干旱区生态环境知识资源中心(Arid): Mechanical transport revealed by optical textures of heavy minerals in aeolian sand: A case study in the Badain Jaran Desert, Northwestern China

Arid

DOI	10.1016/j.scitotenv.2024.172364
	Mechanical transport revealed by optical textures of heavy minerals in aeolian sand: A case study in the Badain Jaran Desert, Northwestern China
	Yu, Xinhui; Dong, Shipei; Wang, Wenyuan; Deng, Yuxian; Liu, Xinyue; Li, Zhuolun
通讯作者	Li, ZL
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2024
卷号	928
英文摘要	Determining whether and to what extent the relative abundance of heavy minerals in original detrital assemblage has been modified by mechanical transport is beneficial for understanding regional historical climate changes and acquiring modern sediment provenance information. Utilizing the frequency of surface mechanical optical textures of heavy minerals may be an effective approach to address this question. However, the connection between the frequency surface mechanical optical textures of heavy minerals and the variations in the relative abundance of these minerals remains uncertain. In this study, 12 modern aeolian sand samples were collected from the Badain Jaran Desert in hyper arid region of northwestern China, characterized by weak weathering to analyze their relative contents of five major heavy minerals. Then, 3796 transparent heavy mineral grains were photographed under the parallel light of a polarizing microscope, and the frequency of 13 surface mechanical optical textures were calculated. The results reveal that the variations in the relative abundance of heavy minerals are substantially influenced by mechanical transport. The decrease in the relative abundance of heavy minerals with weak mechanical stability primarily attributed to mechanical collision. Conversely, the variations in the relative abundance of heavy minerals with strong mechanical stability are primarily influenced by mechanical abrasion. Therefore, mechanical transport impact on the relative abundance of heavy minerals in regions with weak chemical weathering. Establishing heavy mineral characteristic indices for provenance studies using the relative abundance of mechanically unstable minerals may not directly indicate transport distance but rather the strength of wind forces, which have significant potential in palaeo wind regime studies. This study expands the research field of sediment surface micromorphology and has potential applications in inferring past climate changes and determining modern sediment provenance.
英文关键词	Desert Aeolian sand Heavy minerals Surface textures Transport
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001230344100001
WOS关键词	CALCAREOUS ROOT TUBES ; MU US DESERT ; IMAGE-ANALYSIS ; QUARTZ GRAINS ; PROVENANCE ; SEDIMENT ; AREA ; RIVER ; MICROTEXTURES ; GEOCHEMISTRY
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405490
推荐引用方式 GB/T 7714	Yu, Xinhui,Dong, Shipei,Wang, Wenyuan,et al. Mechanical transport revealed by optical textures of heavy minerals in aeolian sand: A case study in the Badain Jaran Desert, Northwestern China[J],2024,928.
APA	Yu, Xinhui,Dong, Shipei,Wang, Wenyuan,Deng, Yuxian,Liu, Xinyue,&Li, Zhuolun.(2024).Mechanical transport revealed by optical textures of heavy minerals in aeolian sand: A case study in the Badain Jaran Desert, Northwestern China.SCIENCE OF THE TOTAL ENVIRONMENT,928.
MLA	Yu, Xinhui,et al."Mechanical transport revealed by optical textures of heavy minerals in aeolian sand: A case study in the Badain Jaran Desert, Northwestern China".SCIENCE OF THE TOTAL ENVIRONMENT 928(2024).