| 塔里木盆地腹地新生界平行剖面的磁性地层研究:对塔克拉玛干沙漠形成演化的指示意义 |
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| 引用本文： | 王鑫,孙东怀,王飞,吴晟,李宝锋.塔里木盆地腹地新生界平行剖面的磁性地层研究:对塔克拉玛干沙漠形成演化的指示意义[J].地质力学学报,2010,16(4):412-422,411. |
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| 作者姓名： | 王鑫 孙东怀 王飞 吴晟 李宝锋 |
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| 作者单位： | 兰州大学西部环境教育部重点实验室, 甘肃 兰州 73000 |
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| 基金项目： | 国家杰出青年基金，国家重点基础研究发展计划，国家创新群体计划项目 |
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| 摘 要： | 选择了塔里木盆地腹地的红白山剖面, 对出露连续的晚新生代地层进行了高分辨率的磁性地层研究和古环境分析。结果表明:4.2Ma~3.4Ma, 塔里木盆地腹地的自然环境为干旱沉积平原, 气候条件相对湿热; 3.4Ma, 首次出现流动沙丘, 塔克拉玛干沙漠开始形成; 2.8Ma开始, 干旱化程度显著加强, 最终形成当今极度干旱的大型沙漠环境。在塔里木盆地的干旱化过程中, 副特提斯海的消亡、青藏高原的隆升和北极冰盖的演化均起到关键作用。
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| 关 键 词： | 塔里木盆地 塔克拉玛干沙漠 磁性地层 |
| 收稿时间： | 2010/4/20 0:00:00 |
PALAEOMAGNETIC STUDY OF THE LATE CENOZOIC STRATA IN THE CENTRAL TARIM BASIN: IMPLICATION ON THE EVOLUTION OF TAKELIMAKAN DESERT |
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| WANG Xin,SUN Donghuai,Wang fei,WU Sheng and LI Baofeng.PALAEOMAGNETIC STUDY OF THE LATE CENOZOIC STRATA IN THE CENTRAL TARIM BASIN: IMPLICATION ON THE EVOLUTION OF TAKELIMAKAN DESERT[J].Journal of Geomechanics,2010,16(4):412-422,411. |
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| Authors: | WANG Xin SUN Donghuai Wang fei WU Sheng and LI Baofeng |
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| Institution: | Key Laboratory of West China's Environmental System within Ministry of Education, Lanzhou University, Gansu Lanzhou 73000, China |
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| Abstract: | High resolution magnetostratigraphy study and paleoenvironment analysis were developed to the parallel section in the central of Tarim basin.The results indicate that dry land environment with relative warm and humid climate pattern dominant in the area between 4.2 ~ 3.4Ma.The oldest in-situ eolian dun sands formed in 3.4Ma,which in turn indicate the age of Taklimakan desert.The dry climate significant intensified by 2.8Ma,consequently forming the extremely dry environment like those of present.We argue that the retreat of Para-Tethys,uplift of Tibet Plateau and evolution of Northern Hemisphere glaciations are all played key roles in the desertification of interior Asian. |
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| Keywords: | Tarim Basin Taklimakan Desert Magnetostratigraphy |
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