A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia

Autores
Calvagno, Juan Martín; Gallo, Leandro César; Tomezzoli, Renata Nela; Cristallini, Ernesto Osvaldo; Dalenz Farjat, Alejandra; Hernández, Roberto Mario
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New paleomagnetic and anisotropy of magnetic susceptibility (AMS) studies were performed in the southern Subandes of Bolivia in order to assess vertical axis rotations in a poorly studied area. Due to the presence of polarity reversals, it was possible to perform a reversal test that provided evidence of a reliable paleomagnetic record interpreted to be primary. In an area where vertical axis rotations are a principal component of deformation, we have developed a nonparametric method for the determination of tectonic rotations. We calculated a paleomagnetic pole for the Miocene Tariquia Formation (Lat. = 78.4° S, Long. = 113.1° E, A95 = 3.5°, N = 72, K = 23.73, Slat = 22.08°, SLon = 64.06°) and from our results, rotations around vertical axes, commonly sought around the Arica-Santa Cruz bend were ruled out. From the integration of paleomagnetic and AMS results, it was seen that the magnetic lineation lies within the bedding plane, consistent with the early stages of layer parallel shortening. However, it is not parallel to the structural trend, implying material displacement parallel to it. In concomitance with paleomagnetic results, this allows us to argue that a local change in the azimuth of the structures at this latitude could be the consequence of an asymmetric or heterogeneous basement and/or exogenous agents like differences in erosion along the course of the structures during the evolution of the Bolivian fold and thrust belt.
Fil: Calvagno, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Gallo, Leandro César. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Tomezzoli, Renata Nela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Cristallini, Ernesto Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Dalenz Farjat, Alejandra. XR-GEOMAP; Argentina
Fil: Hernández, Roberto Mario. La - Te Andes S.a. Laboratorio de Termocronologia de Los Andes.; Argentina. XR-GEOMAP; Argentina
Materia
ANISOTROPY OF MAGNETIC SUSCEPTIBILITY
CENTRAL ANDEAN ROTATION PATTERN
PALEOMAGNETISM
ROCK MAGNETISM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/120282
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of BoliviaCalvagno, Juan MartínGallo, Leandro CésarTomezzoli, Renata NelaCristallini, Ernesto OsvaldoDalenz Farjat, AlejandraHernández, Roberto MarioANISOTROPY OF MAGNETIC SUSCEPTIBILITYCENTRAL ANDEAN ROTATION PATTERNPALEOMAGNETISMROCK MAGNETISMhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1New paleomagnetic and anisotropy of magnetic susceptibility (AMS) studies were performed in the southern Subandes of Bolivia in order to assess vertical axis rotations in a poorly studied area. Due to the presence of polarity reversals, it was possible to perform a reversal test that provided evidence of a reliable paleomagnetic record interpreted to be primary. In an area where vertical axis rotations are a principal component of deformation, we have developed a nonparametric method for the determination of tectonic rotations. We calculated a paleomagnetic pole for the Miocene Tariquia Formation (Lat. = 78.4° S, Long. = 113.1° E, A95 = 3.5°, N = 72, K = 23.73, Slat = 22.08°, SLon = 64.06°) and from our results, rotations around vertical axes, commonly sought around the Arica-Santa Cruz bend were ruled out. From the integration of paleomagnetic and AMS results, it was seen that the magnetic lineation lies within the bedding plane, consistent with the early stages of layer parallel shortening. However, it is not parallel to the structural trend, implying material displacement parallel to it. In concomitance with paleomagnetic results, this allows us to argue that a local change in the azimuth of the structures at this latitude could be the consequence of an asymmetric or heterogeneous basement and/or exogenous agents like differences in erosion along the course of the structures during the evolution of the Bolivian fold and thrust belt.Fil: Calvagno, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Gallo, Leandro César. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Tomezzoli, Renata Nela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Cristallini, Ernesto Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Dalenz Farjat, Alejandra. XR-GEOMAP; ArgentinaFil: Hernández, Roberto Mario. La - Te Andes S.a. Laboratorio de Termocronologia de Los Andes.; Argentina. XR-GEOMAP; ArgentinaPergamon-Elsevier Science Ltd2020-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/120282Calvagno, Juan Martín; Gallo, Leandro César; Tomezzoli, Renata Nela; Cristallini, Ernesto Osvaldo; Dalenz Farjat, Alejandra; et al.; A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 98; 3-2020; 1-48; 1024700895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2019.102470info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0895981119304535info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:38:23Zoai:ri.conicet.gov.ar:11336/120282instacron: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 10:38:23.447CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia
title A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia
spellingShingle A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia
Calvagno, Juan Martín
ANISOTROPY OF MAGNETIC SUSCEPTIBILITY
CENTRAL ANDEAN ROTATION PATTERN
PALEOMAGNETISM
ROCK MAGNETISM
title_short A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia
