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Clay mineralogy of the upper Miocene-Pliocene red clay from the central Chinese Loess Plateau and its paleoclimate implications

文献类型：期刊论文

作者Wang, Qiansuo1; Song, Yougui2,3; Li, Yue2
刊名QUATERNARY INTERNATIONAL
出版日期2020-06-30
卷号552页码:148-154
关键词Clay minerals Red clay X-ray diffraction Chinese loess plateau Late miocene-pliocene
ISSN号1040-6182
DOI10.1016/j.quaint.2019.11.039
通讯作者Wang, Qiansuo(qiansuowang@outlook.com) ; Song, Yougui(syg@ieecas.cn)
英文摘要Study of clay mineral is one of effective methods for reconstruction of the paleoclimate and paleoenvironment. Here we represent clay mineral records from an upper Miocene-Pliocene red clay succession in the central Chinese Loess Plateau (CLP). On the basis of the existing age model, we employ X-ray diffraction and scanning electron microscopy to carry out clay mineral analyses, the results indicated that illite was the dominant clay mineral and the contents of smectite, chlorite and kaolinite were minor. From the analysis of contents of clay minerals, illite crystallinity, illite 5 angstrom/10 angstrom, smectite/(illite+chlorite) ratio, magnetic susceptibility, summer monsoon intensity and deep-sea delta O-18 values, the paleoclimatic evolution between 7.5 and 2.6 Ma can be divided into three intervals: interval I, from 7.5 to 6.9 Ma, it was cool and dry; interval II, from 6.9 to 4.1 Ma, was cool-warm oscillations; interval III, from 4.1 to 2.6 Ma, was significantly warm and humid stage of the seasonal climate conditions. The proxy records display a large amplitude transition in the later interval III, from 2.8 to 2.6 Ma, which implied an abrupt climate and environment variability. Through comparison the local and global paleoclimatic records, we found that clay minerals reflect regional paleoclimatic change superimposing global climatic records during the late Miocene-Pliocene period. We conclude that the regional tectonic activity and global cooling had affected East Asia Monsoon, which was characterized by the different temperature and precipitation in the central CLP.
WOS关键词EAST-ASIAN MONSOON ; GRAIN-SIZE ; EOLIAN SEDIMENTS ; TIBETAN PLATEAU ; EARTH FORMATION ; POLLEN RECORD ; PROVENANCE ; EVOLUTION ; SEQUENCE ; DEPOSITS
资助项目Natural Science Foundation of China (NSFC)[41807287] ; Natural Science Foundation of China (NSFC)[41572162] ; National Key Research and Development Program of China[2016YFA0601902] ; Shandong Provincial Natural Science Foundation[ZR2017BD017] ; Program of Geological Survey from Ministry of Land and Resources[DD20190294] ; Program of Geological Survey from Ministry of Land and Resources[DD20160261]
WOS研究方向Physical Geography ; Geology
语种英语
WOS记录号WOS:000573017600007
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构Natural Science Foundation of China (NSFC) ; National Key Research and Development Program of China ; Shandong Provincial Natural Science Foundation ; Program of Geological Survey from Ministry of Land and Resources
源URL[http://ir.ieecas.cn/handle/361006/15388]  
专题地球环境研究所_古环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Wang, Qiansuo; Song, Yougui
作者单位1.Luoyang Normal Univ, Coll Land & Tourism, Luoyang 471934, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Qiansuo,Song, Yougui,Li, Yue. Clay mineralogy of the upper Miocene-Pliocene red clay from the central Chinese Loess Plateau and its paleoclimate implications[J]. QUATERNARY INTERNATIONAL,2020,552:148-154.
APA Wang, Qiansuo,Song, Yougui,&Li, Yue.(2020).Clay mineralogy of the upper Miocene-Pliocene red clay from the central Chinese Loess Plateau and its paleoclimate implications.QUATERNARY INTERNATIONAL,552,148-154.
MLA Wang, Qiansuo,et al."Clay mineralogy of the upper Miocene-Pliocene red clay from the central Chinese Loess Plateau and its paleoclimate implications".QUATERNARY INTERNATIONAL 552(2020):148-154.

入库方式： OAI收割

来源：地球环境研究所

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