Arid
DOI10.1007/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
Corresponding AuthorLin, 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.
JournalARABIAN JOURNAL OF GEOSCIENCES
ISSN1866-7511
EISSN1866-7538
Year Published2021
Volume14Issue:21
Abstract in EnglishGrain 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.
Keyword in EnglishFluvial sediment Aeolian deposit Depositional environment Lop Nur Sahu formula
SubtypeArticle
Language英语
Indexed BySCI-E
WOS IDWOS:000712290800012
WOS KeywordSOIL SEQUENCE ; ORIGIN ; CLIMATE ; CHINA ; SEDIMENTS ; YARDANGS ; XINJIANG ; PLATEAU ; RECORD
WOS SubjectGeosciences, Multidisciplinary
WOS Research AreaGeology
Source Institution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
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/368233
Affiliation[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
Recommended Citation
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).
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