Palaeoenvironmental implication of grain-size compositions of terrace deposits on the western Chinese Loess Plateau | |
Liu, Xingxing1; Sun, Youbin1,2; Vandenberghe, Jef3; Li, Ying1; An, Zhisheng1,2 | |
2018-06-01 | |
发表期刊 | AEOLIAN RESEARCH |
卷号 | 32期号:3页码:202-209 |
文章类型 | Article |
摘要 | Sedimentary sequences that developed on river terraces have been widely investigated to reconstruct high-resolution palaeoclimatic changes since the last deglaciation. However, frequent changes in sedimentary facies make palaeoenvironmental interpretation of grain-size variations relatively complicated. In this paper, we employed multiple grain-size parameters to discriminate the sedimentary characteristics of aeolian and fluvial facies in the Dadiwan (DDW) section on the western Chinese Loess Plateau. We found that wind and fluvial dynamics have quite different impacts on the grain-size compositions, with distinctive imprints on the distribution pattern. By using a lognormal distribution fitting approach, two major grain-size components sensitive to aeolian and fluvial processes, respectively, were distinguished from the grain-size compositions of the DDW terrace deposits. The fine grain-size component (GSC2) represents mixing of long-distance aeolian and short-distance fluvial inputs, whilst the coarse grain-size component (GSC3) is mainly transported by wind from short-distance sources. Thus GSC3 can be used to infer the wind intensity. Grain-size variations reveal that the wind intensity experienced a stepwise shift from large-amplitude variations during the last deglaciation to small-amplitude oscillations in the Holocene, corresponding well to climate changes from regional to global context. |
关键词 | Chinese Loess Plateau Fluvio-aeolian Grain-size Compositions Aeolian And Fluvial Dynamics |
WOS标题词 | Science & Technology ; Physical Sciences |
DOI | 10.1016/j.aeolia.2018.03.008 |
关键词[WOS] | ASIAN WINTER MONSOON ; NORTH-CENTRAL CHINA ; LAKE-LEVEL CHANGES ; TIBETAN PLATEAU ; AEOLIAN DUST ; EAST-ASIA ; CULTURAL RESPONSE ; CLIMATIC EVENTS ; CORE SEDIMENTS ; LATE MIOCENE |
收录类别 | SCI |
WOS研究方向 | Physical Geography |
WOS类目 | Geography, Physical |
WOS记录号 | WOS:000434747400020 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/5096 |
专题 | 古环境研究室 |
通讯作者 | Sun, Youbin |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Shaanxi, Peoples R China 3.Vrije Univ Amsterdam, Inst Earth Sci, De Boelelaan 1085, NL-1081 HV Amsterdam, Netherlands |
推荐引用方式 GB/T 7714 | Liu, Xingxing,Sun, Youbin,Vandenberghe, Jef,et al. Palaeoenvironmental implication of grain-size compositions of terrace deposits on the western Chinese Loess Plateau[J]. AEOLIAN RESEARCH,2018,32(3):202-209. |
APA | Liu, Xingxing,Sun, Youbin,Vandenberghe, Jef,Li, Ying,&An, Zhisheng.(2018).Palaeoenvironmental implication of grain-size compositions of terrace deposits on the western Chinese Loess Plateau.AEOLIAN RESEARCH,32(3),202-209. |
MLA | Liu, Xingxing,et al."Palaeoenvironmental implication of grain-size compositions of terrace deposits on the western Chinese Loess Plateau".AEOLIAN RESEARCH 32.3(2018):202-209. |
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