Variations in quartz OSL components with lithology,weathering and transportation |
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| Institution: | 1. Department of Earth and Environmental Sciences, Andong National University, Andong 760-749, Republic of Korea;2. Division of Earth and Environmental Sciences, Korea Basic Science Institute, Chungbuk 363-883, Republic of Korea;3. Department of Isotope Geochemistry, University of Science and Technology, Daejeon 305-350, Republic of Korea;1. Institute of Physics – Center for Science and Education Konarskiego 22B str., 44-100 Gliwice, Poland;2. Institute of Geography and Regional Development, University of Wroclaw, 50-137 Wroclaw, Poland;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. Korea Institute of Geoscience and Mineral Resources, 124 Gwahang-no, Yuseong-gu, Daejeon 305-350, Republic of Korea;2. Korea Basic Science Institute, Chungbuk 363-883, Republic of Korea;3. Kangwon National University, Chuncheon 200-701, Republic of Korea;4. Korea International Cooperation Agency, Gyeonggi, Republic of Korea;1. Department of Earth Sciences, ETH, 8092 Zurich, Switzerland;2. Center for Nuclear Technologies, Technical University of Denmark, DTU – Risø Campus, Roskilde, Denmark;3. Netherlands Centre for Luminescence Dating, Soil Geography and Landscape Group, Wageningen University, Wageningen, The Netherlands;4. Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, 2629JB Delft, The Netherlands;5. Nordic Laboratory for Luminescence Dating, Department of Geoscience, Aarhus University, DTU Risø Campus, Denmark;6. Geological Survey of Norway, POB 6315 Sluppen, 7491 Trondheim, Norway;7. Natural History Museum of London, Cromwell Road, London SW7 5BD, UK;8. Institute of Geological Sciences, University of Bern, Baltzerstrasse 1+3, 3012 Bern, Switzerland;9. Department of Physical Geography and Quaternary Geology, Stockholm University, 10691 Stockholm, Sweden;10. Department of Earth, Planetary, and Space Sciences, UCLA, Los Angeles, CA 90095-1567, USA;11. Department of Geosciences, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan;12. Department of Earth Sciences, Indian Institute of Technology, Bombay, Powai 400 076, India;13. Institute of Earth Surface Dynamics, University of Lausanne, Geopolis 3232, 1015 Lausanne, Switzerland;1. Research Laboratory for Archaeology and the History of Art, University of Oxford, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, UK;2. IRAMAT-CRP2A, UMR 5060 CNRS – Université Bordeaux Montaigne – Maison de l''archéologie, Esplanade des Antilles, 33600 Pessac, France;3. Illinois State Geological Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, USA;4. Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany;5. French National Institute for Preventive Archaeological Research, INRAP, 141 rue d’Alésia, Paris, France;6. School of Geography Archaeology and Environmental Studies, University of the Witwatersrand, Private Bag 3, Wits 2050, Johannesburg, South Africa;7. Département de Préhistoire, Muséum National d''Histoire Naturelle, UMR 7194 CNRS, 24620 Les Eyzies-de-Tayac, France;8. Department of Anthropology, University of Pennsylvania, Philadelphia, USA;9. Institute for Human Origins, Arizona State University, USA;10. Institute for Archaeological Sciences, University of Tübingen, Rümelinstr. 23, 72070 Tübingen, Germany;11. School of Earth and Environmental Sciences, University of Wollongong, Northfields Avenue, Wollongong, NSW 2522, Australia;12. Musée National de Préhistoire, F-24620 Les Eyzies-de-Tayac, France;13. CNRS, Université de Bordeaux, MCC, PACEA, UMR 5199, F-33400 Talence, France;14. Human Evolution Studies Program and Department of Archaeology, Simon Fraser University, Burnaby, Canada;15. University of California, Davis, USA;1. Centre for Archaeological Science, School of Earth and Environmental Sciences, University of Wollongong, Wollongong, NSW 2522, Australia;2. Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China |
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| Abstract: | The signal properties of quartz optically stimulated luminescence (OSL) vary from sample to sample, and even from grain to grain, in terms of, for example, signal intensity or the composition of OSL signal components. However, the cause of the variation in quartz OSL properties is not well understood. Here, we report our experimental observations of continuous wave and linearly modulated OSL signals in quartz grains from fresh bedrocks, saprolites, and sediments in Korea. The OSL signals in quartz grains from both fresh bedrocks and saprolites in the granitic and metamorphic rocks are dominated by slower OSL components, with no fast OSL component. By contrast, the OSL signals in quartz extracts from sandstones are predominantly composed of fast OSL components. Quartz extracts derived from thermally metamorphosed or diagenetically recrystallised sandstones, however, tend to emit weaker OSL signals, a property related to intense slower OSL components. Along the fluvial transportation path, slower OSL components dominate near the host granite, but their absolute/relative intensity decreases with a simultaneous increase in the fast OSL component with transportation distance. OSL signal characteristics suitable for dating appear to be acquired during sedimentary processes after the liberation of quartz grains from granitic and metamorphic bedrock. Therefore, granitic and metamorphic quartz grains should be transported a sufficient distance for the fast OSL component to be sensitised. However, unless they have been affected by post-thermal metamorphism and recrystallisation, the OSL signal properties of quartz grains released from Cretaceous sedimentary rocks seem to be suitable for OSL dating, regardless of the transportation distance. |
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