Mineralogical and morphological properties of individual dust particles in ice cores from the Tibetan Plateau

doi:10.1017/jog.2016.8

	Mineralogical and morphological properties of individual dust particles in ice cores from the Tibetan Plateau
	Zhang, XL (Zhang, Xuelei)4; Wu, GJ ; Xu, TL (Xu, Tianli)2,6; Zhang, CL (Zhang, Chenglong)5; Wu, GJ (Wu, Guangjian)1,2,3
刊名	JOURNAL OF GLACIOLOGY
	2016
卷号	62 期号:231 页码:46-53
关键词	Ace-asia Electron-microscopy Greenland Ice Soil Dust China Aerosol Chemistry Regions Shape Snow
DOI	10.1017/jog.2016.8
文献子类	Article
英文摘要	Using a field emission scanning electron microscope and energy-dispersive X-ray spectrometer (FESEM-EDS), individual insoluble dust particles in ice cores recovered from the northern (Dunde), western (Murtagata) and south-eastern (Palong-Zangbo) Tibetan Plateau were analysed in order to reveal the mineralogical and morphological characteristics of the analogue of long-range transported Asian dust. The results reveal that the dust particles are mainly composed of quartz (17-36%, number abundance), clay (37-48%) and feldspar (12-18%). Illite and chlorite are the dominant clay species, while kaolinite is rarely observed. For the three sites, regional differences in the mineral assemblages are significant, in particular the abundance of quartz, chlorite and muscovite species, reflecting the regional provenance of these dust particles and the climatic regime in their source areas. Oxide ratios in clays indicate different weathering strengths of the particles in their source regions, with a higher K2O/(SiO2 + Al2O3) in the western and northern Tibetan Plateau. The individual particles have modes of 1.48 and 1.53 in the aspect ratio and circularity distribution respectively. No significant relationship between aspect ratio and circularity was found. Quartz and feldspar particles have a narrow aspect ratio distribution. Muscovite particles have the coarsest grain size, while chlorite particles have the finest.
学科主题	自然地理学
语种	英语
WOS记录号	WOS:000376838400005
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/7867]
专题	青藏高原研究所_图书馆
通讯作者	Wu, GJ
作者单位	1.Chinese Acad Sci, Inst Tibetan Plateau Res, 16 Courtyard,Lincui Rd, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China 3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Peoples R China 5.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, XL ,Wu, GJ,Xu, TL ,et al. Mineralogical and morphological properties of individual dust particles in ice cores from the Tibetan Plateau[J]. JOURNAL OF GLACIOLOGY,2016,62(231):46-53.
APA	Zhang, XL ,Wu, GJ,Xu, TL ,Zhang, CL ,&Wu, GJ .(2016).Mineralogical and morphological properties of individual dust particles in ice cores from the Tibetan Plateau.JOURNAL OF GLACIOLOGY,62(231),46-53.
MLA	Zhang, XL ,et al."Mineralogical and morphological properties of individual dust particles in ice cores from the Tibetan Plateau".JOURNAL OF GLACIOLOGY 62.231(2016):46-53.