PLIOCENE-PLEISTOCENE CLIMATE CHANGE AT THE NE TIBETAN PLATEAU DEDUCED FROM LITHOFACIES VARIATION IN THE DRILL CORE SG-1, WESTERN QAIDAM BASIN, CHINA
Wang, JY; Fang, XM(方小敏); Appel, E; Song, CH(宋春晖); Wang, JY (reprint author), Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100085, Peoples R China.
收录类别SCIE
2012-11
发表期刊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
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
学科领域Geology
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]
资助项目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
DOI10.2110/jsr.2012.76
ISSN1527-1404
文章类型Article
语种英语
WOS记录号WOS:000314085400010
第一机构
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文献类型期刊论文
条目标识符http://ir.lzu.edu.cn/handle/262010/120617
Collection地质科学与矿产资源学院
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.
Recommended Citation:
GB/T 7714
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.
APA Wang, JY,Fang, XM,Appel, E,Song, CH,&Wang, JY .(2012).PLIOCENE-PLEISTOCENE CLIMATE CHANGE AT THE NE TIBETAN PLATEAU DEDUCED FROM LITHOFACIES VARIATION IN THE DRILL CORE SG-1, WESTERN QAIDAM BASIN, CHINA.JOURNAL OF SEDIMENTARY RESEARCH,82(11-12),933-952.
MLA Wang, JY,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".JOURNAL OF SEDIMENTARY RESEARCH 82.11-12(2012):933-952.
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