Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 2...

Autores
Giambiagi, Laura Beatriz; Alvarez, Pamela; Spagnotto, Silvana Liz
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In order to understand the response of the stress field state to intrinsic processes during the construction of the Andes, such as thickening of the continental crust, lithospheric delamination, and/or thermal weakening, we investigate the stress field evolution of the arc region since the last 20 Myr, in the central Andes (22–26.5°S). The 43 reduced paleostress tensors derived from inversion of 682 fault slip data reveal a complex pattern of stress states during the last episode of orogenic construction and topographic uplift. We identify two geodynamic stages: the first stage corresponds to the construction of the Altiplano/Puna plateau and the second one to its gravitational collapse. Four stress states that have prevailed in the Altiplano/Puna plateau since middle Miocene times characterize the transition from one stage to the other. Along the study latitudes, a spatiotemporal change in stress state is clearly observed, which led to an understanding that a change in the stress field may be related not only to the boundary conditions but also to intrinsic factors associated with the construction of the Andean orogeny. Our results suggest that approximately at 13–10 Ma and approximately 8–5 Ma, in the southern Altiplano and northern Puna, and in the southern Puna, respectively, regional elevation and crustal thicknesses reached threshold values necessary to generate the orogenic collapse.
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: Alvarez, Pamela. Tehema S.a.; Chile
Fil: Spagnotto, Silvana Liz. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
ALTIPLANO/PUNA PLATEAU
CENTRAL ANDES
OROGENIC CONSTRUCTION
PALEOSTRESS ANALYSIS
STRESS FIELD EVOLUTION
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:11336/182950
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/182950
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 MaGiambiagi, Laura BeatrizAlvarez, PamelaSpagnotto, Silvana LizALTIPLANO/PUNA PLATEAUCENTRAL ANDESOROGENIC CONSTRUCTIONPALEOSTRESS ANALYSISSTRESS FIELD EVOLUTIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1In order to understand the response of the stress field state to intrinsic processes during the construction of the Andes, such as thickening of the continental crust, lithospheric delamination, and/or thermal weakening, we investigate the stress field evolution of the arc region since the last 20 Myr, in the central Andes (22–26.5°S). The 43 reduced paleostress tensors derived from inversion of 682 fault slip data reveal a complex pattern of stress states during the last episode of orogenic construction and topographic uplift. We identify two geodynamic stages: the first stage corresponds to the construction of the Altiplano/Puna plateau and the second one to its gravitational collapse. Four stress states that have prevailed in the Altiplano/Puna plateau since middle Miocene times characterize the transition from one stage to the other. Along the study latitudes, a spatiotemporal change in stress state is clearly observed, which led to an understanding that a change in the stress field may be related not only to the boundary conditions but also to intrinsic factors associated with the construction of the Andean orogeny. Our results suggest that approximately at 13–10 Ma and approximately 8–5 Ma, in the southern Altiplano and northern Puna, and in the southern Puna, respectively, regional elevation and crustal thicknesses reached threshold values necessary to generate the orogenic collapse.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; ArgentinaFil: Alvarez, Pamela. Tehema S.a.; ChileFil: Spagnotto, Silvana Liz. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaWiley Blackwell Publishing, Inc2016-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/182950Giambiagi, Laura Beatriz; Alvarez, Pamela; Spagnotto, Silvana Liz; Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma; Wiley Blackwell Publishing, Inc; Tectonics; 35; 9; 9-2016; 2014-20330278-74071944-9194CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016TC004201info:eu-repo/semantics/altIdentifier/doi/10.1002/2016TC004201info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:41:58Zoai:ri.conicet.gov.ar:11336/182950instacron: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 10:41:58.302CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma
title Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma
spellingShingle Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma
Giambiagi, Laura Beatriz
ALTIPLANO/PUNA PLATEAU
CENTRAL ANDES
OROGENIC CONSTRUCTION
PALEOSTRESS ANALYSIS
STRESS FIELD EVOLUTION
title_short Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma
title_full Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma
