Testing the application of post IR IRSL dating to Iron- and Viking-age ceramics and heated stones from Denmark |
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| Institution: | 1. Nordic Laboratory for Luminescence Dating, Department of Geoscience, Risø Campus, Aarhus University, Denmark;2. Institute for Ancient Near Eastern Archaeology, Free University Berlin, Germany;3. Centre for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, Denmark;4. Department of Science, Systems and Models, Roskilde University, Denmark;1. Institute of Geography, University of Cologne, Albertus-Magnus-Platz, 50923 Cologne, Germany;2. Commission for Archaeology of Non-European Cultures (KAAK), Dürenstr. 35-37, 53173 Bonn, Germany;3. Neanderthal Museum, Talstraße 300, 40822 Mettmann, Germany;4. Institut National des Sciences de l''Archéologie et du Patrimoine (INSAP), 1, Rue Ghandi, Rabat, Morocco;1. GeoQuest and Wollongong Isotope Geochronology Lab, School of Earth and Environmental Sciences, University of Wollongong, Australia;2. Department of Physical Geography and Quaternary Geology, Stockholm University, 10691, Stockholm, Sweden;1. State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;2. Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China;1. Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, DTU Risø Campus, Roskilde 4000, Denmark;2. Center for Nuclear Technologies, Technical University of Denmark, DTU Risø Campus, Roskilde 4000, Denmark;3. Geological Survey of Israel, 30 Malkhe Israel Street, Jerusalem 95501, Israel;4. Dead Sea-Arava Science Center, Patio 655, Eilat 88133, Israel;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 |
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| Abstract: | In this study we test, for the first time, the potential of an elevated temperature post-IR IR (pIRIR290) SAR protocol for the dating of young heated artefacts. Seven heated stones and seven potshards were collected from three different archaeological sites in Denmark: one site from the early Pre-Roman Iron Age 200 BC to AD 100, and two from the Viking period between AD 800 and 1200.We first derive quartz OSL ages for these samples, to support the archaeological age control. The luminescence characteristics of the pIRIR290 signal are then investigated; in particular the dose recovery ratios are shown to be close to unity. The performance of the feldspar pIRIR290 protocol is then examined by comparing the pIRIR290 ages with those based on the quartz OSL signal; the average ratio of pIRIR290 to OSL ages is 1.14 ± 0.05 (n = 14) and there is some suggestion that the possible overestimation of the feldspar ages compared to quartz is only of significance for the heated stone samples. Nevertheless, there is no indication of incomplete heating of the stones; the ratios of De derived from the IR50 and pIRIR290 signals are independent of sample type, and consistent with complete resetting by heating. Comparison with the archaeological age control is not able to identify whether quartz or feldspar provides the most reliable dating signal. |
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| Keywords: | Iron age Viking age Ceramic Heated stone Denmark Optically stimulated luminescence(OSL) Post IR IRSL |
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