Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)

Paleomagnetic data from the Lomas del Mirador (34° 39.29’ S, 58° 32.17’ W) sedimentary section in northeastern Buenos Aires province (Argentina) comprises 149 oriented samples that record a significant but gentle gradual change in the geomagnetic field at the terminal Pleistocene and Holocene. Based...

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Detalles Bibliográficos
Autor: Nami, Hugo Gabriel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2006
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/93086
Acceso en línea:http://hdl.handle.net/11336/93086
Access Level:acceso abierto
Palabra clave:PALEOMAGNETISM
paleosecular variation
terminal Pleistocene
Holocene
South America
Argentina
https://purl.org/becyt/ford/6.1
https://purl.org/becyt/ford/6
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oai_identifier_str oai:ri.conicet.gov.ar:11336/93086
network_acronym_str AR
network_name_str Argentina
repository_id_str
spelling Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)Nami, Hugo GabrielPALEOMAGNETISMpaleosecular variationterminal PleistoceneHoloceneSouth AmericaArgentinahttps://purl.org/becyt/ford/6.1https://purl.org/becyt/ford/6Paleomagnetic data from the Lomas del Mirador (34° 39.29’ S, 58° 32.17’ W) sedimentary section in northeastern Buenos Aires province (Argentina) comprises 149 oriented samples that record a significant but gentle gradual change in the geomagnetic field at the terminal Pleistocene and Holocene. Based on rock magnetic and detrital remanence experiments, the deposit seems to be a good recorder of the past geomagnetic field behavior. The characteristic remanent magnetization (ChRM), determined by progressive AF demagnetization, shows that the sections registered normal and intermediate polarities during the terminal Pleistocene/Holocen e. The PSV is characterized by a large variation with ~ 80° difference in inclination in both sections and a significant but gentle westward shift in the declination in the upper part. A similar trend was observed in the paleomagnetic record registered in other sections from northeastern Argentina. This remarkably large PSV, especially the inclination record, became a reliable chronostratigraphical marker for latest Pleistocene/Holocene sedimentary deposits in northeastern Buenos Aires. VGPs resemble those registered during terminal Pleistocene and Holocene in the southern cone of South America. Palaeomagnetic  poles for the sections other contemporaneous sites from northeastern Argentina fall some ~ 5–15° away from the Earth’s rotation’s axis.Fil: Nami, Hugo Gabriel. 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; ArgentinaThe University of Zagreb. Faculty of Science. Andrija Mohorovicic Geophysical Institute2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/93086Nami, Hugo Gabriel; Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina); The University of Zagreb. Faculty of Science. Andrija Mohorovicic Geophysical Institute; Geofizika; 23; 2; 12-2006; 119-1410352-36591846-6346CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://hrcak.srce.hr/16725info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:09:43Zoai:ri.conicet.gov.ar:11336/93086instacron: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:34982024-05-08 14:09:43.51CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)
title Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)
spellingShingle Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)
Nami, Hugo Gabriel
PALEOMAGNETISM
paleosecular variation
terminal Pleistocene
Holocene
South America
Argentina
https://purl.org/becyt/ford/6.1
https://purl.org/becyt/ford/6
title_short Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)
title_full Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)
title_fullStr Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)
title_full_unstemmed Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)
title_sort Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina)
dc.creator.none.fl_str_mv Nami, Hugo Gabriel
author Nami, Hugo Gabriel
author_facet Nami, Hugo Gabriel
author_role author
dc.subject.none.fl_str_mv PALEOMAGNETISM
paleosecular variation
terminal Pleistocene
Holocene
South America
Argentina
https://purl.org/becyt/ford/6.1
https://purl.org/becyt/ford/6
topic PALEOMAGNETISM
paleosecular variation
terminal Pleistocene
Holocene
South America
Argentina
https://purl.org/becyt/ford/6.1
https://purl.org/becyt/ford/6
description Paleomagnetic data from the Lomas del Mirador (34° 39.29’ S, 58° 32.17’ W) sedimentary section in northeastern Buenos Aires province (Argentina) comprises 149 oriented samples that record a significant but gentle gradual change in the geomagnetic field at the terminal Pleistocene and Holocene. Based on rock magnetic and detrital remanence experiments, the deposit seems to be a good recorder of the past geomagnetic field behavior. The characteristic remanent magnetization (ChRM), determined by progressive AF demagnetization, shows that the sections registered normal and intermediate polarities during the terminal Pleistocene/Holocen e. The PSV is characterized by a large variation with ~ 80° difference in inclination in both sections and a significant but gentle westward shift in the declination in the upper part. A similar trend was observed in the paleomagnetic record registered in other sections from northeastern Argentina. This remarkably large PSV, especially the inclination record, became a reliable chronostratigraphical marker for latest Pleistocene/Holocene sedimentary deposits in northeastern Buenos Aires. VGPs resemble those registered during terminal Pleistocene and Holocene in the southern cone of South America. Palaeomagnetic  poles for the sections other contemporaneous sites from northeastern Argentina fall some ~ 5–15° away from the Earth’s rotation’s axis.
publishDate 2006
dc.date.none.fl_str_mv 2006-12
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/11336/93086
Nami, Hugo Gabriel; Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina); The University of Zagreb. Faculty of Science. Andrija Mohorovicic Geophysical Institute; Geofizika; 23; 2; 12-2006; 119-141
0352-3659
1846-6346
CONICET Digital
CONICET
url http://hdl.handle.net/11336/93086
identifier_str_mv Nami, Hugo Gabriel; Preliminary paleomagnetic results of a terminal pleistocene/holocene record from northeastern Buenos Aires province (Argentina); The University of Zagreb. Faculty of Science. Andrija Mohorovicic Geophysical Institute; Geofizika; 23; 2; 12-2006; 119-141
0352-3659
1846-6346
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://hrcak.srce.hr/16725
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 The University of Zagreb. Faculty of Science. Andrija Mohorovicic Geophysical Institute
publisher.none.fl_str_mv The University of Zagreb. Faculty of Science. Andrija Mohorovicic Geophysical Institute
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15,812429

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