| Paleoclimate and Environment Evolution |
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| Holocene Millennial Scale Climate Variations from Records of Grain Size and CaCO3 in MGS1 Segment of Milanggouwan Section in the Salawusu River Valley, China |
| WANG Feng-nian1, LI Bao-sheng1,2, NIU Dong-feng1, LI Zhi-wen3, WEN Xiao-hao1, SI Yue-jun1, DU Shu-huan4, GUO Yi-hua1 |
1.School of Geography, South China Normal University, Guangzhou 510631, China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xian 710061, China;
3.College of Earth Sciences, East China Institute of Technology, Nanchang 330013, China;
4.Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences,Guangzhou 510301, China |
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Abstract The MGS1 segment of the Milanggouwan stratigraphical section in the Salawusu River Valley, southeast of the Mu Us Desert in China, records 11 sedimentary cycles consisting of alternations between dune sands and fluviolacustrine or paleosols. Based on analysis of grain size and CaCO3 content, we find that the values of mean grain size (Mz), sorting coefficient (σ1), skewness (Sk1), kurtosis (KG) in the dune sands are lower than those in the fluviolacustrine or paleosols, and the CaCO3 contents range from 0.07% to 0.32% (average 0.16%) in the dune sands, 0.05% to 1.50% (average 0.27%) in the fluviolacustrine and 0.06% to 1.42% (average 0.64%) in the paleosols, and the CaCO3 contents have a significant correlation with Mz (R=0.8053); eleven CaCO3 content variation cycles and grain size change cycles indicate the Holocene cold/warm variation and millennial scale Winter/Summer Monsoon variations in East Asia. The periods dominated by winter monsoon correspond well to the cold events occurred at 8 200, 5 000, 4 000, 2 700 and 1 400 a BP recorded in the North Atlantic deep sea sediments, and have significant correlation with climate change in some places in China. The study shows that the variation of East Asian monsoon during the Holocene is manifested as millennial scale alternations of cold-arid winter monsoon with warm-wet summer monsoon.
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Received: 06 November 2011
Published: 20 March 2012
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Cite this article:
WANG Feng-nian, LI Bao-sheng, NIU Dong-Feng, LI Zhi-wen, WEN Xiao-hao, SI Yue-jun, DU Shu-huan, GUO Yi-hua. Holocene Millennial Scale Climate Variations from Records of Grain Size and CaCO3 in MGS1 Segment of Milanggouwan Section in the Salawusu River Valley, China. JOURNAL OF DESERT RESEARCH, 2012, 32(2): 331-339.
URL:
http://www.desert.ac.cn/EN/ OR http://www.desert.ac.cn/EN/Y2012/V32/I2/331
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2012, Vol. 32 
