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Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley
Wang, FN; Li, BS; Wang, JL; Wen, XH; Niu, DF; Li, ZW; Si, YJ; Guo, YH; Du, SH; libsh@scnu.edu.cn
2012
Source PublicationJOURNAL OF ARID LAND
ISSN1674-6767
Volume4Issue:3Pages:231-240
AbstractSituated in the Salawusu River Valley, southeast of China's Mu Us Desert, the MGS2 (Milanggouwan section) portion of the Milanggouwan stratigraphic section records 5.5 sedimentary cycles consisting of alternations between dune sand deposits and fluvial or lacustrine facies. We analyzed the grain-size and CaCO3 distributions in MGS2, and found that Mz (mean particle diameter) and a (standard deviation) displayed clear variations in peaks and valleys within different sedimentary facies. The CaCO3 content averaged 0.4% in the dune sand deposits, 1.43% in the fluvial facies, and 8.82% in the lacustrine facies. Both the grain-size distribution and CaCO3 contents, which equal the indicators for the alternation among the sedimentary fades, suggest the occurrence of 5.5 cycles. These results suggest that the observed cycles mainly resulted from fluctuations between a cold and dry winter monsoon climate and a warm and humid summer monsoon climate, and that the MGS2 portion experienced at least 5.5 fluctuations between these two extremes. This high-frequency climatic fluctuation indicates a strong influence of millennium-scale variations in the strength of the East Asian winter and summer monsoons in our study area during the Pleniglacial.
Department[Wang, FengNian; Li, BaoSheng; Wen, XiaoHao; Niu, DongFeng; Si, YueJun; Guo, YiHua] S China Normal Univ, Sch Geog, Guangzhou 510631, Guangdong, Peoples R China; [Li, BaoSheng] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China; [Wang, JiangLong] Chenghai Middle Sch, Shantou 510601, Peoples R China; [Li, ZhiWen] E China Inst Technol, Coll Earth Sci, Nanchang 330013, Peoples R China; [Du, ShuHuan] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
KeywordSalawusu River Valley Pleniglacial Paleoclimatic Indices Caco3 Grain-size
Subject AreaEnvironmental Sciences
Language英语
Funding Project海洋地质
WOS IDWOS:000307201200001
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10317
Collection中科院边缘海地质重点实验室
Corresponding Authorlibsh@scnu.edu.cn
Recommended Citation
GB/T 7714
Wang, FN,Li, BS,Wang, JL,et al. Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley[J]. JOURNAL OF ARID LAND,2012,4(3):231-240.
APA Wang, FN.,Li, BS.,Wang, JL.,Wen, XH.,Niu, DF.,...&libsh@scnu.edu.cn.(2012).Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley.JOURNAL OF ARID LAND,4(3),231-240.
MLA Wang, FN,et al."Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley".JOURNAL OF ARID LAND 4.3(2012):231-240.
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