The climate change during early Holocene recorded by trace elements of Shenmu section,Mu Us Desert |
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| Authors: | Haibo Liu Baosheng Li Chunhong Zheng Yuejun Si Xiaohao Wen Dongfeng Niu Shuhuan Du Peixian Shu |
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| Institution: | 1.School of Geography,South China Normal University,Guangzhou,China;2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment,Chinese Academy of Sciences,Xi’an,China;3.School of Geography and Planning,Guangxi Teachers Education University,Nanning, Guangxi,China;4.Lingnan Normal University,Zhanjiang,China;5.Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanlolgy,Chinese Academy of Sciences,Guangzhou,China;6.Institute of Earth Environment,Chinese Academy of Sciences,Xi’an,China |
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| Abstract: | Through nine trace elements of the Shenmu section, Mu Us Desert is analyzed for the climate changes during Early Holocene. Except Sr, a migration process of P, Mn, Cr, Rb, Nb, Cu, Zn, and V is found in the dune sands, indicating the accumulation processes of the Asian winter monsoon-driven wind erosion and transport and deposition under the cold climatic phase. And accumulation of these elements in different layers of paleo sol dune sands is related to regional geomorphology and element properties. 8.5 winter-summer monsoon cycles in the early Holocene are observed. The duration time and climate of the stronger winter monsoon phases can be compared with the cold climate in the North Atlantic and other parts of China. The result of Red fit 3.8 power spectra shows 310a, 210a, 90a, and 70a centennial cycles for the element, which are consistent with the solar oscillation cycles. These suggest that the external solar activities of the Earth may have great influences on driving the winter and summer monsoon cycles during early Holocene. |
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