Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis

Autores
Hoke, Gregory D.; Graber, Nathan R.; Mescua, Jose Francisco; Giambiagi, Laura Beatriz; Fitzgerald, Paul G.; Metcalf, James R.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Apatite (U-Th)/He thermochronology from palaeosurface-bounded vertical transects collected in deeply incised river valleys with >2 km of relief, as well as geomorphic analysis, are used to examine the timing of uplift of the Frontal Cordillera and its relation to the evolution of the proximal portions of the Andean foreland between 32° and 34°S latitude. The results of apatite (U- Th)/He (AHe) analyses are complex. However, the data show positive age-elevation trends, with higher elevation samples yielding older AHe ages than samples at lower elevation. Slope breaks occur at c. 25 Ma in both profiles, separating very slow cooling and or residence within a partial retention zone (slope of c. 10 m/Myr) at the highest elevations from a slope of c. 60-100 m/ Myr cooling rate at lower elevations. The older AHe ages suggest either (1) minimal burial of the Frontal Cordillera and/or (2) significant pre-middle Miocene local relief. Geomorphic analysis of the adjacent, east-draining Río Mendoza and Río Tunuyán catchments reveals a glacial imprint to the landscape at elevations above 3000 m, including greater channel steepness and lower profile concavities developed during glacial erosion. Detailed analysis of headwall heights provides evidence of ongoing rock uplift along the entire eastern flank of the Frontal Cordillera and in the eastern flank of the Principal Cordillera south of the slab dip transition.
Fil: Hoke, Gregory D.. Syracuse University; Estados Unidos
Fil: Graber, Nathan R.. Syracuse University; Estados Unidos
Fil: Mescua, Jose Francisco. 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: 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: Fitzgerald, Paul G.. Syracuse University; Estados Unidos
Fil: Metcalf, James R.. Syracuse University; Estados Unidos. State University of Colorado at Boulder; Estados Unidos
Materia
LOW TEMPERATURE GEOCHRNOLOGY
TOPOGRAPHIC UPLIFT
FRONTAL CORDILLERA
PALEOSURFACES
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:11336/183212
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysisHoke, Gregory D.Graber, Nathan R.Mescua, Jose FranciscoGiambiagi, Laura BeatrizFitzgerald, Paul G.Metcalf, James R.LOW TEMPERATURE GEOCHRNOLOGYTOPOGRAPHIC UPLIFTFRONTAL CORDILLERAPALEOSURFACEShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Apatite (U-Th)/He thermochronology from palaeosurface-bounded vertical transects collected in deeply incised river valleys with >2 km of relief, as well as geomorphic analysis, are used to examine the timing of uplift of the Frontal Cordillera and its relation to the evolution of the proximal portions of the Andean foreland between 32° and 34°S latitude. The results of apatite (U- Th)/He (AHe) analyses are complex. However, the data show positive age-elevation trends, with higher elevation samples yielding older AHe ages than samples at lower elevation. Slope breaks occur at c. 25 Ma in both profiles, separating very slow cooling and or residence within a partial retention zone (slope of c. 10 m/Myr) at the highest elevations from a slope of c. 60-100 m/ Myr cooling rate at lower elevations. The older AHe ages suggest either (1) minimal burial of the Frontal Cordillera and/or (2) significant pre-middle Miocene local relief. Geomorphic analysis of the adjacent, east-draining Río Mendoza and Río Tunuyán catchments reveals a glacial imprint to the landscape at elevations above 3000 m, including greater channel steepness and lower profile concavities developed during glacial erosion. Detailed analysis of headwall heights provides evidence of ongoing rock uplift along the entire eastern flank of the Frontal Cordillera and in the eastern flank of the Principal Cordillera south of the slab dip transition.Fil: Hoke, Gregory D.. Syracuse University; Estados UnidosFil: Graber, Nathan R.. Syracuse University; Estados UnidosFil: Mescua, Jose Francisco. 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: 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: Fitzgerald, Paul G.. Syracuse University; Estados UnidosFil: Metcalf, James R.. Syracuse University; Estados Unidos. State University of Colorado at Boulder; Estados UnidosGeological Society Publications House2015-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/183212Hoke, Gregory D.; Graber, Nathan R.; Mescua, Jose Francisco; Giambiagi, Laura Beatriz; Fitzgerald, Paul G.; et al.; Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis; Geological Society Publications House; Geological Society of London Special Publication; 399; 2-2015; 383-3990305-8719CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.lyellcollection.org/doi/10.1144/SP399.4info:eu-repo/semantics/altIdentifier/doi/10.1144/SP399.4info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:17:59Zoai:ri.conicet.gov.ar:11336/183212instacron: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 10:17:59.363CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis
title Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis
spellingShingle Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis
Hoke, Gregory D.
LOW TEMPERATURE GEOCHRNOLOGY
TOPOGRAPHIC UPLIFT
FRONTAL CORDILLERA
PALEOSURFACES
title_short Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis
title_full Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis
title_fullStr Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis
title_full_unstemmed Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis
title_sort Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis
dc.creator.none.fl_str_mv Hoke, Gregory D.
