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Abstract:

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. © 2016. The Author(s).

Registro:

Documento: Artículo
Título:Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa
Autor:Nami, H.G.; De La Peña, P.; Vásquez, C.A.; Feathers, J.; Wurz, S.
Filiación:CONICET-IGEBA, Daniel A. Valencio Palaeomagnetism Laboratory, Department of Geological Sciences, University of Buenos Aires, Buenos Aires, Argentina
Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States
Evolutionary Studies Institute, School of Geosciences, University of the Witwatersrand, Johannesburg, South Africa
School of Geography, Archaeology and Environmental Sciences, University of the Witwatersrand, Johannesburg, South Africa
Ciclo Básico Común, University of Buenos Aires, Buenos Aires, Argentina
Luminescence Laboratory, University of Washington, Seattle, WA, United States
Palabras clave:Holocene; Klasies River main site; Late Pleistocene; Palaeomagnetism; Palaeosecular variation; geomagnetic field; Holocene; luminescence; magnetite; magnetization; Mesolithic; paleomagnetism; radiocarbon dating; secular variation; Cape Province; Eastern Cape; Klasies River; South Africa
Año:2016
Volumen:112
Número:11-12
DOI: http://dx.doi.org/10.17159/sajs.2016/20160051
Título revista:South African Journal of Science
Título revista abreviado:S. Afr. J. Sci.
ISSN:19967489
CODEN:SAJSA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19967489_v112_n11-12_p_Nami

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Citas:

---------- APA ----------
Nami, H.G., De La Peña, P., Vásquez, C.A., Feathers, J. & Wurz, S. (2016) . Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa. South African Journal of Science, 112(11-12).
http://dx.doi.org/10.17159/sajs.2016/20160051
---------- CHICAGO ----------
Nami, H.G., De La Peña, P., Vásquez, C.A., Feathers, J., Wurz, S. "Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa" . South African Journal of Science 112, no. 11-12 (2016).
http://dx.doi.org/10.17159/sajs.2016/20160051
---------- MLA ----------
Nami, H.G., De La Peña, P., Vásquez, C.A., Feathers, J., Wurz, S. "Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa" . South African Journal of Science, vol. 112, no. 11-12, 2016.
http://dx.doi.org/10.17159/sajs.2016/20160051
---------- VANCOUVER ----------
Nami, H.G., De La Peña, P., Vásquez, C.A., Feathers, J., Wurz, S. Palaeomagnetic results and new dates of sedimentary deposits from Klasies River Cave 1, South Africa. S. Afr. J. Sci. 2016;112(11-12).
http://dx.doi.org/10.17159/sajs.2016/20160051