is associated with fl at subduction linked to collision of the oceanic Juan Fernandez Ridge. While the conditions associated with fl at subduction would be expected to produce increases in rock uplift and exhumation, where thrusting and dynamic forces work together, a prevalence of pre-Cenozoic apatite fi ssion track (AFT) cooling ages suggests that there is no such link. The lack of Cenozoic cooling ages is at odds with structural reconstructions and basin studies along the foreland that show several kilometers of exhumation. This paradox can be reconciled by taking into account the thermal effects of fl at subduction that removed the mantle wedge, and a signifi cant source of heat fl ow into the crust. Reinterpretation of published AFT exhumation data (>320 ages) using more realistic lower geothermal gradient values allows for substantial exhumation and explains the lack of Cenozoic exhumation ages across the foreland region.
Fil: Davila, Federico Miguel. University College London; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Carter, Andrew. University Of London; Reino Unido
Materia
Andes
Cenozoico
Termocronologia
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:11336/25704
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Exhumation history of the Andean broken foreland revisitedDavila, Federico MiguelCarter, AndrewAndesCenozoicoTermocronologiahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Andean broken foreland in west-central Argentina, located 400–800 km from the Peru-Chile Trench is associated with fl at subduction linked to collision of the oceanic Juan Fernandez Ridge. While the conditions associated with fl at subduction would be expected to produce increases in rock uplift and exhumation, where thrusting and dynamic forces work together, a prevalence of pre-Cenozoic apatite fi ssion track (AFT) cooling ages suggests that there is no such link. The lack of Cenozoic cooling ages is at odds with structural reconstructions and basin studies along the foreland that show several kilometers of exhumation. This paradox can be reconciled by taking into account the thermal effects of fl at subduction that removed the mantle wedge, and a signifi cant source of heat fl ow into the crust. Reinterpretation of published AFT exhumation data (>320 ages) using more realistic lower geothermal gradient values allows for substantial exhumation and explains the lack of Cenozoic exhumation ages across the foreland region.Fil: Davila, Federico Miguel. University College London; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Carter, Andrew. University Of London; Reino UnidoGeological Society of America2013-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25704Davila, Federico Miguel; Carter, Andrew; Exhumation history of the Andean broken foreland revisited; Geological Society of America; Geology; 41; 4; 4-2013; 443-4460091-7613CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1130/G33960.1info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/geology/article-abstract/41/4/443/131153/exhumation-history-of-the-andean-broken-forelandinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:08:21Zoai:ri.conicet.gov.ar:11336/25704instacron: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:34982025-10-22 11:08:21.841CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Exhumation history of the Andean broken foreland revisited
title Exhumation history of the Andean broken foreland revisited
spellingShingle Exhumation history of the Andean broken foreland revisited
Davila, Federico Miguel
Andes
Cenozoico
Termocronologia
title_short Exhumation history of the Andean broken foreland revisited
title_full Exhumation history of the Andean broken foreland revisited
title_fullStr Exhumation history of the Andean broken foreland revisited
title_full_unstemmed Exhumation history of the Andean broken foreland revisited
title_sort Exhumation history of the Andean broken foreland revisited
dc.creator.none.fl_str_mv Davila, Federico Miguel
Carter, Andrew
author Davila, Federico Miguel
author_facet Davila, Federico Miguel
Carter, Andrew
author_role author
author2 Carter, Andrew
author2_role author
dc.subject.none.fl_str_mv Andes
Cenozoico
Termocronologia
topic Andes
Cenozoico
Termocronologia
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 Andean broken foreland in west-central Argentina, located 400–800 km from the Peru-Chile Trench is associated with fl at subduction linked to collision of the oceanic Juan Fernandez Ridge. While the conditions associated with fl at subduction would be expected to produce increases in rock uplift and exhumation, where thrusting and dynamic forces work together, a prevalence of pre-Cenozoic apatite fi ssion track (AFT) cooling ages suggests that there is no such link. The lack of Cenozoic cooling ages is at odds with structural reconstructions and basin studies along the foreland that show several kilometers of exhumation. This paradox can be reconciled by taking into account the thermal effects of fl at subduction that removed the mantle wedge, and a signifi cant source of heat fl ow into the crust. Reinterpretation of published AFT exhumation data (>320 ages) using more realistic lower geothermal gradient values allows for substantial exhumation and explains the lack of Cenozoic exhumation ages across the foreland region.
Fil: Davila, Federico Miguel. University College London; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Carter, Andrew. University Of London; Reino Unido
description The Andean broken foreland in west-central Argentina, located 400–800 km from the Peru-Chile Trench is associated with fl at subduction linked to collision of the oceanic Juan Fernandez Ridge. While the conditions associated with fl at subduction would be expected to produce increases in rock uplift and exhumation, where thrusting and dynamic forces work together, a prevalence of pre-Cenozoic apatite fi ssion track (AFT) cooling ages suggests that there is no such link. The lack of Cenozoic cooling ages is at odds with structural reconstructions and basin studies along the foreland that show several kilometers of exhumation. This paradox can be reconciled by taking into account the thermal effects of fl at subduction that removed the mantle wedge, and a signifi cant source of heat fl ow into the crust. Reinterpretation of published AFT exhumation data (>320 ages) using more realistic lower geothermal gradient values allows for substantial exhumation and explains the lack of Cenozoic exhumation ages across the foreland region.
publishDate 2013
dc.date.none.fl_str_mv 2013-04
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/11336/25704
Davila, Federico Miguel; Carter, Andrew; Exhumation history of the Andean broken foreland revisited; Geological Society of America; Geology; 41; 4; 4-2013; 443-446
0091-7613
CONICET Digital
CONICET
url http://hdl.handle.net/11336/25704
identifier_str_mv Davila, Federico Miguel; Carter, Andrew; Exhumation history of the Andean broken foreland revisited; Geological Society of America; Geology; 41; 4; 4-2013; 443-446
0091-7613
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1130/G33960.1
info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/geology/article-abstract/41/4/443/131153/exhumation-history-of-the-andean-broken-foreland
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 Geological Society of America
publisher.none.fl_str_mv Geological Society of America
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 12.982451

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