IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley
Wang, FN (Wang, FengNian)[1]; Li, BS (Li, BaoSheng)[1,2]; Wang, JL (Wang, JiangLong)[3]; Wen, XH (Wen, XiaoHao)[1]; Niu, DF (Niu, DongFeng)[1]; Li, ZW (Li, ZhiWen)[4]; Si, YJ (Si, YueJun)[1]; Guo, YH (Guo, YiHua)[1]; Du, SH (Du, ShuHuan)[5]
2012-09-30
Source PublicationJOURNAL OF ARID LAND
Volume4Issue:3Pages:231-240
Subtype期刊论文
Abstract

Situated 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.

KeywordSalawusu River Valley Pleniglacial Paleoclimatic Indices Caco3 Grain-size
DOI10.3724/SP.J.1227.2012.00231
Indexed BySCIE
Language英语
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10163
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorLi, BS (Li, BaoSheng)[1,2]
Affiliation1.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,Xi’an 710061, China;
3.Chenghai Middle School, Shantou 510601, China;
4.College of Earth Science, East China Institute of Technology, Nanchang 330013, China;
5.Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences,Guangzhou 510301, China
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 .,...&Du, SH .(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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