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兰州大学机构库  > 地质科学与矿产资源学院  > 期刊论文
题名: PLIOCENE-PLEISTOCENE CLIMATE CHANGE AT THE NE TIBETAN PLATEAU DEDUCED FROM LITHOFACIES VARIATION IN THE DRILL CORE SG-1, WESTERN QAIDAM BASIN, CHINA
作者: Wang, JY; Fang, XM; Appel, E; Song, CH(宋春晖)
收录类别: SCIE
出版日期: 2012-11
刊名: JOURNAL OF SEDIMENTARY RESEARCH
卷号: 82, 期号:11-12, 页码:933-952
出版者: SEPM-SOC SEDIMENTARY GEOLOGY
出版地: TULSA
英文摘要: The Pliocene-Pleistocene sedimentologic evolution of the western Qaidam Basin at the NE Tibetan Plateau was studied on the nearly thousand-meter-deep drill core SG-1 (spanning ca. 2.8-0.1 Ma), recovered from the Chahansilatu sub-depression with an average recovery rate of 95%. Lithofacies variation records the regional climatic change in relation to Asian drying and Tibetan Plateau uplift. Sedimentary textures and structures demonstrate a continuous slight coarsening and an increase of evaporites upward. We recognized five lithofacies: (1) gray-black laminated mudstone, (2) gray massive mudstone and siltstone, (3) bedded halite, (4) loose muddy halite, and (5) brownish-yellowish saliferous siltstone and mudstone, representing (1) semi-deep fresh to semi-brackish lake, (2) shallow brackish lake, (3) perennial saline lake, (4) playa saline lake, and (5) saline mudflat conditions, respectively. Variation of the lithofacies through the core demonstrates a clear trend of lake shrinkage since the late Pliocene and the final termination of the Chahansilatu paleolake. Accelerations of lake shrinkages are observed at ca. 2.5 Ma, 2.2 Ma, 1.6 Ma, 1.2 Ma, 0.9 Ma, 0.6 Ma, and 0.1 Ma. Our results suggest that the long-term stepwise drying of the Asian inland may have been forced by the change of the global ice volume.
作者部门: [Wang, Jiuyi ; Fang, Xiaomin] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100085, Peoples R China ; [Fang, Xiaomin ; Song, Chunhui] Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Peoples R China ; [Fang, Xiaomin ; Song, Chunhui] Lanzhou Univ, Key Lab Western Chinas Environm Syst MOE, Lanzhou 730000, Peoples R China ; [Appel, Erwin] Univ Tubingen, Dept Geosci, D-72074 Tubingen, Germany
通讯作者: Wang, JY (reprint author), Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100085, Peoples R China.
学科分类: Geology
文章类型: Article
所属项目编号: Knowledge Innovation Program of the Chinese Academy of Sciences [KZCX2-YW-Q09-04] ; (973) National Basic Research Program of China [2011CB403000] ; NSFC [40920114001, 41021001] ; Priority Programme "Tibetan Plateau: Formation, Climate, Ecosystems (TiP)" of the German Research Foundation (DFG) ; German Ministry of Education and Research (BMBF) [03G0705A]
所属项目名称: 国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划) ; 德国科学基金会项目
项目资助者: NSFC ; MOST ; MOE ; DFG
语种: 英语
DOI: 10.2110/jsr.2012.76
ISSN号: 1527-1404
WOS记录号: WOS:000314085400010
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/120617
Appears in Collections:地质科学与矿产资源学院_期刊论文

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Recommended Citation:
Wang, JY,Fang, XM,Appel, E,et al. PLIOCENE-PLEISTOCENE CLIMATE CHANGE AT THE NE TIBETAN PLATEAU DEDUCED FROM LITHOFACIES VARIATION IN THE DRILL CORE SG-1, WESTERN QAIDAM BASIN, CHINA[J]. JOURNAL OF SEDIMENTARY RESEARCH,2012,82(11-12):933-952.
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