Assessing mixed dose distributions in young sediments identified using small aliquots and a simple two-step SAR procedure: the F-statistic as a diagnostic tool

Constraining the age and formation of stone runs in the Falkland Islands using Optically Stimulated Luminescence

“…The use of regenerative procedures for determining the stored dose within single aliquots or mineral grains Sommerville et al, 2001Sommerville et al, , 2003 allows use of dose-distributional analysis within sediments as a means of diagnosing heterogeneous systems incorporating materials of varying age (e.g. Olley et al, 1998Olley et al, , 1999Lepper et al, 2000;Duller et al, 2000;Spencer et al, 2003). There is also information in the decay shapes of OSL stimulation curves which can be used to assess the extent to which natural signals match those generated by single-cycle irradiation in the laboratory (e.g.…”

Thermoluminescence screening of non‐diagnostic sherds from stream sediments to obtain a preliminary alluvial chronology: An example from Cyprus

“…In the future, more precise dose rates could be estimated through chemical analysis of the uranium, thorium, and potassium content of sherds, with the use of methods such as Inductively Coupled Plasma Mass Spectrometry (ICP-MS) or X-ray fluorescence (XRF), and through microscopic identification of the dated minerals. However, in an attempt to gain a more accurate and precise understanding of the Cypriot fluvial chronology, it is also noted that optically stimulated luminescence (OSL) dating of selected sediment samples can, under favorable circumstances, provide direct constraints on depositional ages, and thus permit a more detailed analysis of the relationships between artifact age and depositional age for fluvial units (Deckers, 2002;Spencer et al, 2003).…”

Luminescence dating of anthropogenically reset canal sediments from Angkor Borei, Mekong Delta, Cambodia

“…Fig. 5 shows the small aliquot dose distributions, and associated Fplots from these two samples (Spencer et al, 2003). The qualitative differences between the two samples are immediately apparent.…”

“…Thereafter the nine dating tube samples were subjected to quartz single-aliquot-regenerative OSL measurements to assess ages where possible. Two of these samples (OSL1 and OSL7) were subjected to additional small aliquot dose distributional analysis (Spencer et al, 2003) to investigate bleaching and mixing properties in further detail. Finally, some experiments have been conducted to assess the possibility that separated feldspar samples may potentially experience more complete bleaching than quartz under turbid aquatic conditions.…”

“…Samples OSL1 and OSL7 were additionally subjected to small-aliquot dose determination, using 96 aliquots per sample, and a simplified SAR regime (Spencer et al, 2003). Linear equivalent doses were estimated following test-dose normalisation and calibration at a single regeneration point, and used to evaluate the extent of homogeneity of the dose distribution for basal and upper canal samples.…”