Title: Identification of well-bleached grains in the optical dating of quartz
Abstract: A simple means of identifying poorly bleached samples is proposed for the dating of quartz using the single-aliquot additive-dose optically stimulated luminescence (OSL) protocol. For a well-bleached sample, it is shown that the equivalent dose (De) does not change with the ratio of the natural OSL from a brief (0.1 s) stimulation to the 110°C thermoluminescence from a subsequent small test dose. In contrast, in a poorly bleached sample, the De increases strongly at higher values of the ratio. These observations suggest that this ratio can be used as an indicator of whether or not a sample is well bleached. The OSL/TL ratio is also likely to be sensitive to such factors as thermal history and feldspar contamination.
Publication Year: 2001
Publication Date: 2001-06-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 38
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