Luminescence dating of quartz using an improved single-aliquot regenerative-dose protocol |
| |
| Institution: | 1. The Nordic Laboratory for Luminescence Dating, Department of Earth Sciences, University of Aarhus, Risø National Laboratory, DK-4000 Roskilde, Denmark;2. Institute of Geography and Earth Sciences, University of Wales, Aberystwyth SY23 3DB, UK;1. Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, Risø Campus, DK-4000 Roskilde, Denmark;2. Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, DK-4000 Roskilde, Denmark;1. Soil Geography and Landscape Group & Netherlands Centre for Luminescence Dating, Wageningen University, 6708 PB Wageningen, The Netherlands;2. Department of Earth Sciences, ETH-Zurich, 8092 Zurich, Switzerland;3. Geological Survey of Israel, 30 Malkhe Israel St., 95501 Jerusalem, Israel;4. Davidson Institute of Science Education, Weizmann Institute of Science, 76100 Rehovot, Israel;5. Centre for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, 4000 Roskilde, Denmark;1. Centre for Archaeological Science, School of Earth and Environmental Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia;2. GeoQuEST Research Centre, School of Earth and Environmental Sciences, University of Wollongong, Wollongong, NSW 2522, Australia;3. ARC Centre of Excellence for Australian Biodiversity and Heritage, University of Wollongong, Wollongong, NSW 2522, Australia;4. Department of Environmental Sciences, Macquarie University, North Ryde, NSW 2109, Australia;1. Applied Nuclear Techniques in Geosciences Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu, 610059, China;2. Sichuan Management & Monitoring Center Station of Radioactive Environment, Chengdu, 610031, China |
| |
| Abstract: | Single aliquot protocols are now widely used as a means of measuring the equivalent dose (De) in quartz and feldspar optical stimulated luminescence (OSL) dating of both heated and sedimentary materials. The most recent of these is the single-aliquot regenerative-dose (SAR) protocol, first suggested by Murray and Roberts (Radiation Measurements 29, 503–515, 1998). In this approach, each natural or regenerated dose OSL measurement is corrected for changes in sensitivity using the OSL response to a subsequent test dose (10–20% of De). If the sensitivity correction is adequate, then the corrected OSL response should be independent of prior dose and thermal/optical treatment, i.e. there should be no change in the sensitivity-corrected dose–response curve on remeasurement. Here we examine the interpretation of the sensitivity corrected growth curve as a function of dose, and the effect of changing measurement conditions (e.g. preheat temperature, size of test dose, stimulation temperature) on the estimation of De. The dependence of the dose response on prior treatment is tested explicitly, and the significance of thermal transfer discussed. It is concluded that a robust SAR protocol is now available for quartz, and that it is applicable to a wide range of heated and unheated materials. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
