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Testing optically stimulated luminescence dating on sand-sized quartz of deltaic deposits from the Sperchios delta plain, central Greece

查看全文 作　　者：Evangelos [1,2,3]Tsakalos;Elias [1]Dimitriou;Maria [2]Kazantzaki;Christos [4]Anagnostou;John [2,5]Christodoulakis;Eleni [2]Filippaki 高影响力作者 机构地区：[1]Hellenic Centre for Marine Research, Institute of Inland Waters;[2]Laboratory of Archaeometry, Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research, N.C.S.R. 'Demokritos';[3]Department of Geophysics, Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University;[4]Hellenic Centre of Marine Research, Institute of Oceanography;[5]Climate Research Group, Division of Environmental Physics and Meteorology, Faculty of Physics, National and Kapodistrian University of Athens高影响力机构 出　　处：《Journal of Palaeogeography》索引2018年第7卷第2期,共16页高影响力期刊 基　　金：supported by the Greek General Secretariat of Research and Technology through ESPA-KRIPIS Project: 'Development of an integrated management framework of river basins and associated coastal and marine zone' 摘　　要：This study reports on the first investigation into the potential of luminescence dating to establish a chronological framework for the depositional sequences of the Sperchios delta plain, central Greece. A series of three borehole cores(20 m deep) and two shallow cores(4 m deep), from across the delta plain, were extracted, and samples were collected for luminescence dating. The luminescence ages of sand-sized quartz grains were obtained from small aliquots of quartz, using the Single-Aliquot Regenerative-dose(SAR) protocol.The equivalent dose determination included a series of tests and the selection of the Minimum Age Model(MAM) as the most appropriate statistical model. This made it possible to confirm the applicability of quartz Optically Stimulated Luminescence(OSL) dating to establish absolute chronology for deltaic sediments from the Sperchios delta plain.Testing age results of the five cores showed that the deltaic sediments were deposited during the Holocene.A relatively rapid deposition is implied for the top ~14 m possibly as a result of the deceleration in the rate of the sea-level rise and the transition to terrestrial conditions, while on the deeper parts, the reduced sedimentation rate may indicate a lagoonal or coastal environment. 关 键 词：Luminescence DATING HOLOCENE SEDIMENTATION rates DELTAIC DEPOSITS Sperchios delta plain Central Greece
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