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学科主题: 地理学::自然地理学
题名: Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China
作者: Feng, JL (Feng, Jin-Liang)1; Ju, JT (Ju, Jian-Ting)1; Chen, F (Chen, Feng)1, 2; Hu, ZG (Hu, Zhao-Guo)1, 3; Zhao, X (Zhao, Xiang)4; Gao, SP (Gao, Shao-Peng)1
通讯作者: Feng, JL
刊名: QUATERNARY RESEARCH
发表日期: 2016
DOI: 10.1016/j.yqres.2016.01.006
卷: 85, 期:2, 页:279-289
收录类别: SCI
合作性质: 国内
文章类型: 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.
语种: 英语
WOS记录号: WOS:000373661300010
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7743
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.China Cent Bur Met & Geol, Shandong Zhengyuan Inst Geol Explorat, Jinan 264002, Peoples R China
4.Southwestern Architectural Design Inst, Chengdu 610081, Peoples R China

Recommended Citation:
Feng, JL ,Ju, JT ,Chen, F ,et al. Identification of a late Quaternary alluvial-aeolian sedimentary sequence in the Sichuan Basin, China[J]. QUATERNARY RESEARCH,2016,85(2):279-289.
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文件名: V.85(2) 279-289 2016.pdf
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