Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Front...

Autores
Sanchez, Marcos Ariel; Lince Klinger, Federico Gustavo; Martinez, Myriam Patricia; Alvarez Pontoriero, Orlando; Ruiz, Francisco; Weidmann, María Cecilia; Folguera Telichevsky, Andres
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Nazca Plate subducting beneath the South American Plate, has strongly influenced Cenozoic-mountain growth in western Argentina and Chile sectors (32-34°S; 70-66° W). Particularly, at these latitudes, the Pampean flat slab has induced the development of prominent mountain systems such as, the Frontal Cordillera, the Precordillera, and the associated Sierras Pampeanas in the eastward foreland region. Through a gravity study from the Frontal Cordillera to the Sierras Pampeanas region between 32-34° S, we delimit a series of geological structures that are accommodating shortening in the upper crust and others of regional and subsurface development, without a clearly defined mechanics of deformation. Additionally, through an isostatic residual anomaly map, based on the Airy-Heiskanen local compensation model, we obtain a decompensative gravity anomaly map that highlights anomalous gravity sources emplaced in the upper crust and related with known geological structures. In particular, applying the Tilt method, that enhances the gravity anomalies, the NW-trending Tunuyan Lineament is depicted south of 33.4° S following previous proposals. Using the decompensative gravity anomaly, two profiles were modeled through the northern sector of the study area, using as constraints deep seismic refraction lines, borehole data and geological information. These are 39 density models of the upper crust of this structurally complex area that represent accurately basin 40 geometries and basement topography that constitute a framework for future geological analysis
Fil: Sanchez, Marcos Ariel. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lince Klinger, Federico Gustavo. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Martinez, Myriam Patricia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Alvarez Pontoriero, Orlando. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ruiz, Francisco. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina
Fil: Weidmann, María Cecilia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Folguera Telichevsky, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos; Argentina
Materia
Tunuyan Lineament
Tilt Method
Gravity Anomaly
Model
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:11336/4972

id CONICETDig_1c20ede828a4135a569b55105729ab80
oai_identifier_str oai:ri.conicet.gov.ar:11336/4972
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras PampeanasSanchez, Marcos ArielLince Klinger, Federico GustavoMartinez, Myriam PatriciaAlvarez Pontoriero, OrlandoRuiz, FranciscoWeidmann, María CeciliaFolguera Telichevsky, AndresTunuyan LineamentTilt MethodGravity AnomalyModelhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Nazca Plate subducting beneath the South American Plate, has strongly influenced Cenozoic-mountain growth in western Argentina and Chile sectors (32-34°S; 70-66° W). Particularly, at these latitudes, the Pampean flat slab has induced the development of prominent mountain systems such as, the Frontal Cordillera, the Precordillera, and the associated Sierras Pampeanas in the eastward foreland region. Through a gravity study from the Frontal Cordillera to the Sierras Pampeanas region between 32-34° S, we delimit a series of geological structures that are accommodating shortening in the upper crust and others of regional and subsurface development, without a clearly defined mechanics of deformation. Additionally, through an isostatic residual anomaly map, based on the Airy-Heiskanen local compensation model, we obtain a decompensative gravity anomaly map that highlights anomalous gravity sources emplaced in the upper crust and related with known geological structures. In particular, applying the Tilt method, that enhances the gravity anomalies, the NW-trending Tunuyan Lineament is depicted south of 33.4° S following previous proposals. Using the decompensative gravity anomaly, two profiles were modeled through the northern sector of the study area, using as constraints deep seismic refraction lines, borehole data and geological information. These are 39 density models of the upper crust of this structurally complex area that represent accurately basin 40 geometries and basement topography that constitute a framework for future geological analysisFil: Sanchez, Marcos Ariel. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lince Klinger, Federico Gustavo. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Martinez, Myriam Patricia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; ArgentinaFil: Alvarez Pontoriero, Orlando. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ruiz, Francisco. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; ArgentinaFil: Weidmann, María Cecilia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Folguera Telichevsky, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos; ArgentinaLyell Collection2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4972Sanchez, Marcos Ariel; Lince Klinger, Federico Gustavo; Martinez, Myriam Patricia; Alvarez Pontoriero, Orlando; Ruiz, Francisco; et al.; Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas; Lyell Collection; Geological London Society Special Publication; 399; 2-2014; 167-1822041-4927enginfo:eu-repo/semantics/altIdentifier/url/http://sp.lyellcollection.org/content/399/1/167.abstractinfo:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1144/SP399.12info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:02:52Zoai:ri.conicet.gov.ar:11336/4972instacron: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:34982025-09-03 10:02:52.672CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas
title Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas
spellingShingle Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas
Sanchez, Marcos Ariel
Tunuyan Lineament
Tilt Method
Gravity Anomaly
Model
title_short Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas
title_full Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas
title_fullStr Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas
title_full_unstemmed Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas
title_sort Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas
dc.creator.none.fl_str_mv Sanchez, Marcos Ariel
Lince Klinger, Federico Gustavo
Martinez, Myriam Patricia
Alvarez Pontoriero, Orlando
Ruiz, Francisco
Weidmann, María Cecilia
Folguera Telichevsky, Andres
author Sanchez, Marcos Ariel
author_facet Sanchez, Marcos Ariel
Lince Klinger, Federico Gustavo
Martinez, Myriam Patricia
Alvarez Pontoriero, Orlando
Ruiz, Francisco
Weidmann, María Cecilia
Folguera Telichevsky, Andres
author_role author
author2 Lince Klinger, Federico Gustavo
Martinez, Myriam Patricia
Alvarez Pontoriero, Orlando
Ruiz, Francisco
Weidmann, María Cecilia
Folguera Telichevsky, Andres
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Tunuyan Lineament
Tilt Method
Gravity Anomaly
Model
topic Tunuyan Lineament
Tilt Method
Gravity Anomaly
Model
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 Nazca Plate subducting beneath the South American Plate, has strongly influenced Cenozoic-mountain growth in western Argentina and Chile sectors (32-34°S; 70-66° W). Particularly, at these latitudes, the Pampean flat slab has induced the development of prominent mountain systems such as, the Frontal Cordillera, the Precordillera, and the associated Sierras Pampeanas in the eastward foreland region. Through a gravity study from the Frontal Cordillera to the Sierras Pampeanas region between 32-34° S, we delimit a series of geological structures that are accommodating shortening in the upper crust and others of regional and subsurface development, without a clearly defined mechanics of deformation. Additionally, through an isostatic residual anomaly map, based on the Airy-Heiskanen local compensation model, we obtain a decompensative gravity anomaly map that highlights anomalous gravity sources emplaced in the upper crust and related with known geological structures. In particular, applying the Tilt method, that enhances the gravity anomalies, the NW-trending Tunuyan Lineament is depicted south of 33.4° S following previous proposals. Using the decompensative gravity anomaly, two profiles were modeled through the northern sector of the study area, using as constraints deep seismic refraction lines, borehole data and geological information. These are 39 density models of the upper crust of this structurally complex area that represent accurately basin 40 geometries and basement topography that constitute a framework for future geological analysis
Fil: Sanchez, Marcos Ariel. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Lince Klinger, Federico Gustavo. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Martinez, Myriam Patricia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico San Juan. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
Fil: Alvarez Pontoriero, Orlando. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Ruiz, Francisco. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina
Fil: Weidmann, María Cecilia. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Fisicas y Naturales. Instituto Geofisico Sismologico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Folguera Telichevsky, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos; Argentina
description The Nazca Plate subducting beneath the South American Plate, has strongly influenced Cenozoic-mountain growth in western Argentina and Chile sectors (32-34°S; 70-66° W). Particularly, at these latitudes, the Pampean flat slab has induced the development of prominent mountain systems such as, the Frontal Cordillera, the Precordillera, and the associated Sierras Pampeanas in the eastward foreland region. Through a gravity study from the Frontal Cordillera to the Sierras Pampeanas region between 32-34° S, we delimit a series of geological structures that are accommodating shortening in the upper crust and others of regional and subsurface development, without a clearly defined mechanics of deformation. Additionally, through an isostatic residual anomaly map, based on the Airy-Heiskanen local compensation model, we obtain a decompensative gravity anomaly map that highlights anomalous gravity sources emplaced in the upper crust and related with known geological structures. In particular, applying the Tilt method, that enhances the gravity anomalies, the NW-trending Tunuyan Lineament is depicted south of 33.4° S following previous proposals. Using the decompensative gravity anomaly, two profiles were modeled through the northern sector of the study area, using as constraints deep seismic refraction lines, borehole data and geological information. These are 39 density models of the upper crust of this structurally complex area that represent accurately basin 40 geometries and basement topography that constitute a framework for future geological analysis
publishDate 2014
dc.date.none.fl_str_mv 2014-02
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/11336/4972
Sanchez, Marcos Ariel; Lince Klinger, Federico Gustavo; Martinez, Myriam Patricia; Alvarez Pontoriero, Orlando; Ruiz, Francisco; et al.; Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas; Lyell Collection; Geological London Society Special Publication; 399; 2-2014; 167-182
2041-4927
url http://hdl.handle.net/11336/4972
identifier_str_mv Sanchez, Marcos Ariel; Lince Klinger, Federico Gustavo; Martinez, Myriam Patricia; Alvarez Pontoriero, Orlando; Ruiz, Francisco; et al.; Geophysical characterization of the upper crust in the transitional zone between the Pampean flat slab and the normal subduction segment to the south (32– 348S): Andes of the Frontal Cordillera to the Sierras Pampeanas; Lyell Collection; Geological London Society Special Publication; 399; 2-2014; 167-182
2041-4927
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://sp.lyellcollection.org/content/399/1/167.abstract
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1144/SP399.12
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 Lyell Collection
publisher.none.fl_str_mv Lyell Collection
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
_version_ 1842269775153070080
score 13.13397