title_fullStr Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma
title_full_unstemmed Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma
title_sort Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma
dc.creator.none.fl_str_mv Giambiagi, Laura Beatriz
Alvarez, Pamela
Spagnotto, Silvana Liz
author Giambiagi, Laura Beatriz
author_facet Giambiagi, Laura Beatriz
Alvarez, Pamela
Spagnotto, Silvana Liz
author_role author
author2 Alvarez, Pamela
Spagnotto, Silvana Liz
author2_role author
author
dc.subject.none.fl_str_mv ALTIPLANO/PUNA PLATEAU
CENTRAL ANDES
OROGENIC CONSTRUCTION
PALEOSTRESS ANALYSIS
STRESS FIELD EVOLUTION
topic ALTIPLANO/PUNA PLATEAU
CENTRAL ANDES
OROGENIC CONSTRUCTION
PALEOSTRESS ANALYSIS
STRESS FIELD EVOLUTION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In order to understand the response of the stress field state to intrinsic processes during the construction of the Andes, such as thickening of the continental crust, lithospheric delamination, and/or thermal weakening, we investigate the stress field evolution of the arc region since the last 20 Myr, in the central Andes (22–26.5°S). The 43 reduced paleostress tensors derived from inversion of 682 fault slip data reveal a complex pattern of stress states during the last episode of orogenic construction and topographic uplift. We identify two geodynamic stages: the first stage corresponds to the construction of the Altiplano/Puna plateau and the second one to its gravitational collapse. Four stress states that have prevailed in the Altiplano/Puna plateau since middle Miocene times characterize the transition from one stage to the other. Along the study latitudes, a spatiotemporal change in stress state is clearly observed, which led to an understanding that a change in the stress field may be related not only to the boundary conditions but also to intrinsic factors associated with the construction of the Andean orogeny. Our results suggest that approximately at 13–10 Ma and approximately 8–5 Ma, in the southern Altiplano and northern Puna, and in the southern Puna, respectively, regional elevation and crustal thicknesses reached threshold values necessary to generate the orogenic collapse.
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: Alvarez, Pamela. Tehema S.a.; Chile
Fil: Spagnotto, Silvana Liz. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description In order to understand the response of the stress field state to intrinsic processes during the construction of the Andes, such as thickening of the continental crust, lithospheric delamination, and/or thermal weakening, we investigate the stress field evolution of the arc region since the last 20 Myr, in the central Andes (22–26.5°S). The 43 reduced paleostress tensors derived from inversion of 682 fault slip data reveal a complex pattern of stress states during the last episode of orogenic construction and topographic uplift. We identify two geodynamic stages: the first stage corresponds to the construction of the Altiplano/Puna plateau and the second one to its gravitational collapse. Four stress states that have prevailed in the Altiplano/Puna plateau since middle Miocene times characterize the transition from one stage to the other. Along the study latitudes, a spatiotemporal change in stress state is clearly observed, which led to an understanding that a change in the stress field may be related not only to the boundary conditions but also to intrinsic factors associated with the construction of the Andean orogeny. Our results suggest that approximately at 13–10 Ma and approximately 8–5 Ma, in the southern Altiplano and northern Puna, and in the southern Puna, respectively, regional elevation and crustal thicknesses reached threshold values necessary to generate the orogenic collapse.
publishDate 2016
dc.date.none.fl_str_mv 2016-09
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/11336/182950
Giambiagi, Laura Beatriz; Alvarez, Pamela; Spagnotto, Silvana Liz; Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma; Wiley Blackwell Publishing, Inc; Tectonics; 35; 9; 9-2016; 2014-2033
0278-7407
1944-9194
CONICET Digital
CONICET
url http://hdl.handle.net/11336/182950
identifier_str_mv Giambiagi, Laura Beatriz; Alvarez, Pamela; Spagnotto, Silvana Liz; Temporal variation of the stress field during the construction of the central Andes: Constrains from the volcanic arc region (22–26°S), Western Cordillera, Chile, during the last 20 Ma; Wiley Blackwell Publishing, Inc; Tectonics; 35; 9; 9-2016; 2014-2033
0278-7407
1944-9194
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://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2016TC004201
info:eu-repo/semantics/altIdentifier/doi/10.1002/2016TC004201
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
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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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