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Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China
Niu, Dongfeng1; Si, Yuejun2; Li, Baosheng3,4; Wang, Fengnian5; Shu, Peixian4; Wen, Xiaohao3; Guo, Yihua6; Wang, Chen3
通讯作者Si, Yuejun(830811moon@163.com)
2021
发表期刊GEOCHEMICAL JOURNAL
ISSN0016-7002
卷号55期号:4页码:265-276
摘要The MGS1 segment of the Milanggouwan stratigraphic section, which is located on the southeastern margin of the Mu Us Desert in China, recorded 11 sedimentary cycles consisting of aeolian dune sands overlapping with fluvio-lacustrine facies or paleosols in the Holocene. Through the analysis of trace elements, gastropods, and sporopollen fossils in some layers of the MGS1, this study presents the monsoon climate fluctuations on the millennial-scale in the Mu Us Desert during the Holocene. The results show that the contents of trace elements (P, Pb, Rb, Nb, Zr, V, Sr, Cu, Ni, As, B a, and Co) have similar distribution characteristic, their contents are low in the dune sands but are relatively high in the overlying fluvio-lacustrine facies or paleosols showing 11 cycles in alternation of valleys and peaks. The trace elements in the paleo-mobile dune sands of MGS1 are quite consistent with those of modern mobile dune sands in Salawusu River Valley; therefore, paleo-mobile dune sands can be assumed to be a result of the main periods of the prevalence of East Asian winter monsoon. The increased element contents in the overlying fluvio-lacustrine facies or paleosols are mainly due to the prevailing East Asian summer monsoon. In addition, the 11 elements' cycles represent the climate changes on the millennial-scale in the alternation of East Asian winter and summer monsoons in the Holocene. The paleoecology indicated by gastropods and sporopollen fossils reflects the warm and humid sparse forest grassland environment prevailing in the East Asian summer monsoon when the fluvio-lacustrine facies were deposited; the sporopollen is missing in the dune sands, presumably, it might be dry and windy sandy desert then. The dominant periods of the winter monsoon in these cycles, in terms of time and nature of the climate, could correspond to the cold events in the North Atlantic and lakes, loess, peat and stalagmites in China. It probably indicates that the millennial-scale environmental changes in China's desert regions may be caused by the changes of solar radiation and the increase in ice volume in the Northern Hemisphere during the Holocene.
关键词Holocene Mu Us desert trace elements paleontological evidence millennial-scale monsoon climate fluctuations
DOI10.2343/geochemj.2.0636
关键词[WOS]HUGUANGYAN MAAR LAKE ; ASIAN MONSOON ; ENVIRONMENTAL-CHANGES ; NORTHERN CHINA ; POLLEN RECORD ; PRECIPITATION ; EVOLUTION ; SEQUENCES ; SEDIMENTS ; EVENTS
收录类别SCI ; SCI
语种英语
资助项目National Natural Science Foundation of China[41290250] ; National Natural Science Foundation of China[41771003] ; National Basic Research Program of China[2013CB955903] ; Natural Science Foundation of Guangxi Province, China[2017GXNSFBA198126]
WOS研究方向Geochemistry & Geophysics
项目资助者National Natural Science Foundation of China ; National Basic Research Program of China ; Natural Science Foundation of Guangxi Province, China
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000693113800007
出版者GEOCHEMICAL SOC JAPAN
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/16989
专题加速器质谱中心
通讯作者Si, Yuejun
作者单位1.Lingnan Normal Univ, Zhanjiang 524048, Guangdong, Peoples R China
2.Nanning Normal Univ, Nanning 530001, Guangxi, Peoples R China
3.South China Normal Univ, Guangzhou 510631, Guangdong, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shanxi, Peoples R China
5.Huizhou Univ, Huizhou 516001, Guangdong, Peoples R China
6.Guangzhou Inst Geog, Guangzhou 510070, Guangdong, Peoples R China
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Niu, Dongfeng,Si, Yuejun,Li, Baosheng,et al. Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China[J]. GEOCHEMICAL JOURNAL,2021,55(4):265-276.
APA Niu, Dongfeng.,Si, Yuejun.,Li, Baosheng.,Wang, Fengnian.,Shu, Peixian.,...&Wang, Chen.(2021).Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China.GEOCHEMICAL JOURNAL,55(4),265-276.
MLA Niu, Dongfeng,et al."Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China".GEOCHEMICAL JOURNAL 55.4(2021):265-276.
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