Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa

Autores
Nami, Hugo Gabriel; De La Peña, Paloma; Vasquez, Carlos Alberto; Feathers, James; Wurz, Sarah
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Palaeomagnetic data from Klasies River main site Cave 1 (Eastern Cape Province, South Africa) are reported. Natural remanent magnetisation directions obtained from 77 oriented samples were determined by progressive alternating field demagnetisation methodology. Three palaeomagnetic samplings from the Witness Baulk from the Middle Stone Age (MSA) Late Pleistocene White Sand member and the Holocene Later Stone Age (LSA) middens in Cave 1 were dated and analysed to obtain the palaeomagnetic directions recorded in the sediments. Here we provide new optically stimulated luminescence (OSL) dates for the White Sand Member, and new accelerator mass spectrometry (AMS) radiocarbon dates for the LSA midden of areas not previously dated. The palaeomagnetic analysis took into account rock magnetism and directional analysis. The former reveals that the main magnetic carrier was magnetite; the latter shows that characteristic remanent magnetisation of normal and anomalous directions were observed in the lower portion of the White Sand Member and LSA midden. Normal directions correspond to the palaeosecular variation record for South Africa during the Late Pleistocene. On the other hand, the anomalous directions recorded in the LSA midden might represent the likely Sterno-Etrussia geomagnetic field excursion which occurred during the Late Holocene and is observed in other places on the planet. Finally, the directional data obtained are a potential tool for discussing the age of deposits corresponding to those periods. Significance: • New dates confirm and extend previous age determinations for the LSA and White Sand Member from Klasies River.
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; Argentina. Smithsonian Institution; Estados Unidos
Fil: De La Peña, Paloma. University of the Witwatersrand; Sudáfrica
Fil: Vasquez, Carlos Alberto. 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: Feathers, James. University of Washington; Estados Unidos
Fil: Wurz, Sarah. University of the Witwatersrand; Sudáfrica
Materia
HOLOCENE
KLASIES RIVER MAIN SITE
LATE PLEISTOCENE
PALAEOMAGNETISM
PALAEOSECULAR VARIATION
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:11336/66314
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/66314
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South AfricaNami, Hugo GabrielDe La Peña, PalomaVasquez, Carlos AlbertoFeathers, JamesWurz, SarahHOLOCENEKLASIES RIVER MAIN SITELATE PLEISTOCENEPALAEOMAGNETISMPALAEOSECULAR VARIATIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Palaeomagnetic data from Klasies River main site Cave 1 (Eastern Cape Province, South Africa) are reported. Natural remanent magnetisation directions obtained from 77 oriented samples were determined by progressive alternating field demagnetisation methodology. Three palaeomagnetic samplings from the Witness Baulk from the Middle Stone Age (MSA) Late Pleistocene White Sand member and the Holocene Later Stone Age (LSA) middens in Cave 1 were dated and analysed to obtain the palaeomagnetic directions recorded in the sediments. Here we provide new optically stimulated luminescence (OSL) dates for the White Sand Member, and new accelerator mass spectrometry (AMS) radiocarbon dates for the LSA midden of areas not previously dated. The palaeomagnetic analysis took into account rock magnetism and directional analysis. The former reveals that the main magnetic carrier was magnetite; the latter shows that characteristic remanent magnetisation of normal and anomalous directions were observed in the lower portion of the White Sand Member and LSA midden. Normal directions correspond to the palaeosecular variation record for South Africa during the Late Pleistocene. On the other hand, the anomalous directions recorded in the LSA midden might represent the likely Sterno-Etrussia geomagnetic field excursion which occurred during the Late Holocene and is observed in other places on the planet. Finally, the directional data obtained are a potential tool for discussing the age of deposits corresponding to those periods. Significance: • New dates confirm and extend previous age determinations for the LSA and White Sand Member from Klasies River.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; Argentina. Smithsonian Institution; Estados UnidosFil: De La Peña, Paloma. University of the Witwatersrand; SudáfricaFil: Vasquez, Carlos Alberto. 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: Feathers, James. University of Washington; Estados UnidosFil: Wurz, Sarah. University of the Witwatersrand; SudáfricaAcademy of Science of South Africa2016-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/66314Nami, Hugo Gabriel; De La Peña, Paloma; Vasquez, Carlos Alberto; Feathers, James; Wurz, Sarah; Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa; Academy of Science of South Africa; South African Journal of Science; 112; 11-12; 11-2016; 1-121996-7489CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.17159/sajs.2016/20160051info:eu-repo/semantics/altIdentifier/url/https://www.sajs.co.za/article/view/3680info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:51:34Zoai:ri.conicet.gov.ar:11336/66314instacron: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 09:51:34.693CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
title Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
spellingShingle Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
Nami, Hugo Gabriel
HOLOCENE
KLASIES RIVER MAIN SITE
LATE PLEISTOCENE
PALAEOMAGNETISM
PALAEOSECULAR VARIATION
title_short Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
