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  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院新生代地质与环境重点实验室
Clay mineralogy of an Eocene fluvial-lacustrine sequence in Xining Basin, Northwest China, and its paleoclimatic implications

文献类型：期刊论文

作者Hu, Bin1,2; Zhang, Chunxia1,2,3,4; Wu, Haibing1,2,4,5; Hao, Qingzhen1,2,4,5; Guo, Zhengtang1,2,4,5
刊名SCIENCE CHINA-EARTH SCIENCES
出版日期2019-03-01
卷号62期号:3页码:571-584
关键词Eocene Xining Basin Clay minerals Paleoclimate
ISSN号1674-7313
DOI10.1007/s11430-018-9282-8
英文摘要The Eocene was marked by significant cooling during which the global climate was transformed from greenhouse to icehouse conditions. Notable coeval events were the India-Asia collision and the retreat of the Paratethys Sea in Asia. The Eocene section of the long and continuous sedimentary succession of the Xining Basin in Northwest China is characterized by red mudstones with intercalated gypsum and muddy-gypsiferous layers. In this study, we conducted a semi-quantitative analysis of the mineralogy of bulk samples and the clay fraction using X-ray diffraction, with the aim of characterizing the Eocene climatic evolution of the northeastern margin of the Tibetan Plateau and inland Asia. We used a new pretreatment method to address the problem of extracting sufficient clay particles from the gypsum and gypsiferous layers. The bulk mineralogy is dominated by quartz, feldspar, calcite, gypsum and dolomite; and the clay mineralogy is dominated by illite, chlorite, and smectite (including irregular mixed-layer illite-smectite (I/S)). The variations of the clay mineral assemblages indicate the occurrence of alternations between warm humid conditions and hot dry conditions, with relatively high humidity during similar to 52-50, similar to 41.5-39 and similar to 35-34 Ma. Comparison of the results with the timing of Tibetan Plateau uplift, transgressions and regressions of the Paratethys Sea, and the marine oxygen isotope record suggest that the Eocene climatic evolution of the study region was driven fundamentally by global climate change.
WOS关键词OLIGOCENE CLIMATE TRANSITION ; INDIA-ASIA COLLISION ; TIBETAN PLATEAU UPLIFT ; MIDDLE EOCENE ; QAIDAM BASIN ; PALYNOLOGICAL RECORD ; NORTHERN MARGIN ; TARIM BASIN ; SEA RETREAT ; NW CHINA
资助项目National Natural Science Foundation of China[41722206] ; National Natural Science Foundation of China[41430531] ; National Natural Science Foundation of China[41690114] ; National Natural Science Foundation of China[41374072] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; International Cooperation Program of the Chinese Academy of Sciences[131C11KYSB20160061]
WOS研究方向Geology
语种英语
WOS记录号WOS:000460181500005
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences ; International Cooperation Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/90877]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Zhang, Chunxia
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Shandong Univ Sci & Technol, Coll Earth Sci & Engn, Qingdao 266590, Peoples R China
4.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Bin,Zhang, Chunxia,Wu, Haibing,et al. Clay mineralogy of an Eocene fluvial-lacustrine sequence in Xining Basin, Northwest China, and its paleoclimatic implications[J]. SCIENCE CHINA-EARTH SCIENCES,2019,62(3):571-584.
APA Hu, Bin,Zhang, Chunxia,Wu, Haibing,Hao, Qingzhen,&Guo, Zhengtang.(2019).Clay mineralogy of an Eocene fluvial-lacustrine sequence in Xining Basin, Northwest China, and its paleoclimatic implications.SCIENCE CHINA-EARTH SCIENCES,62(3),571-584.
MLA Hu, Bin,et al."Clay mineralogy of an Eocene fluvial-lacustrine sequence in Xining Basin, Northwest China, and its paleoclimatic implications".SCIENCE CHINA-EARTH SCIENCES 62.3(2019):571-584.

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来源：地质与地球物理研究所

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