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THE ASSESSMENT OF RADIONUCLIDE DISTRIBUTION IN SILEX BY AUTORADIOGRAPHY IN THE CONTEXT OF DOSE RATE DETERMINATION FOR THERMOLUMINESCENCE DATING
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
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2013 (English)In: Archaeometry, ISSN 0003-813X, E-ISSN 1475-4754, Vol. 55, 407-422 p.Article in journal (Refereed) Published
Abstract [en]

A combination of two autoradiography methods was applied to investigate the radionuclide distribution patterns in a range of different silices. We obtained greyscale images (-radiation) and -track patterns for qualitative assessment, and used a statistical approach to quantify the degree of uniformity of the radiation fields. It was found that almost all samples are poor in potassium, thorium and uranium, and that locally high concentrations are present only in dark-coloured veins and inclusions. Statistical analyses reveal evidence of radionuclide clustering in more than half of the 21 specimens. Concerning thermoluminescence dating of burnt lithics, such gradients should be taken into account to improve precision and accuracy in cases where the external radiation is not strongly dominating for the sample under consideration.

Place, publisher, year, edition, pages
2013. Vol. 55, 407-422 p.
Keyword [en]
FLINT, URANIUM, LUMINESCENCE, TL, DATING, DOSE RATE, MICRODOSIMETRY
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-89852DOI: 10.1111/j.1475-4754.2012.00690.xISI: 000317002600004OAI: oai:DiVA.org:su-89852DiVA: diva2:621483
Note

AuthorCount:5;

Available from: 2013-05-15 Created: 2013-05-14 Last updated: 2017-12-06Bibliographically approved

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