title_full Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
title_fullStr Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
title_full_unstemmed Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
title_sort Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
dc.creator.none.fl_str_mv Nami, Hugo Gabriel
De La Peña, Paloma
Vasquez, Carlos Alberto
Feathers, James
Wurz, Sarah
author Nami, Hugo Gabriel
author_facet Nami, Hugo Gabriel
De La Peña, Paloma
Vasquez, Carlos Alberto
Feathers, James
Wurz, Sarah
author_role author
author2 De La Peña, Paloma
Vasquez, Carlos Alberto
Feathers, James
Wurz, Sarah
author2_role author
author
author
author
dc.subject.none.fl_str_mv HOLOCENE
KLASIES RIVER MAIN SITE
LATE PLEISTOCENE
PALAEOMAGNETISM
PALAEOSECULAR VARIATION
topic HOLOCENE
KLASIES RIVER MAIN SITE
LATE PLEISTOCENE
PALAEOMAGNETISM
PALAEOSECULAR VARIATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Palaeomagnetic data from Klasies River main site Cave 1 (Eastern Cape Province, South Africa) are reported. Natural remanent magnetisation directions obtained from 77 oriented samples were determined by progressive alternating field demagnetisation methodology. Three palaeomagnetic samplings from the Witness Baulk from the Middle Stone Age (MSA) Late Pleistocene White Sand member and the Holocene Later Stone Age (LSA) middens in Cave 1 were dated and analysed to obtain the palaeomagnetic directions recorded in the sediments. Here we provide new optically stimulated luminescence (OSL) dates for the White Sand Member, and new accelerator mass spectrometry (AMS) radiocarbon dates for the LSA midden of areas not previously dated. The palaeomagnetic analysis took into account rock magnetism and directional analysis. The former reveals that the main magnetic carrier was magnetite; the latter shows that characteristic remanent magnetisation of normal and anomalous directions were observed in the lower portion of the White Sand Member and LSA midden. Normal directions correspond to the palaeosecular variation record for South Africa during the Late Pleistocene. On the other hand, the anomalous directions recorded in the LSA midden might represent the likely Sterno-Etrussia geomagnetic field excursion which occurred during the Late Holocene and is observed in other places on the planet. Finally, the directional data obtained are a potential tool for discussing the age of deposits corresponding to those periods. Significance: • New dates confirm and extend previous age determinations for the LSA and White Sand Member from Klasies River.
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; Argentina. Smithsonian Institution; Estados Unidos
Fil: De La Peña, Paloma. University of the Witwatersrand; Sudáfrica
Fil: Vasquez, Carlos Alberto. 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: Feathers, James. University of Washington; Estados Unidos
Fil: Wurz, Sarah. University of the Witwatersrand; Sudáfrica
description Palaeomagnetic data from Klasies River main site Cave 1 (Eastern Cape Province, South Africa) are reported. Natural remanent magnetisation directions obtained from 77 oriented samples were determined by progressive alternating field demagnetisation methodology. Three palaeomagnetic samplings from the Witness Baulk from the Middle Stone Age (MSA) Late Pleistocene White Sand member and the Holocene Later Stone Age (LSA) middens in Cave 1 were dated and analysed to obtain the palaeomagnetic directions recorded in the sediments. Here we provide new optically stimulated luminescence (OSL) dates for the White Sand Member, and new accelerator mass spectrometry (AMS) radiocarbon dates for the LSA midden of areas not previously dated. The palaeomagnetic analysis took into account rock magnetism and directional analysis. The former reveals that the main magnetic carrier was magnetite; the latter shows that characteristic remanent magnetisation of normal and anomalous directions were observed in the lower portion of the White Sand Member and LSA midden. Normal directions correspond to the palaeosecular variation record for South Africa during the Late Pleistocene. On the other hand, the anomalous directions recorded in the LSA midden might represent the likely Sterno-Etrussia geomagnetic field excursion which occurred during the Late Holocene and is observed in other places on the planet. Finally, the directional data obtained are a potential tool for discussing the age of deposits corresponding to those periods. Significance: • New dates confirm and extend previous age determinations for the LSA and White Sand Member from Klasies River.
publishDate 2016
dc.date.none.fl_str_mv 2016-11
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/11336/66314
Nami, Hugo Gabriel; De La Peña, Paloma; Vasquez, Carlos Alberto; Feathers, James; Wurz, Sarah; Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa; Academy of Science of South Africa; South African Journal of Science; 112; 11-12; 11-2016; 1-12
1996-7489
CONICET Digital
CONICET
url http://hdl.handle.net/11336/66314
identifier_str_mv Nami, Hugo Gabriel; De La Peña, Paloma; Vasquez, Carlos Alberto; Feathers, James; Wurz, Sarah; Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa; Academy of Science of South Africa; South African Journal of Science; 112; 11-12; 11-2016; 1-12
1996-7489
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.17159/sajs.2016/20160051
info:eu-repo/semantics/altIdentifier/url/https://www.sajs.co.za/article/view/3680
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 Academy of Science of South Africa
publisher.none.fl_str_mv Academy of Science of South Africa
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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score 13.13397

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