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

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 1,2; Mu, Guijin 2; Xu, Lishuai 3; Zhao, Xue 4
刊名	ARABIAN JOURNAL OF GEOSCIENCES
	2021-11-01
卷号	14 期号:21 页码:9
关键词	Fluvial sediment Aeolian deposit Depositional environment Lop Nur Sahu formula
ISSN号	1866-7511
DOI	10.1007/s12517-021-08630-x
通讯作者	Lin, Yongchong(linyongchong@itpcas.ac.cn) ; Zhao, Xue(496760641@qq.com)
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.
资助项目	National Natural Science Foundation of China (NSFC)[41601012] ; Middle-aged and Young Teacher Education Project of Fujian Province, China[JAT190365] ; College Cultivating Program for Outstanding Young Scientific Talents of Fujian Province ; Fund of Shanxi Agricultural University[2016YJ16]
WOS关键词	SOIL SEQUENCE ; ORIGIN ; CLIMATE ; CHINA ; SEDIMENTS ; YARDANGS ; XINJIANG ; PLATEAU ; RECORD
WOS研究方向	Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000712290800012
资助机构	National Natural Science Foundation of China (NSFC) ; Middle-aged and Young Teacher Education Project of Fujian Province, China ; College Cultivating Program for Outstanding Young Scientific Talents of Fujian Province ; Fund of Shanxi Agricultural University
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17169]
专题	地球环境研究所_加速器质谱中心
通讯作者	Lin, Yongchong; Zhao, Xue
作者单位	1.Minnan Normal Univ, Sch Hist & Geog, Zhangzhou 363500, Peoples R China 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China 3.Shanxi Agr Univ, Coll Resources & Environm, Jinzhong, Peoples R China 4.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]. ARABIAN JOURNAL OF GEOSCIENCES,2021,14(21):9.
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),9.
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):9.