| 青藏高原与大陆动力学——地体拼合、碰撞造山及高原隆升的深部驱动力 |
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| 引用本文： | 许志琴,杨经绥,李海兵,张建新,曾令森,姜,枚.青藏高原与大陆动力学——地体拼合、碰撞造山及高原隆升的深部驱动力[J].中国地质,2006,33(2):221-238. |
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| 作者姓名： | 许志琴 杨经绥 李海兵 张建新 曾令森 姜 枚 |
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| 作者单位： | 中国地质科学院地质研究所,国土资源部大陆动力学重点实验室,北京,100037 |
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| 基金项目： | 原地矿部中法“松潘-甘孜造山带造山过程”项目
中法“东昆仑及邻区岩石圈缩短机制研究”项目
国土资源部“祁连山-阿尔金山地质演化及岩石圈剪切作用”
国家自然科学基金重点项目“祁连造山带的组成及造山过程”及国土资源部科技专项“青藏高原的碰撞造山及其效应”课题“青藏高原地体边界及岩石圈剪切断裂”的资助 |
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| 摘 要： | 运用地体和地体活动论观点,提出青藏高原结构划分的新方案;强调青藏高原的形成经历了新元古代以来长期活动的过程,青藏高原是一个“非原地”诸多地体会聚、拼合以及经历复合碰撞造山的“造山的高原”;大型走滑断裂在青藏高原形成中起着地体相对位移、侧向挤出、移置及使高原几何形态扭曲的作用。提出青藏高原隆升的“南缘超深俯冲(>600km)、北缘陆内俯冲、腹地深部热结构及岩石圈范围内的向NE右旋隆升”的多元驱动力机制。
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| 关 键 词： | 青藏高原 非原地地体拼合 复合碰撞造山 走滑构造 多元驱动力 |
| 文章编号： | 1000-3657（2006）02-0221-18 |
| 收稿时间： | 2006-03-14 |
| 修稿时间： | 2006-03-142006-03-20 |
The plateau and continental dynamics: A QinghaiTibet review on terrain tectonics, collisional orogenesis, and processes and mechanisms For the rise of the plateau |
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| XU Zhiqin,YANG Jingsui Haibing,LI,ZHANG Jianxin,ZENG Lingsen,JIANG Mei.The plateau and continental dynamics: A QinghaiTibet review on terrain tectonics, collisional orogenesis, and processes and mechanisms For the rise of the plateau[J].Chinese Geology,2006,33(2):221-238. |
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| Authors: | XU Zhiqin YANG Jingsui Haibing LI ZHANG Jianxin ZENG Lingsen JIANG Mei |
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| Institution: | Key Laboratory for Continental Dynamics, MLR, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China |
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| Abstract: | Recent studies on the compositions and structures of multiple terrains within the Qinghai-Tibet plateau have offered us an opportunity to examine how this plateau was assembled in the context of terrain tectonics. The formation of this plateau resulted from long-term tectonic activities since the late Paleozoic which is represented by (1) convergence and welding of a number of exotic terrains, and (2) collision induced " orogenic plateaux" and has reached its climax in the Cenozoic. Large-scale strike-slip faults (commonly act as terrain boundary faults) has played a central role in controlling the relative offset, magnitude of lateral extrusion, and the geometry of these terrains. The final assembly and rise of the Qinghai-Tibet plateau may result from a combination of contemporaneous processes, e.g. super-deep subduction (>600 km) at its southern margin, intra-continental subduction at its northern margin, in-land deep thermal processes, and NE-trending right-lateral uplift of mantle lithosphere. |
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| Keywords: | Qinghai-Tibet Plateau "non-in-situ" terrane assembly compounding-collisional orogeny strike-slip structure multi-component driving force |
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