title_full A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia
title_fullStr A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia
title_full_unstemmed A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia
title_sort A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia
dc.creator.none.fl_str_mv Calvagno, Juan Martín
Gallo, Leandro César
Tomezzoli, Renata Nela
Cristallini, Ernesto Osvaldo
Dalenz Farjat, Alejandra
Hernández, Roberto Mario
author Calvagno, Juan Martín
author_facet Calvagno, Juan Martín
Gallo, Leandro César
Tomezzoli, Renata Nela
Cristallini, Ernesto Osvaldo
Dalenz Farjat, Alejandra
Hernández, Roberto Mario
author_role author
author2 Gallo, Leandro César
Tomezzoli, Renata Nela
Cristallini, Ernesto Osvaldo
Dalenz Farjat, Alejandra
Hernández, Roberto Mario
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv ANISOTROPY OF MAGNETIC SUSCEPTIBILITY
CENTRAL ANDEAN ROTATION PATTERN
PALEOMAGNETISM
ROCK MAGNETISM
topic ANISOTROPY OF MAGNETIC SUSCEPTIBILITY
CENTRAL ANDEAN ROTATION PATTERN
PALEOMAGNETISM
ROCK MAGNETISM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv New paleomagnetic and anisotropy of magnetic susceptibility (AMS) studies were performed in the southern Subandes of Bolivia in order to assess vertical axis rotations in a poorly studied area. Due to the presence of polarity reversals, it was possible to perform a reversal test that provided evidence of a reliable paleomagnetic record interpreted to be primary. In an area where vertical axis rotations are a principal component of deformation, we have developed a nonparametric method for the determination of tectonic rotations. We calculated a paleomagnetic pole for the Miocene Tariquia Formation (Lat. = 78.4° S, Long. = 113.1° E, A95 = 3.5°, N = 72, K = 23.73, Slat = 22.08°, SLon = 64.06°) and from our results, rotations around vertical axes, commonly sought around the Arica-Santa Cruz bend were ruled out. From the integration of paleomagnetic and AMS results, it was seen that the magnetic lineation lies within the bedding plane, consistent with the early stages of layer parallel shortening. However, it is not parallel to the structural trend, implying material displacement parallel to it. In concomitance with paleomagnetic results, this allows us to argue that a local change in the azimuth of the structures at this latitude could be the consequence of an asymmetric or heterogeneous basement and/or exogenous agents like differences in erosion along the course of the structures during the evolution of the Bolivian fold and thrust belt.
Fil: Calvagno, Juan Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Gallo, Leandro César. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Tomezzoli, Renata Nela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Cristallini, Ernesto Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Dalenz Farjat, Alejandra. XR-GEOMAP; Argentina
Fil: Hernández, Roberto Mario. La - Te Andes S.a. Laboratorio de Termocronologia de Los Andes.; Argentina. XR-GEOMAP; Argentina
description New paleomagnetic and anisotropy of magnetic susceptibility (AMS) studies were performed in the southern Subandes of Bolivia in order to assess vertical axis rotations in a poorly studied area. Due to the presence of polarity reversals, it was possible to perform a reversal test that provided evidence of a reliable paleomagnetic record interpreted to be primary. In an area where vertical axis rotations are a principal component of deformation, we have developed a nonparametric method for the determination of tectonic rotations. We calculated a paleomagnetic pole for the Miocene Tariquia Formation (Lat. = 78.4° S, Long. = 113.1° E, A95 = 3.5°, N = 72, K = 23.73, Slat = 22.08°, SLon = 64.06°) and from our results, rotations around vertical axes, commonly sought around the Arica-Santa Cruz bend were ruled out. From the integration of paleomagnetic and AMS results, it was seen that the magnetic lineation lies within the bedding plane, consistent with the early stages of layer parallel shortening. However, it is not parallel to the structural trend, implying material displacement parallel to it. In concomitance with paleomagnetic results, this allows us to argue that a local change in the azimuth of the structures at this latitude could be the consequence of an asymmetric or heterogeneous basement and/or exogenous agents like differences in erosion along the course of the structures during the evolution of the Bolivian fold and thrust belt.
publishDate 2020
dc.date.none.fl_str_mv 2020-03
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/11336/120282
Calvagno, Juan Martín; Gallo, Leandro César; Tomezzoli, Renata Nela; Cristallini, Ernesto Osvaldo; Dalenz Farjat, Alejandra; et al.; A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 98; 3-2020; 1-48; 102470
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/120282
identifier_str_mv Calvagno, Juan Martín; Gallo, Leandro César; Tomezzoli, Renata Nela; Cristallini, Ernesto Osvaldo; Dalenz Farjat, Alejandra; et al.; A new constraint on the central Andean rotation pattern from paleomagnetic studies in the southern Subandes of Bolivia; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 98; 3-2020; 1-48; 102470
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2019.102470
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0895981119304535
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
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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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