| 青藏高原隆升机制新模式 |
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| 引用本文： | 李德威.青藏高原隆升机制新模式[J].地球科学,2003,28(6):593-600. |
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| 作者姓名： | 李德威 |
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| 作者单位： | 中国地质大学地球科学学院,湖北武汉430074 |
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| 基金项目： | 中国地质调查局"1∶25万定结幅、陈塘区幅(国内部分)区域地质调查"项目(No.20001300009231). |
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| 摘 要： | 作为创建大陆动力学理论体系的最佳野外实验室的青藏高原,涉及当代固体地球科学前沿和热点的许多重大科学问题．迄今为止,包括板块构造在内的众多模式不能合理地解释青藏高原重要的地质和地球物理现象．本文从下地壳与中上地壳、造山带与沉积盆地的耦合作用出发,对青藏高原及邻区进行分尺度、分层块、分阶段的构造解析,提出青藏高原隆升的下地壳层流构造模式,认为青藏高原地壳增厚和构造隆升是晚新生代由于锡瓦利克盆地、塔里木盆地和四川盆地下地壳的热软化岩石大量流向青藏高原造成的．
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| 关 键 词： | 隆升机制 下地壳 层流构造 大陆动力学 青藏高原 |
| 文章编号： | 1000-2383(2003)06-0593-08 |
A New Model for Uplifting Mechanism of Qinghai-Tibet Plateau |
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| LI De-wei.A New Model for Uplifting Mechanism of Qinghai-Tibet Plateau[J].Earth Science-Journal of China University of Geosciences,2003,28(6):593-600. |
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| Authors: | LI De-wei |
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| Abstract: | The Qinghai-Tibet plateau, the best field laboratory for continental dynamics, involves many scientific problems in the frontiers and hotspots of modern earth sciences. Up to now, a lot of models including plate tectonics cannot rationally explain key geological and geophysical phenomena related formation and evolution of the plateau. According to a new idea involving coupling between the lower crust and upper crust, orogens and basins, this paper approaches the lower crust laminar tectonic model for uplifting mechanism of Qinghai-Tibet plateau by tectonic analysis of different scales, levels and blocks, multistage evolution. The crustal thicking and tectonic uplift of Qinghai-Tibet plateau result from the thermal softening rocks in the lower crust flow from the Himalayan foreland basin, Tarim basin and Sichuan basin to the plateau during Late Cenozoic era. |
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| Keywords: | uplifting mechanism lower crust laminar tectonics continental dynamics Qinghai-Tibet plateau |
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