The use of single grain aliquots is difficult when the exposure to sunlight is unequal from grain to grain e. This site uses Akismet to reduce spam. Various approaches for testing the completeness of bleaching have been adopted in the past. OSL ages show a good agreement with independent 14C ages from several core sediments up to last 27 ka, and were used to further extend the dating range to OIS 5. In a pit, samples should be taken from an homogeneous layer more than cm thick, away from coarse deposits, which may complicate the dose rate calculation. The dating of raised beaches Balescu et al; Regnault et al; Coutard et al. Equivalent dose and age determination on samples younger than a.
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Optically stimulated luminescence
This site uses Akismet to reduce spam. Quaternary International Research over the last decade Duller, ; Mejdahl and Better- Jensen, ; Wintle and Murray, ; Murray and Wintle ; Murray and Roberts, have helped overcome this problem of sensitivity change, thereby allowing the possibility of repeated measurement on the same aliquot and even the same grain. Balescu and Tuffreau in Bahain et al.