| 大陆岩石圈的增厚及对流剥离对青藏高原隆升的影响 |
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| 引用本文： | 熊熊,许厚泽,傅容珊.大陆岩石圈的增厚及对流剥离对青藏高原隆升的影响[J].大地测量与地球动力学,1998(3). |
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| 作者姓名： | 熊熊 许厚泽 傅容珊 |
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| 作者单位： | 中国科学院测量与地球物理研究所，中国科学技术大学地球及空间科学系 |
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| 基金项目： | 国家自然科学基金,国家九·五攀登计划 |
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| 摘 要： | 伴随着印度板块对欧亚板块南缘的碰撞、挤压，青藏高原地壳及下伏地幔岩石圈的厚度增加了１倍。增厚岩石圈热结构的变化可导致高原海拨下降约１５００ｍ。其对流剥离并被较热的软流圈物质替代可用以解释青藏高原自８百万年或３百万年前开始的快速隆升。大陆岩石圈的增厚及热结构变化和对流剥离可能是青藏高原自９百万年前开始的夷平—快速隆升过程的主导控制因素。
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| 关 键 词： | 岩石圈 青藏高原 对流剥离 高原隆起 |
INFLUENCE OF THICKENING AND CONVECTIVE REMOVAL OF THE CONTINENTAL LITHOSPHERE UPON THE UPLIFT OF TIBETAN PLATEAU |
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| Xiong Xiong and Xu Houze.INFLUENCE OF THICKENING AND CONVECTIVE REMOVAL OF THE CONTINENTAL LITHOSPHERE UPON THE UPLIFT OF TIBETAN PLATEAU[J].Journal of Geodesy and Geodynamics,1998(3). |
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| Authors: | Xiong Xiong and Xu Houze |
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| Abstract: | Under the influence of the collision and compression of Indian plate with the southern margin of Eurasia, the thickness of crust and mantle lithosphere of Tibetan Plateau is thickened by a factor of 2. The variation of the thermal structure of thickened lithosphere might cause a 1 500 m descent of the elevation of the plateau. And the rapid uplift of Tibetan Plateau, commenced around 8 Ma or 3 Ma, can be explained by the convective removal and replacement by hotter asthenosphere of the thickened lithosphere. The variation of the thermal structure and convective removal of the thickened continental lithosphere may be the dominate factor in the procedure of planation-rapid uplift, commenced around 9 Ma, of Tibetan Plateau. |
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| Keywords: | lithosphere Tibetan Plateau convective removal uplift of plateau |
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