Multiple and single aliquot luminescence dating techniques applied to quartz extracted from Middle and Upper Weichselian loess, Zemechy, Czech Republic
✍ Scribed by A. Zander; G. A. T. Duller; A. G. Wintle
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 153 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0267-8179
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✦ Synopsis
This paper reports the application of optically stimulated luminescence (OSL) dating to relatively coarse grains (100-200 m) of quartz extracted from loess. Two approaches were tested -a multiple aliquot technique and a new single aliquot approach, which is especially suited to the dating of small quantities of such grains found in some loess. The results are compared with infra-red stimulated luminescence and thermoluminescence (TL) measurements on the finer-grained (4-11 m) polymineral fraction and TL measurements on the relatively coarse grains of quartz.
The advantages of the new single aliquot (OSL) approach are described and the iterating, computer-controlled measurement procedure is given. The automated iterative single aliquot regeneration (AISAR) method corrects for changes in luminescence sensitivity during the measurement sequence by monitoring the response to a test dose. Some initial measurements are presented for the loess section at Zemechy, Czech Republic, and these show that the AISAR method gives more precise results than those using a multiple aliquot method.