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
Institución: Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador: oai:ri.conicet.gov.ar:11336/4972

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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 Técnicas2025-09-29T10:19:11Zoai: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:34982025-09-29 10:19:11.405CONICET 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
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dc.publisher.none.fl_str_mv	Lyell Collection
publisher.none.fl_str_mv	Lyell Collection
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repository.mail.fl_str_mv	dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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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...

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