The interpretation of quartz optically stimulated luminescence equivalent dose versus time plots |
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| Institution: | 1. Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, Risø Campus, Denmark;2. Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, Denmark;1. Hungarian Academy of Sciences (MTA), Research Centre for Astronomy and Earth Sciences, Institute for Geological and Geochemical Research, Budaörsi út 45, 1112 Budapest, Hungary;2. Aix-Marseille University, CEREGE, CNRS-IRD UM34, BP 80, 13545 Aix-en-Provence Cedex 4, France;3. Department of Physical Geography, Eötvös University, Pázmány P. sétány 1/C, 1117, Budapest, Hungary;4. Geological and Geophysical Institute of Hungary, Stefánia út 14, 1143, Budapest, Hungary;5. MTA-ELTE Geological, Geophysical and Space Research Group of the Hungarian Academy of Sciences at Eötvös University, Pázmány P. sétány 1/C, 1117, Budapest, Hungary;6. Hungarian Academy of Sciences (MTA), Research Centre for Astronomy and Earth Sciences, Geographical Institute, Budaörsi út 45, 1112 Budapest, Hungary;1. Nordic Laboratory for Luminescence Dating, Department of Geosciences, University of Aarhus, Risø Campus, Denmark;2. Center for Nuclear Technologies, Technical University of Denmark, Risø Campus, Denmark;3. Leibniz Institute for Applied Geophysics, S3: Geochronology and Isotope Hydrology, Hannover, Germany;4. School of Geographical and Oceanographical Sciences, Nanjing University, China;5. Department of Earth Sciences, Uppsala University, Sweden;6. Geography, Earth and Environmental Sciences, University of Derby, UK;1. Department of Conservation and Management of Cultural Resources, Yarmouk University, Irbid, Jordan;2. Department of Geoscience, Aarhus University, DTU Risø Campus, Roskilde, DK, 4000, Denmark;3. Nordic Laboratory for Luminescence Dating, Department of Physics, Technical University of Denmark, DTU Risø Campus, Roskilde, DK, 4000, Denmark |
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| Abstract: | Numerical modelling has shown that the form of the quartz OSL shine plateau (hereafter ‘De(t)-plot’) is influenced by the effects of phototransferred TL in the ∼110°C region. It is suggested also that the presence of multiple OSL components (as described by Bailey, Smith and Rhodes, 1997. Partial bleaching and the decay form characteristics of quartz OSL. Radiat. Meas., 27, 123–136; Bailey, 1998. The form of the optically stimulated luminescence signal of quartz: implications of dating. Unpublished PhD thesis, University of London) affects the form of the De(t)-plot. Laboratory measurements of a fully reset and artificially dosed sample yielded non-flat De(t)-plots, the deviation being greater for the larger of the two simulated palaeodoses, in accordance with theoretical predictions. It is suggested that the so-called ‘shine plateau’ test is of limited use in assessing the bleaching history of quartz sediments. |
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