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DOI	10.1016/j.yqres.2016.01.006
	Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China
	Feng, Jin-Liang; Ju, Jian-Ting; Chen, Feng; Hu, Zhao-Guo; Zhao, Xiang; Gao, Shao-Peng
通讯作者	Feng, JL (通讯作者)
发表日期	2016
ISSN	0033-5894
EISSN	1096-0287
起始页码	279
结束页码	289
卷号	85 期号:2
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.
关键词	GRAIN-SIZE DISTRIBUTION TIBETAN PLATEAU LOESS PLATEAU CLIMATE-CHANGE DUST PROVENANCE CHENGDU PLAIN DEPOSITS CLAY PROVINCE ORIGIN
英文关键词	Sichuan Basin; Tibetan Plateau; Alluvial sediment; Aeolian deposit; Compositional maturity; Isotopic tracing; Dust provenance; Pedogenic concretions; Sedimentary hiatus; Strata age
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000373661300010
来源期刊	QUATERNARY RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258715
推荐引用方式 GB/T 7714	Feng, Jin-Liang,Ju, Jian-Ting,Chen, Feng,et al. Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China[J]. 中国科学院青藏高原研究所,2016,85(2).
APA	Feng, Jin-Liang,Ju, Jian-Ting,Chen, Feng,Hu, Zhao-Guo,Zhao, Xiang,&Gao, Shao-Peng.(2016).Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China.QUATERNARY RESEARCH,85(2).
MLA	Feng, Jin-Liang,et al."Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China".QUATERNARY RESEARCH 85.2(2016).