干旱区生态环境知识资源中心(Arid): Geochemical characteristics and the provenance of aeolian material in the Hexi Corridor Desert, China

Arid

DOI	10.1016/j.catena.2020.104483
	Geochemical characteristics and the provenance of aeolian material in the Hexi Corridor Desert, China
	Zhang, Zhengcai; Pan, Kaijia; Zhang, Caixia; Liang, Aiming
通讯作者	Pan, KJ
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	190
英文摘要	The Hexi Corridor Desert is in Gansu Province, northwestern China. The material provenance of desert formation and development is the primary factor of aeolian geomorphology, and it is still not fully understood in the Hexi Corridor Desert. To identify sources of aeolian sand in the formation of dunes in the Hexi Corridor Desert, we investigated 12 sites and collected 70 samples from the dune surface. This study used ratios between Na2O/Al2O3 versus K2O/Al2O3 and SiO2/Al2O3, Ba/Sr versus Rb/Sr and Rb/Sr versus Ce/Sr as well as CaO and Cl composition to identify sediment provenance. CaO was enriched relative to the composition of the upper continental crust (UCC), consistent with a previous study conducted in the Taklamakan and Badain Jaran deserts on adjacent fluvial, lacustrine and gravel deserts, but it differed from one study conducted in the Kumtagh and Tengger deserts. Cl concentrations differed in lacustrine and sand sediments, being higher in lacustrine sediments, followed by sand sediment. Sand sample geochemistry was similar throughout, indicating that sources of sand formation were also similar, which was confirmed by the multidimensional scaling (MDS) and principal component analysis (PCA) methods. Additionally, based on regional topography, the Hexi Corridor acts as a sediment sink not only for sediment from the Qilian Mountains but also for sediment from the Beishan Mountains. The MDS and PCA approaches also indicated that sediment provenance was similar in the Hexi Corridor and the Tengger, Badain Jaran and Kumtagh deserts. Therefore, it can be concluded that dry fluvial deposits, alluvial deposits and lacustrine sediments that combined comprised sand dune provenance were the sources of sand in the Hexi Corridor Desert, and these deposits derived from the Qilian Mountains in the southwest and the Beishan Mountains in the north through alluvial processes.
英文关键词	Aeolian Geochemical characteristics Multidimensional scaling Principal component analysis Provenance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000525324600002
WOS关键词	GRAIN-SIZE CHARACTERISTICS ; BADAIN JARAN DESERT ; DUNE FIELDS ; SAND DUNES ; SEDIMENT ; TRANSPORT ; DUST ; EVOLUTION ; HOLOCENE ; DEPOSITS
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324328
作者单位	[Zhang, Zhengcai; Pan, Kaijia; Zhang, Caixia; Liang, Aiming] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Pan, Kaijia; Liang, Aiming] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhengcai,Pan, Kaijia,Zhang, Caixia,et al. Geochemical characteristics and the provenance of aeolian material in the Hexi Corridor Desert, China[J]. 中国科学院西北生态环境资源研究院,2020,190.
APA	Zhang, Zhengcai,Pan, Kaijia,Zhang, Caixia,&Liang, Aiming.(2020).Geochemical characteristics and the provenance of aeolian material in the Hexi Corridor Desert, China.CATENA,190.
MLA	Zhang, Zhengcai,et al."Geochemical characteristics and the provenance of aeolian material in the Hexi Corridor Desert, China".CATENA 190(2020).