Graber, Nathan R.
Mescua, Jose Francisco
Giambiagi, Laura Beatriz
Fitzgerald, Paul G.
Metcalf, James R.
author Hoke, Gregory D.
author_facet Hoke, Gregory D.
Graber, Nathan R.
Mescua, Jose Francisco
Giambiagi, Laura Beatriz
Fitzgerald, Paul G.
Metcalf, James R.
author_role author
author2 Graber, Nathan R.
Mescua, Jose Francisco
Giambiagi, Laura Beatriz
Fitzgerald, Paul G.
Metcalf, James R.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv LOW TEMPERATURE GEOCHRNOLOGY
TOPOGRAPHIC UPLIFT
FRONTAL CORDILLERA
PALEOSURFACES
topic LOW TEMPERATURE GEOCHRNOLOGY
TOPOGRAPHIC UPLIFT
FRONTAL CORDILLERA
PALEOSURFACES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Apatite (U-Th)/He thermochronology from palaeosurface-bounded vertical transects collected in deeply incised river valleys with >2 km of relief, as well as geomorphic analysis, are used to examine the timing of uplift of the Frontal Cordillera and its relation to the evolution of the proximal portions of the Andean foreland between 32° and 34°S latitude. The results of apatite (U- Th)/He (AHe) analyses are complex. However, the data show positive age-elevation trends, with higher elevation samples yielding older AHe ages than samples at lower elevation. Slope breaks occur at c. 25 Ma in both profiles, separating very slow cooling and or residence within a partial retention zone (slope of c. 10 m/Myr) at the highest elevations from a slope of c. 60-100 m/ Myr cooling rate at lower elevations. The older AHe ages suggest either (1) minimal burial of the Frontal Cordillera and/or (2) significant pre-middle Miocene local relief. Geomorphic analysis of the adjacent, east-draining Río Mendoza and Río Tunuyán catchments reveals a glacial imprint to the landscape at elevations above 3000 m, including greater channel steepness and lower profile concavities developed during glacial erosion. Detailed analysis of headwall heights provides evidence of ongoing rock uplift along the entire eastern flank of the Frontal Cordillera and in the eastern flank of the Principal Cordillera south of the slab dip transition.
Fil: Hoke, Gregory D.. Syracuse University; Estados Unidos
Fil: Graber, Nathan R.. Syracuse University; Estados Unidos
Fil: Mescua, Jose Francisco. 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: 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: Fitzgerald, Paul G.. Syracuse University; Estados Unidos
Fil: Metcalf, James R.. Syracuse University; Estados Unidos. State University of Colorado at Boulder; Estados Unidos
description Apatite (U-Th)/He thermochronology from palaeosurface-bounded vertical transects collected in deeply incised river valleys with >2 km of relief, as well as geomorphic analysis, are used to examine the timing of uplift of the Frontal Cordillera and its relation to the evolution of the proximal portions of the Andean foreland between 32° and 34°S latitude. The results of apatite (U- Th)/He (AHe) analyses are complex. However, the data show positive age-elevation trends, with higher elevation samples yielding older AHe ages than samples at lower elevation. Slope breaks occur at c. 25 Ma in both profiles, separating very slow cooling and or residence within a partial retention zone (slope of c. 10 m/Myr) at the highest elevations from a slope of c. 60-100 m/ Myr cooling rate at lower elevations. The older AHe ages suggest either (1) minimal burial of the Frontal Cordillera and/or (2) significant pre-middle Miocene local relief. Geomorphic analysis of the adjacent, east-draining Río Mendoza and Río Tunuyán catchments reveals a glacial imprint to the landscape at elevations above 3000 m, including greater channel steepness and lower profile concavities developed during glacial erosion. Detailed analysis of headwall heights provides evidence of ongoing rock uplift along the entire eastern flank of the Frontal Cordillera and in the eastern flank of the Principal Cordillera south of the slab dip transition.
publishDate 2015
dc.date.none.fl_str_mv 2015-02
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/11336/183212
Hoke, Gregory D.; Graber, Nathan R.; Mescua, Jose Francisco; Giambiagi, Laura Beatriz; Fitzgerald, Paul G.; et al.; Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis; Geological Society Publications House; Geological Society of London Special Publication; 399; 2-2015; 383-399
0305-8719
CONICET Digital
CONICET
url http://hdl.handle.net/11336/183212
identifier_str_mv Hoke, Gregory D.; Graber, Nathan R.; Mescua, Jose Francisco; Giambiagi, Laura Beatriz; Fitzgerald, Paul G.; et al.; Near pure surface uplift of the Argentine Frontal Cordillera: Insights from (U-Th)/He thermochronometry and geomorphic analysis; Geological Society Publications House; Geological Society of London Special Publication; 399; 2-2015; 383-399
0305-8719
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://www.lyellcollection.org/doi/10.1144/SP399.4
info:eu-repo/semantics/altIdentifier/doi/10.1144/SP399.4
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 Publications House
publisher.none.fl_str_mv Geological Society Publications House
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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