However, despite the energy storage mechanism being the same for a given mineral, the sensitivity to radiation may vary greatly between samples, an aspect that has important implications for dating procedures as will be shown later. As in other countries, the first dating of sediments was based on thermoluminescence Wintle et al. Naton H. Supplement Band Geological materials that have undergone heating to high temperatures at any point during the last aboutyears should also be datable using TL methods if they contain appropriate dosimeters.
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Both the additive dose and regenerative dose methods employed multiple aliquots when they were originally developed for TL dating.
Water actually absorbs part of the radiation, hence modifying the dose rate and the age estimate of the sample: URL http: Situations exist, however, where quartz grains may contain very low levels of uranium but these are rare [ 51 ]. Normandy and Brittany. That separation is usually aided by the use of optical filters. 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.