Comparison of SAR techniques for luminescence dating of sediments derived from volcanic tuff |
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| Institution: | 1. Environmental Dynamics Group, Luminescence Geochronology Lab, Los Alamos National Laboratory, EES-2 MS J495, Los Alamos, NM 87545 USA;2. Environmental Geology & Risk Analysis Group, Los Alamos National Laboratory, EES-9 MS D462, Los Alamos, NM 87545 USA;1. Department of Pediatrics, Severance Hospital, Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea;2. Department of Internal Medicine, Severance Hospital, Institute of Allergy, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea;1. Key Laboratory of Space Utilization, Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing, 100094, China;2. Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, 100094, China;1. Faculty of Earth Sciences, University of Iceland, 101 Reykjavík, Iceland;2. Institute for Geography, Universität zu Köln, 50923 Köln, Germany;3. Institute of Earth and Environmental Science, Universität Potsdam, 14476 Potsdam-Golm, Germany;4. The Dead Sea and Arava Science Center, Tamar Regional Council, Dead-Sea Mobile Post 86910, Israel;5. Department of Geology, The University of Jordan, 11942 Amman, Jordan;1. Key Laboratory of Computational Geodynamics, College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China;2. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China;3. Research School of Earth Sciences, Australian National University, Canberra, ACT, 0200, Australia;4. Key Laboratory of Cenozoic Geology and Environment, Chinese Academy of Sciences, Beijing, 100029, China;5. Nihewan National Reserve, Zhangjiakou, 075000, Hebei Province, China;6. State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China;7. Institutions of Earth Science, Chinese Academy of Sciences, Beijing, 100029, China;8. College of History and Culture, Hebei Normal University, Shijiazhuang, 050024, China;9. Administration of Tourism, Culture, Radio, Television, Press and Publication, Yangyuan, 075800, China;1. Unidad de Vigilancia Epidemiológica, Delegación Territorial de Salud de Bizkaia, Bilbao, España;2. Servicio de Neumología, Hospital Universitario de Cruces, Barakaldo, España;3. Servicio de Neumología, Hospital de Santa Marina, Bilbao, España;4. Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, España |
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| Abstract: | In this investigation we evaluate several proposed optically stimulated luminescence single-aliquot regeneration (OSL SAR) procedures to determine which technique has the greatest potential to yield accurate ages for samples collected from tuff-derived alluvial sediments within the narrow, sharply incised canyon systems of the Pajarito Plateau of northern New Mexico. The SAR data collection methods evaluated are: infrared-stimulated luminescence (IRSL), post-IR blue-OSL, IRSL with TL annealing cycles on polymineral fine-grains, and blue-OSL on quartz fine sand. A single-grain laser luminescence (SGLL) procedure for quartz sand is also evaluated. Age estimates obtained from these methods are compared with radiocarbon, soil PDI (profile development index), and IRSL multi-aliquot additive dose (MAAD) age constraints. Our results indicate that the modal De of quartz sand SGLL dose distributions yield ages that are consistent with radiocarbon and PDI age constraints for the tuff derived sediments in this investigation and appears to be the most promising method for studies in this area. Additionally, two fine-grained polymineral methods, IRSL SAR and traditional IRSL MAAD, produced ages that were generally in agreement with the SGLL ages and with available 14C and PDI age constraints. At the present stage of research, we advocate using quartz sand SGLL in conjunction with IRSL SAR or even IRSL MAAD for polymineral fine-grains to provide the most robust and reliable luminescence age data sets for tuff-derived sediments. |
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