Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina

Autores
Nami, Hugo G.; Sinito, Ana M.
Año de publicación
1993
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Paleomagnetic studies were carried out on sediments sampled at an archaeological excavation sited on Angostura Blanca, Piedra Parada Valley, Province of Chubut (42°30'S, 69°42'W). The archaeological traces show the occupation of the site during the late holocene; this is confirmed by the C1 dating of sanóles obtained on the site (2140+50 years). The usual laboratory techniques for paleomagnetic studies were applied to isolate the directions of the stable remanent magnetization (measurements of natural remanent magnetization, demagnetization by increasing temperatures, measurements of residual remanent magnetization after each step of demagnetization). Using the isolated directions, which represent the directions of the geomagnetic field during the deposition and consolidation of the sediments, the virtual geomagnetic poles were obtained. The analysis of the results shows evidence of a possible record of a reversed polarity event on the studied sediments. This conclusion, if it is confirmed by other paleomagnetic data, would agree with the existence of the Etrussia excursion, recorded in Russia, on sediments of about 2700 years.
Material digitalizado en SEDICI gracias a la colaboración de la Facultad de Ciencias Astronómicas y Geofísicas (UNLP).
Asociación Argentina de Geofísicos y Geodestas
Materia
Geofísica
paleomagnetic studies
Holoceno
natural remanent magnetization
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/134385
Acceder
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, ArgentinaNami, Hugo G.Sinito, Ana M.Geofísicapaleomagnetic studiesHolocenonatural remanent magnetizationPaleomagnetic studies were carried out on sediments sampled at an archaeological excavation sited on Angostura Blanca, Piedra Parada Valley, Province of Chubut (42°30'S, 69°42'W). The archaeological traces show the occupation of the site during the late holocene; this is confirmed by the C1 dating of sanóles obtained on the site (2140+50 years). The usual laboratory techniques for paleomagnetic studies were applied to isolate the directions of the stable remanent magnetization (measurements of natural remanent magnetization, demagnetization by increasing temperatures, measurements of residual remanent magnetization after each step of demagnetization). Using the isolated directions, which represent the directions of the geomagnetic field during the deposition and consolidation of the sediments, the virtual geomagnetic poles were obtained. The analysis of the results shows evidence of a possible record of a reversed polarity event on the studied sediments. This conclusion, if it is confirmed by other paleomagnetic data, would agree with the existence of the Etrussia excursion, recorded in Russia, on sediments of about 2700 years.Material digitalizado en SEDICI gracias a la colaboración de la Facultad de Ciencias Astronómicas y Geofísicas (UNLP).Asociación Argentina de Geofísicos y Geodestas1993info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf19-26http://sedici.unlp.edu.ar/handle/10915/134385enginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-12-23T11:35:59Zoai:sedici.unlp.edu.ar:10915/134385Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-12-23 11:35:59.55SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina
title Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina
spellingShingle Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina
Nami, Hugo G.
Geofísica
paleomagnetic studies
Holoceno
natural remanent magnetization
title_short Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina
title_full Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina
title_fullStr Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina
title_full_unstemmed Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina
title_sort Evidence of a possible reversion of the geomagnetic field registered during the late holocene in the province of Chubut, Argentina
dc.creator.none.fl_str_mv Nami, Hugo G.
Sinito, Ana M.
author Nami, Hugo G.
author_facet Nami, Hugo G.
Sinito, Ana M.
author_role author
author2 Sinito, Ana M.
author2_role author
dc.subject.none.fl_str_mv Geofísica
paleomagnetic studies
Holoceno
natural remanent magnetization
topic Geofísica
paleomagnetic studies
Holoceno
natural remanent magnetization
dc.description.none.fl_txt_mv Paleomagnetic studies were carried out on sediments sampled at an archaeological excavation sited on Angostura Blanca, Piedra Parada Valley, Province of Chubut (42°30'S, 69°42'W). The archaeological traces show the occupation of the site during the late holocene; this is confirmed by the C1 dating of sanóles obtained on the site (2140+50 years). The usual laboratory techniques for paleomagnetic studies were applied to isolate the directions of the stable remanent magnetization (measurements of natural remanent magnetization, demagnetization by increasing temperatures, measurements of residual remanent magnetization after each step of demagnetization). Using the isolated directions, which represent the directions of the geomagnetic field during the deposition and consolidation of the sediments, the virtual geomagnetic poles were obtained. The analysis of the results shows evidence of a possible record of a reversed polarity event on the studied sediments. This conclusion, if it is confirmed by other paleomagnetic data, would agree with the existence of the Etrussia excursion, recorded in Russia, on sediments of about 2700 years.
Material digitalizado en SEDICI gracias a la colaboración de la Facultad de Ciencias Astronómicas y Geofísicas (UNLP).
Asociación Argentina de Geofísicos y Geodestas
description Paleomagnetic studies were carried out on sediments sampled at an archaeological excavation sited on Angostura Blanca, Piedra Parada Valley, Province of Chubut (42°30'S, 69°42'W). The archaeological traces show the occupation of the site during the late holocene; this is confirmed by the C1 dating of sanóles obtained on the site (2140+50 years). The usual laboratory techniques for paleomagnetic studies were applied to isolate the directions of the stable remanent magnetization (measurements of natural remanent magnetization, demagnetization by increasing temperatures, measurements of residual remanent magnetization after each step of demagnetization). Using the isolated directions, which represent the directions of the geomagnetic field during the deposition and consolidation of the sediments, the virtual geomagnetic poles were obtained. The analysis of the results shows evidence of a possible record of a reversed polarity event on the studied sediments. This conclusion, if it is confirmed by other paleomagnetic data, would agree with the existence of the Etrussia excursion, recorded in Russia, on sediments of about 2700 years.
publishDate 1993
dc.date.none.fl_str_mv 1993
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/134385
url http://sedici.unlp.edu.ar/handle/10915/134385
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
19-26
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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