干旱区生态环境知识资源中心(Arid): Grain size characteristics of the sand silt layers in the ancient delta of the dried Lop Nur lake (east Tarim Basin) and their environmental implications

Arid

DOI	10.1007/s12517-021-08630-x
	Grain size characteristics of the sand silt layers in the ancient delta of the dried Lop Nur lake (east Tarim Basin) and their environmental implications
	Lin, Yongchong; Mu, Guijin; Xu, Lishuai; Zhao, Xue
通讯作者	Lin, YC (corresponding author), Minnan Normal Univ, Sch Hist & Geog, Zhangzhou 363500, Peoples R China. ; Lin, YC (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China. ; Zhao, X (corresponding author), Chinese Acad Sci, Inst Earth Environm, Xian 710061, Peoples R China.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2021
卷号	14 期号:21
英文摘要	Grain size characteristics of sediments are an effective index for the depositional environment. However, whether grain size is an accurate indicator for the formation environment is still obscure. In this study, two main types of lithology can be found in the yardang sediments from the Loulan area (Lop Nur): sand-silt layers and clay-silt layers. These two types are common in arid northwestern China. The clay-silt layers were primarily composed of lacustrine-swamp deposits, whereas the sand silt layers were formed under fluvial conditions based on geomorphic and stratigraphic lithologic evidence. However, grain size characteristics of the sand-silt layers, such as grain size distribution, C-M diagram, and grain size parameters, were consistent with that of the aeolian deposits. The study of the field deposition environment indicated that the sand-silt layers were fluvial sediments of materials originating from the aeolian sediments transported over a short distance and deposited by floods. As a result, the fluvial sediments exhibited the grain size characteristics of aeolian sediments. This indicates that some sediments may retain different depositional environment information, having undergone transportation and deposition processes. Therefore, when using grain size characteristics to determine the depositional environment, field deposition environment investigation should be combined with other environmental proxy indicators.
英文关键词	Fluvial sediment Aeolian deposit Depositional environment Lop Nur Sahu formula
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000712290800012
WOS关键词	SOIL SEQUENCE ; ORIGIN ; CLIMATE ; CHINA ; SEDIMENTS ; YARDANGS ; XINJIANG ; PLATEAU ; RECORD
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
来源机构	中国科学院新疆生态与地理研究所 ; 中国科学院地球环境研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368233
作者单位	[Lin, Yongchong] Minnan Normal Univ, Sch Hist & Geog, Zhangzhou 363500, Peoples R China; [Lin, Yongchong; Mu, Guijin] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Xu, Lishuai] Shanxi Agr Univ, Coll Resources & Environm, Jinzhong, Peoples R China; [Zhao, Xue] Chinese Acad Sci, Inst Earth Environm, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Lin, Yongchong,Mu, Guijin,Xu, Lishuai,et al. Grain size characteristics of the sand silt layers in the ancient delta of the dried Lop Nur lake (east Tarim Basin) and their environmental implications[J]. 中国科学院新疆生态与地理研究所, 中国科学院地球环境研究所,2021,14(21).
APA	Lin, Yongchong,Mu, Guijin,Xu, Lishuai,&Zhao, Xue.(2021).Grain size characteristics of the sand silt layers in the ancient delta of the dried Lop Nur lake (east Tarim Basin) and their environmental implications.ARABIAN JOURNAL OF GEOSCIENCES,14(21).
MLA	Lin, Yongchong,et al."Grain size characteristics of the sand silt layers in the ancient delta of the dried Lop Nur lake (east Tarim Basin) and their environmental implications".ARABIAN JOURNAL OF GEOSCIENCES 14.21(2021).