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DOI	10.1029/2021JF006480
	Uranium Isotopic Composition and Constraints on the Provenance of the Qinghai-Tibet Plateau's Surface Dust
	Jiao, Xiaoyu; Dong, Zhiwen; Parteli, Eric J. R.; Brahney, Janice; Wei, Ting; Augusto, Marcelli; Nie, Junsheng; Ren, Jiawen; Qin, Xiang
通讯作者	Dong, ZW (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou, Peoples R China. ; Dong, ZW (通讯作者)，Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China.
发表日期	2022
ISSN	2169-9003
EISSN	2169-9011
卷号	127 期号:3
英文摘要	The production and emission of aeolian dust can provide key information on the contemporary and historical links between geological evolution and climate. Here we use U-234/U-238 isotope ratios and the uranium (U) comminution age method on samples collected from Qinghai-Tibet Plateau (TP) surface dust and glacier snowpack/cryoconites to determine the erosion and potential transport provenance of the dust, regardless of petrological origin. The spatial variation of the (U-234/U-238) isotope ratios of TP dust showed relatively high values in the Songpan-Ganzi-Hoh Xil, Himalayan and the Kunlun-Qaidam-Qilian terranes, while showing relatively low (U-234/U-238) values in Lhasa and Qiangtang terranes, but among all samples the highest value appeared in the glaciation zone. Dust collected from nearby glacial areas with rugged terrain (e.g., the Qilian and Himalayan Mountains) have higher (U-234/U-238) values than those collected in the topologically flat non-glacial areas. These differences are consistent with elevated erosion rates and dust comminution-transport processes in glacial areas, which yield a major source for large quantities of fresh comminuted particles. Compared to sediments from other regions of the globe, the (U-234/U-238) values of the typical aeolian sinks (such as loess on the Loess Plateau and ice core dust, etc.) are generally lower in comparison to areas with high elevations where erosion rates are high. The (U-234/U-238) isotope values of TP dust tend to fall between the high-elevation sites and the dust sinks, indicating the combined influence of short comminution times (tectonics, landscape dynamics, and glacial erosion) and long residence time on the TP. When compared with other central Asian dust sources, U-Nd-Sr isotope signatures in TP dust are distinct and can be thus used as an effective tracer of dust provenance. Using U isotopes, we show that dust originating from the TP undergoes long-range transport and constitutes potentially significant component of the Asian and Northern Hemisphere atmospheric dust load.
关键词	SERIES ISOTOPES ICE CORE LANDSCAPE EVOLUTION SEDIMENT TRANSPORT HIMALAYAN OROGEN EOLIAN DEPOSITS NORTHERN CHINA EASTERN MARGIN TIME-SCALE SR
英文关键词	uranium isotope; dust provenance tracing; Tibetan plateau dust; long range dust cycle
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000776590100022
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254322
作者单位	[Jiao, Xiaoyu; Dong, Zhiwen; Wei, Ting; Ren, Jiawen; Qin, Xiang] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryosphere Sci, Lanzhou, Peoples R China; [Jiao, Xiaoyu; Wei, Ting; Ren, Jiawen] Univ Chinese Acad Sci, Beijing, Peoples R China; [Dong, Zhiwen] Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; [Parteli, Eric J. R.] Univ Duisburg Essen, Dept Phys, Duisburg, Germany; [Brahney, Janice] Utah State Univ, Dept Watershed Sci, Logan, UT 84322 USA; [Augusto, Marcelli] INFN, LNF, Frascati, Italy; [Augusto, Marcelli] CNR, Ist Struttura Mat & Elettra Sincrotrone Trieste, Basovizza Area Sci Pk, Trieste, Italy; [Nie, Junsheng] Lanzhou Univ, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou, Peoples R China; [Qin, Xiang] Chinese Acad Sci, Qilian Mt Glacier & Ecol Environm Res Stn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Jiao, Xiaoyu,Dong, Zhiwen,Parteli, Eric J. R.,et al. Uranium Isotopic Composition and Constraints on the Provenance of the Qinghai-Tibet Plateau's Surface Dust[J]. 中国科学院西北生态环境资源研究院,2022,127(3).
APA	Jiao, Xiaoyu.,Dong, Zhiwen.,Parteli, Eric J. R..,Brahney, Janice.,Wei, Ting.,...&Qin, Xiang.(2022).Uranium Isotopic Composition and Constraints on the Provenance of the Qinghai-Tibet Plateau's Surface Dust.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,127(3).
MLA	Jiao, Xiaoyu,et al."Uranium Isotopic Composition and Constraints on the Provenance of the Qinghai-Tibet Plateau's Surface Dust".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 127.3(2022).