مؤسسه ژئوفیزیک دانشگاه تهران فیزیک زمین و فضا 2538-371X 41 4 2015 12 22 Optical dating of Holocene lake bed sediments of the Nimbluk Plain, Khorasan, Northeast Iran: Implications for the climate change and palaeo-environment Optical dating of Holocene lake bed sediments of the Nimbluk Plain, Khorasan, Northeast Iran: Implications for the climate change and palaeo-environment 1 12 57222 10.22059/jesphys.2015.57222 FA Morteza Fattahi Associate Professor, Department of Earth Physics, Institute of Geophysics, University of Tehran, Iran 0000-0003-2719-5859 Richard Walker Department of Earth Sciences, University of Oxford, Parks Road, England Journal Article 2016 01 17 We have investigated an optically stimulated luminescence (OSL) dating study in the Nimbluk lakebed in Khorasan, northeast Iran. Two samples of the lake-bed sediments from ~1 m below the land surface are successfully dated at 7.3-9.9 ka. All necessary experiments have been performed to choose the most suitable procedure for dating quartz extracts using single aliquot regeneration method (SAR). We have employed weighted histogram, unweighted histogram and central age model (CAM) for equivalent dose determination. Although, these results of the ages do not allow us to determine the timing of desiccation, the results suggest that the early part of the Holocene was much wetter than today. This provides valuable palaeo-environmental data in the region. We have investigated an optically stimulated luminescence (OSL) dating study in the Nimbluk lakebed in Khorasan, northeast Iran. Two samples of the lake-bed sediments from ~1 m below the land surface are successfully dated at 7.3-9.9 ka. All necessary experiments have been performed to choose the most suitable procedure for dating quartz extracts using single aliquot regeneration method (SAR). We have employed weighted histogram, unweighted histogram and central age model (CAM) for equivalent dose determination. Although, these results of the ages do not allow us to determine the timing of desiccation, the results suggest that the early part of the Holocene was much wetter than today. This provides valuable palaeo-environmental data in the region. https://jesphys.ut.ac.ir/article_57222_149f138a655015a15b8f47bdbe7f3bc0.pdf