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Evidences of rapid erosion driven by climate in the Yarlung Zangbo (Tsangpo) Great Canyon, the eastern Himalayan syntaxis

文献类型：期刊论文

作者Yu XiangJiang1; Ji JianQing1; Gong JunFeng1; Sun DongXia1; Qing JianChun1; Wang LiNing1; Zhong DaLai2; Zhang ZhiCheng1
刊名CHINESE SCIENCE BULLETIN
出版日期2011-04-01
卷号56期号:11页码:1123-1130
ISSN号1001-6538
DOI10.1007/s11434-011-4419-x
文献子类Article
英文摘要Climate and tectonism are both particularly intense in the Yarlung Zangbo (Tsangpo) Great Canyon in the eastern Himalayan syntaxis, which is characterized by the most rapid landscape evolution of anywhere in the world. Thus, the eastern Himalayan syntaxis is one of the best locations to study the interactions between climate and tectonics. This paper investigates the cooling ages of the Doxong La-Baibung profile using apatite fission track (AFT) dating on 11 bedrock samples at elevations ranging from 4210 to 710 m. There are topographic, climatic, metamorphic, and thermochronological gradients in the profile, providing good conditions to study interactions between climate and tectonics. AFT ages ranged from 4.6 +/- 0.6 Ma to 1.7 +/- 0.3 Ma, and the mean fission track lengths ranged from 11.0 to 12.4 mu m. It was found that the cooling rates revealed by AFT ages increased with decreasing elevation. However, the tendency of the cooling rates revealed by the (40)Ar-(39)Ar ages was different from that indicated by the AFT ages. Moreover, for most districts of the eastern Himalayan syntaxis, the compiled AFT age distribution correlates well with the annual average precipitation, indicating the coupling of the cooling and erosion rates of the near-surface rock and precipitation. The geothermal history modeling results indicate an obvious increase in the cooling and erosion rate between 1.0 and 0.5 Ma. This age is consistent with other research findings for this time, when the vapor channel of the Yarlung Zangbo Great Canyon began to take effect. These evidences suggest that climate, especially precipitation, has acting as a key factor influencing the rapid cooling and erosion in the Yarlung Zangbo Great Canyon since 1-0.5 Ma.
WOS关键词NAMCHE-BARWA SYNTAXIS ; GLACIAL EROSION ; FISSION TRACKS ; RIVER INCISION ; SEDIMENT FLUX ; GYALA-PERI ; PRECIPITATION ; EXHUMATION ; APATITE ; GEOCHRONOLOGY
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000289898600010
出版者SCIENCE CHINA PRESS
资助机构National Natural Science Foundation of China(40872149 ; National Natural Science Foundation of China(40872149 ; National Natural Science Funds for Distinguished Young Scholar(41002067) ; National Natural Science Funds for Distinguished Young Scholar(41002067) ; 40472100) ; 40472100) ; National Natural Science Foundation of China(40872149 ; National Natural Science Foundation of China(40872149 ; National Natural Science Funds for Distinguished Young Scholar(41002067) ; National Natural Science Funds for Distinguished Young Scholar(41002067) ; 40472100) ; 40472100) ; National Natural Science Foundation of China(40872149 ; National Natural Science Foundation of China(40872149 ; National Natural Science Funds for Distinguished Young Scholar(41002067) ; National Natural Science Funds for Distinguished Young Scholar(41002067) ; 40472100) ; 40472100) ; National Natural Science Foundation of China(40872149 ; National Natural Science Foundation of China(40872149 ; National Natural Science Funds for Distinguished Young Scholar(41002067) ; National Natural Science Funds for Distinguished Young Scholar(41002067) ; 40472100) ; 40472100)
源URL[http://ir.iggcas.ac.cn/handle/132A11/74788]  
专题中国科学院地质与地球物理研究所
通讯作者Ji JianQing
作者单位1.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Yu XiangJiang,Ji JianQing,Gong JunFeng,et al. Evidences of rapid erosion driven by climate in the Yarlung Zangbo (Tsangpo) Great Canyon, the eastern Himalayan syntaxis[J]. CHINESE SCIENCE BULLETIN,2011,56(11):1123-1130.
APA Yu XiangJiang.,Ji JianQing.,Gong JunFeng.,Sun DongXia.,Qing JianChun.,...&Zhang ZhiCheng.(2011).Evidences of rapid erosion driven by climate in the Yarlung Zangbo (Tsangpo) Great Canyon, the eastern Himalayan syntaxis.CHINESE SCIENCE BULLETIN,56(11),1123-1130.
MLA Yu XiangJiang,et al."Evidences of rapid erosion driven by climate in the Yarlung Zangbo (Tsangpo) Great Canyon, the eastern Himalayan syntaxis".CHINESE SCIENCE BULLETIN 56.11(2011):1123-1130.

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来源：地质与地球物理研究所

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