2010年烟台沙漠学术研讨会论文选 |
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Optically Stimulated Luminescence Dating and Sedimentary Characteristicsof Loess Section at Penglai in Shandong Province |
XU Shu-jian1,2, WANG Tao1 |
1.Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2.The Key Laboratory of Soil Conservation and Environmental Protection in Shandong Province; School of Chemistry and Resources Environment, Linyi University, Linyi 276000, Shandong, China |
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Abstract Chinese loess-paleosol sequence has provided detailed terrestrial records of climate change during the Quaternary. Field work was carried out systematically on one loess section at Lingezhuang of Penglai in northern Shandong Peninsula, and optically stimulated luminescence(OSL )dating, grain size and magnetic susceptibility measuring were conducted. The results show that there are three types of grain size frequency curves, and environment-sensitive size fractions of this section are 22.39~25.12 μm and 56.23~63.10 μm. Changes of magnetic susceptibility and percentage of the different size fraction are correlated, and there is a negative correlation between frequency magnetic susceptibility and coarse particle contents. The section is divided into three loess layers and three paleosol layers, which record the information of climatic change and environmental evolution over the last interglacial stage.
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Received: 03 August 2010
Published: 20 March 2011
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