Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina
- Autores
- Ortiz, Gustavo Federico; Alvarado, Patricia Monica; Fosdick, Julie C.; Perucca, Laura Patricia A.; Saez, Mauro; Venerdini, Agostina Lia
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The Western Sierras Pampeanas region in the San Juan Province is characterized by thick-skinned deformation with approximately NeS trending ranges of average heights of 2500 m and a high frequency occurrence of seismic activity. Its location to the east of the mainly thin-skinned tectonics of the Argentine Precordillera fold-and-thrust belt suggests that at 30S, deformation is concentrated in a narrow zone involving these two morphostructural units. In this paper, we present new apatite (UeTh)/He results (AHe) across the northern part of the Sierra de Valle Fertil (around 30S) and analyze them in aframework of thermochronologic available datasets. We found Pliocene AHe results for Carboniferous and Triassic strata in the northern Sierra de Valle Fertil consistent with the hypothesis of recent cooling and inferred erosional denudation concentrated along the northern end of this mountain range. Ouranalysis shows that this northern region may have evolved under different conditions than the central part of the Sierra de Valle Fertil. Previous studies have observed AHe ages consistent with Permian through Cretaceous cooling, indicating the middle part of the Sierra de Valle Fertil remained near surfacebefore the Pampean slab subduction flattening process. Those studies also obtained ~5 My cooling ages in the southern part of the Sierra de Valle Fertil, which are similar to our results in the northern end of the range. Taken together, these results suggest a pattern of young deformation in the northern and southern low elevation ends of the Sierra de Valle Fertil consistent with regions of high seismic activity, and Quaternary active faulting along the western-bounding thrust fault of the Sierra de Valle Fertil.
Fil: Ortiz, Gustavo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Alvarado, Patricia Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Fosdick, Julie C.. Indiana University; Estados Unidos
Fil: Perucca, Laura Patricia A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Saez, Mauro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Venerdini, Agostina Lia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina - Materia
-
Sierra Valle Fertil
Basement-Core Upflit
Thermochronology
Flat-Slab Subduction - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/6643
Ver los metadatos del registro completo
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Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, ArgentinaOrtiz, Gustavo FedericoAlvarado, Patricia MonicaFosdick, Julie C.Perucca, Laura Patricia A.Saez, MauroVenerdini, Agostina LiaSierra Valle FertilBasement-Core UpflitThermochronologyFlat-Slab Subductionhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Western Sierras Pampeanas region in the San Juan Province is characterized by thick-skinned deformation with approximately NeS trending ranges of average heights of 2500 m and a high frequency occurrence of seismic activity. Its location to the east of the mainly thin-skinned tectonics of the Argentine Precordillera fold-and-thrust belt suggests that at 30S, deformation is concentrated in a narrow zone involving these two morphostructural units. In this paper, we present new apatite (UeTh)/He results (AHe) across the northern part of the Sierra de Valle Fertil (around 30S) and analyze them in aframework of thermochronologic available datasets. We found Pliocene AHe results for Carboniferous and Triassic strata in the northern Sierra de Valle Fertil consistent with the hypothesis of recent cooling and inferred erosional denudation concentrated along the northern end of this mountain range. Ouranalysis shows that this northern region may have evolved under different conditions than the central part of the Sierra de Valle Fertil. Previous studies have observed AHe ages consistent with Permian through Cretaceous cooling, indicating the middle part of the Sierra de Valle Fertil remained near surfacebefore the Pampean slab subduction flattening process. Those studies also obtained ~5 My cooling ages in the southern part of the Sierra de Valle Fertil, which are similar to our results in the northern end of the range. Taken together, these results suggest a pattern of young deformation in the northern and southern low elevation ends of the Sierra de Valle Fertil consistent with regions of high seismic activity, and Quaternary active faulting along the western-bounding thrust fault of the Sierra de Valle Fertil.Fil: Ortiz, Gustavo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Alvarado, Patricia Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Fosdick, Julie C.. Indiana University; Estados UnidosFil: Perucca, Laura Patricia A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Saez, Mauro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Venerdini, Agostina Lia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaElsevier2015-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/6643Ortiz, Gustavo Federico; Alvarado, Patricia Monica; Fosdick, Julie C.; Perucca, Laura Patricia A.; Saez, Mauro; et al.; Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina; Elsevier; Journal of South American Earth Sciences; 64; 2; 9-2015; 339-3500895-9811enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0895981115300523info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2015.08.015info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:57:29Zoai:ri.conicet.gov.ar:11336/6643instacron: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 09:57:29.425CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina |
title |
Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina |
spellingShingle |
Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina Ortiz, Gustavo Federico Sierra Valle Fertil Basement-Core Upflit Thermochronology Flat-Slab Subduction |
title_short |
Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina |
title_full |
Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina |
