Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China

doi:10.1016/j.yqres.2016.01.006

	Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China
	Ju, JT (Ju, Jian-Ting)3; Feng, JL ; Zhao, X (Zhao, Xiang)2; Hu, ZG (Hu, Zhao-Guo)1,3; Chen, F (Chen, Feng)3,4; Gao, SP (Gao, Shao-Peng)3; Feng, JL (Feng, Jin-Liang)3
刊名	QUATERNARY RESEARCH
	2016
卷号	85 期号:2 页码:279-289
关键词	Northeastern Tibetan Plateau Grain-size Distribution Loess Plateau Dust Provenance Climate-change Paleoclimatic Implications Magnetic-susceptibility Last Glaciation Chengdu Plain Deposits
DOI	10.1016/j.yqres.2016.01.006
文献子类	Article
英文摘要	The late Quaternary sedimentary sequence in the northwestern part of the Sichuan Basin consists of five lithological units and with increasing depth include the: Chengdu Clay; Brown Clay; Red Clay; Sandy Silt; and basal Muddy Gravel. The genesis, provenance and age of the sediments, as well as the possible presence of hiatuses within this sequence are debated. Measurements of grain-size, magnetic susceptibility, quartz content, quartz 8180 values, element composition, and Sr-Nd isotopic concentrations of samples from a typical sedimentary sequence in the area provides new insights into the genesis and history of the sequence. The new data confirm that the sediments in study site are alluvial-aeolian in origin, with basal alluvial deposits overlain by aeolian deposits. Like the uppermost Chengdu Clay, the underlying Brown Clay and Red Clay are aeolian in origin. In contrast, the Silty Sand, like the basal Muddy Gravel, is an alluvial deposit and not an aeolian deposit as previously thought. Moreover, the succession of the aeolian deposits very likely contains two significant sedimentary hiatuses. Sedimentological analysis demonstrates that the source materials for the aeolian deposits in the northwestern part of the Sichuan Basin and those on the eastern Tibetan Plateau are different. Furthermore, the loess deposits on the eastern Tibetan Plateau are derived from heterogeneous local sources. (C) 2016 University of Washington. Published by Elsevier Inc. All rights reserved.
学科主题	自然地理学
语种	英语
WOS记录号	WOS:000373661300010
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/7743]
专题	青藏高原研究所_图书馆
通讯作者	Feng, JL
作者单位	1.China Cent Bur Met & Geol, Shandong Zhengyuan Inst Geol Explorat, Jinan 264002, Peoples R China 2.Southwestern Architectural Design Inst, Chengdu 610081, Peoples R China 3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ju, JT ,Feng, JL,Zhao, X ,et al. Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China[J]. QUATERNARY RESEARCH,2016,85(2):279-289.
APA	Ju, JT .,Feng, JL.,Zhao, X .,Hu, ZG .,Chen, F .,...&Feng, JL .(2016).Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China.QUATERNARY RESEARCH,85(2),279-289.
MLA	Ju, JT ,et al."Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China".QUATERNARY RESEARCH 85.2(2016):279-289.