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  4. 岩石圈演化国家重点实验室
Pronounced changes in atmospheric circulation and dust source area during the mid-Pleistocene as indicated by the Caotan loess-soil sequence in North China

文献类型：期刊论文

作者Peng, Shasha1; Ge, Junyi2,3; Li, Chaozhu4; Liu, Zongxiu4; Qi, Lin1; Tan, Yuanlong4; Cheng, Yu4; Deng, Chenglong5; Qiao, Yansong4
刊名QUATERNARY INTERNATIONAL
出版日期2015-06-22
卷号372页码:97-107
关键词Loess-soil Sequence Anisotropy Of Magnetic Susceptibility Huining Sem Plateau Monsoon
DOI10.1016/j.quaint.2014.09.075
文献子类Article
英文摘要The Quaternary loess-soil sequence in North China is of significant value for tracing variations in atmospheric circulation. In this study, we measured the anisotropy of magnetic susceptibility (AMS) of the Caotan (CT) loess-soil sequence from the northeastern margin of the Tibetan Plateau (TP) and analyzed the surface textural features of quartz grains of representative samples. The AMS results indicate a primary sedimentary magnetic fabric without significant disturbance by pedogenesis. The Dec-K-max values indicate a significant shift of the dominant surface wind direction from nearly N-S to W-E since similar to 300 ka, while the surface textural features of the quartz grains indicate an increase in the contribution from fluvioglacial sediments derived from the TP at the same time. As there is no evidence of significant climatic changes around 300 ka, we attribute the coeval changes of atmospheric circulation and dust source area to the uplift of the TP during the mid-Pleistocene and the resulting climatic cooling. Cooling of the TP may have led not only to the enhancement of the plateau monsoon but also to the significant accumulation of plateau glaciers, which would have resulted in accelerated physical erosion of the underlying rocks, thus increasing the quantity of fine-grained fluvioglacial sediments to be transported to the study site. (C) 2014 Elsevier Ltd and INQUA. All rights reserved.
WOS关键词HEMISPHERE ICE SHEETS ; TIBETAN PLATEAU ; MAGNETIC-SUSCEPTIBILITY ; ATLANTIC-OCEAN ; PALEOWIND DIRECTIONS ; MONSOON VARIATIONS ; GANSU PROVINCE ; GLACIAL CYCLES ; QUARTZ GRAINS ; TIME-SCALE
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000355674100012
资助机构National Department Public Benefit Research Foundation of China(201211077) ; National Department Public Benefit Research Foundation of China(201211077) ; National Natural Science Foundation of China(41372362 ; National Natural Science Foundation of China(41372362 ; 41002125) ; 41002125) ; National Department Public Benefit Research Foundation of China(201211077) ; National Department Public Benefit Research Foundation of China(201211077) ; National Natural Science Foundation of China(41372362 ; National Natural Science Foundation of China(41372362 ; 41002125) ; 41002125)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62513]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位1.China Univ Geosci, Sch Earth Sci & Res, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
4.Chinese Acad Geol Sci, Inst Geomechan, Beijing 100081, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Peng, Shasha,Ge, Junyi,Li, Chaozhu,et al. Pronounced changes in atmospheric circulation and dust source area during the mid-Pleistocene as indicated by the Caotan loess-soil sequence in North China[J]. QUATERNARY INTERNATIONAL,2015,372:97-107.
APA Peng, Shasha.,Ge, Junyi.,Li, Chaozhu.,Liu, Zongxiu.,Qi, Lin.,...&Qiao, Yansong.(2015).Pronounced changes in atmospheric circulation and dust source area during the mid-Pleistocene as indicated by the Caotan loess-soil sequence in North China.QUATERNARY INTERNATIONAL,372,97-107.
MLA Peng, Shasha,et al."Pronounced changes in atmospheric circulation and dust source area during the mid-Pleistocene as indicated by the Caotan loess-soil sequence in North China".QUATERNARY INTERNATIONAL 372(2015):97-107.

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来源：地质与地球物理研究所

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