title_fullStr |
Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina |
title_full_unstemmed |
Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina |
title_sort |
Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina |
dc.creator.none.fl_str_mv |
Ortiz, Gustavo Federico Alvarado, Patricia Monica Fosdick, Julie C. Perucca, Laura Patricia A. Saez, Mauro Venerdini, Agostina Lia |
author |
Ortiz, Gustavo Federico |
author_facet |
Ortiz, Gustavo Federico Alvarado, Patricia Monica Fosdick, Julie C. Perucca, Laura Patricia A. Saez, Mauro Venerdini, Agostina Lia |
author_role |
author |
author2 |
Alvarado, Patricia Monica Fosdick, Julie C. Perucca, Laura Patricia A. Saez, Mauro Venerdini, Agostina Lia |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Sierra Valle Fertil Basement-Core Upflit Thermochronology Flat-Slab Subduction |
topic |
Sierra Valle Fertil Basement-Core Upflit Thermochronology Flat-Slab Subduction |
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 Western Sierras Pampeanas region in the San Juan Province is characterized by thick-skinned deformation with approximately NeS trending ranges of average heights of 2500 m and a high frequency occurrence of seismic activity. Its location to the east of the mainly thin-skinned tectonics of the Argentine Precordillera fold-and-thrust belt suggests that at 30S, deformation is concentrated in a narrow zone involving these two morphostructural units. In this paper, we present new apatite (UeTh)/He results (AHe) across the northern part of the Sierra de Valle Fertil (around 30S) and analyze them in aframework of thermochronologic available datasets. We found Pliocene AHe results for Carboniferous and Triassic strata in the northern Sierra de Valle Fertil consistent with the hypothesis of recent cooling and inferred erosional denudation concentrated along the northern end of this mountain range. Ouranalysis shows that this northern region may have evolved under different conditions than the central part of the Sierra de Valle Fertil. Previous studies have observed AHe ages consistent with Permian through Cretaceous cooling, indicating the middle part of the Sierra de Valle Fertil remained near surfacebefore the Pampean slab subduction flattening process. Those studies also obtained ~5 My cooling ages in the southern part of the Sierra de Valle Fertil, which are similar to our results in the northern end of the range. Taken together, these results suggest a pattern of young deformation in the northern and southern low elevation ends of the Sierra de Valle Fertil consistent with regions of high seismic activity, and Quaternary active faulting along the western-bounding thrust fault of the Sierra de Valle Fertil. Fil: Ortiz, Gustavo Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina Fil: Alvarado, Patricia Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina Fil: Fosdick, Julie C.. Indiana University; Estados Unidos Fil: Perucca, Laura Patricia A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina Fil: Saez, Mauro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina Fil: Venerdini, Agostina Lia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina |
description |
The Western Sierras Pampeanas region in the San Juan Province is characterized by thick-skinned deformation with approximately NeS trending ranges of average heights of 2500 m and a high frequency occurrence of seismic activity. Its location to the east of the mainly thin-skinned tectonics of the Argentine Precordillera fold-and-thrust belt suggests that at 30S, deformation is concentrated in a narrow zone involving these two morphostructural units. In this paper, we present new apatite (UeTh)/He results (AHe) across the northern part of the Sierra de Valle Fertil (around 30S) and analyze them in aframework of thermochronologic available datasets. We found Pliocene AHe results for Carboniferous and Triassic strata in the northern Sierra de Valle Fertil consistent with the hypothesis of recent cooling and inferred erosional denudation concentrated along the northern end of this mountain range. Ouranalysis shows that this northern region may have evolved under different conditions than the central part of the Sierra de Valle Fertil. Previous studies have observed AHe ages consistent with Permian through Cretaceous cooling, indicating the middle part of the Sierra de Valle Fertil remained near surfacebefore the Pampean slab subduction flattening process. Those studies also obtained ~5 My cooling ages in the southern part of the Sierra de Valle Fertil, which are similar to our results in the northern end of the range. Taken together, these results suggest a pattern of young deformation in the northern and southern low elevation ends of the Sierra de Valle Fertil consistent with regions of high seismic activity, and Quaternary active faulting along the western-bounding thrust fault of the Sierra de Valle Fertil. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09 |
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/11336/6643 Ortiz, Gustavo Federico; Alvarado, Patricia Monica; Fosdick, Julie C.; Perucca, Laura Patricia A.; Saez, Mauro; et al.; Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina; Elsevier; Journal of South American Earth Sciences; 64; 2; 9-2015; 339-350 0895-9811 |
url |
http://hdl.handle.net/11336/6643 |
identifier_str_mv |
Ortiz, Gustavo Federico; Alvarado, Patricia Monica; Fosdick, Julie C.; Perucca, Laura Patricia A.; Saez, Mauro; et al.; Active deformation in the northern Sierra de Valle Fertil, Sierras Pampeanas, Argentina; Elsevier; Journal of South American Earth Sciences; 64; 2; 9-2015; 339-350 0895-9811 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0895981115300523 info:eu-repo/semantics/altIdentifier/doi/ info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2015.08.015 |
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 application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
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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1844613719520182272 |
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13.070432 |