干旱区生态环境知识资源中心(Arid): Climatic zonation complicated the lithology controls on the mineralogy and geochemistry of fluvial sediments in the Heihe River basin, NE Tibetan Plateau

Arid

DOI	10.1016/j.quaint.2020.01.016
	Climatic zonation complicated the lithology controls on the mineralogy and geochemistry of fluvial sediments in the Heihe River basin, NE Tibetan Plateau
	Zhang, Jian; Geng, Haopeng; Pan, Baotian; Hu, Xiaofei; Chen, Liping; Wang, Wei; Chen, Dianbao; Zhao, Qiming
通讯作者	Geng, Haopeng
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2020
卷号	537 页码:33-47
英文摘要	Knowledge of the composition of modern fluvial sediments is important for understanding the combined effect of lithology and climatic factors on the erosion and sedimentation within drainage basins, However, this information is incomplete in arid and semiarid environments. In this study, 37 modern fluvial sediment samples were collected from the Heihe River and its major tributaries, in the NE Tibetan Plateau, and for analyses of heavy minerals, trace and rare earth elements (REEs) and grain size. The main aim was to explore the influence of erosion, transport and deposition processes on sediment composition, and to define appropriate provenance indicators specific to these rivers. Along the Heihe River, the amount of unstable minerals is abundant and not changing, these result suggests that chemical weathering plays only a minor role. The composition of six sediment samples obtained from the upper-middle reaches of Heihe River are influenced by hydrodynamic sorting processes, which resulted in enrichment of heavy minerals. In addition, the mineralogical and geochemical compositions lead to different conclusions regarding the contributions from tributaries to the sediments in the middle-lower reaches of the Heihe River. This may reflect the occurrence of contrasting hydrodynamic conditions in Heihe River and its tributaries which result in the transport of different size fractions. Moreover, the < 63 mu m fraction of the sediments from the Heihe River basin has been affected by inputs of eolian dust, which means that this fraction is less influenced by the rock types within the sediment source areas than is the case for the other size fractions. Therefore, we conclude that the sand fraction is more suitable for source to sink analysis of fluvial sediments within this and comparable environments. In the upper areas of the Fengle River basin, the combination of low temperature, sparse vegetation coverage and high precipitation have resulted in intense erosion. This case reminds us to note the effect of the climatic zonation on the provenance analysis in arid regions.
英文关键词	Heihe river Heavy minerals Trace and rare earth elements Provenance analysis Sedimentation and erosional processes
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000517751500004
WOS关键词	BADAIN JARAN DESERT ; CHANGJIANG YANGTZE ; SOIL-EROSION ; PROVENANCE ANALYSIS ; REE GEOCHEMISTRY ; STREAM SEDIMENTS ; HEAVY MINERALS ; GANSU PROVINCE ; GANGA RIVER ; CHINA
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315381
作者单位	Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jian,Geng, Haopeng,Pan, Baotian,et al. Climatic zonation complicated the lithology controls on the mineralogy and geochemistry of fluvial sediments in the Heihe River basin, NE Tibetan Plateau[J]. 兰州大学,2020,537:33-47.
APA	Zhang, Jian.,Geng, Haopeng.,Pan, Baotian.,Hu, Xiaofei.,Chen, Liping.,...&Zhao, Qiming.(2020).Climatic zonation complicated the lithology controls on the mineralogy and geochemistry of fluvial sediments in the Heihe River basin, NE Tibetan Plateau.QUATERNARY INTERNATIONAL,537,33-47.
MLA	Zhang, Jian,et al."Climatic zonation complicated the lithology controls on the mineralogy and geochemistry of fluvial sediments in the Heihe River basin, NE Tibetan Plateau".QUATERNARY INTERNATIONAL 537(2020):33-47.