| 与陆-陆碰撞作用相关的盆-山构造数值模拟 |
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| 引用本文： | 崔军文,史金松,李朋武,张晓卫,郭宪璞,丁孝忠.与陆-陆碰撞作用相关的盆-山构造数值模拟[J].地球学报,2006,27(1):13-24. |
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| 作者姓名： | 崔军文 史金松 李朋武 张晓卫 郭宪璞 丁孝忠 |
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| 作者单位： | 中国地质科学院地质研究所，北京，100037;河海大学，江苏南京，210024;中国地质科学院地质研究所，北京，100037;中国地质科学院地质研究所，北京，100037;中国地质科学院地质研究所，北京，100037;中国地质科学院地质研究所，北京，100037 |
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| 基金项目： | 国家“305”项目(编号:96-915-06-04); 国家自然科学基金项目(编号:19972072); 国土资源部大陆动力学开放实验室项目(编号:9812) |
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| 摘 要： | 陆-陆碰撞作用是导致大陆岩石圈各种地质作用发生的最重要的驱动机制,如何识别和标定陆-陆碰撞作用,特别是其四维时空演化,是地学界长期以来关注和研究的重点。陆-陆碰撞作用的主要表现形式为下伏地块沿陆内俯冲带的强烈下插(俯冲)和上覆地块沿陆内俯冲带的不断仰冲(逆冲扩展),在垂直俯冲带方向出现盆-山相间的构造格局和MOHO的弯曲、错断。通过数值模拟计算,详细论述了在仰冲(逆冲扩展)和俯冲作用过程中,盆地坳陷、山体抬升、MOHO上抬和下坳等各种位移量和位移速率之间的耦合关系及盆地中心的迁移规律。说明它们有可能成为判断或标定陆-陆碰撞作用的一种标志或尺度。
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| 关 键 词： | 陆-陆碰撞作用 陆内俯冲带 盆-山构造 数值模拟 构造界面 位移 |
Numerical Modeling of Basin-Range Tectonics Related to Continent-Continent Collision |
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| CUI Jun-wen,SHI Jin-song,LI Peng-wu,ZHANG Xiao-wei,GUO Xian-pu and DING Xiao-zhong.Numerical Modeling of Basin-Range Tectonics Related to Continent-Continent Collision[J].Acta Geoscientia Sinica,2006,27(1):13-24. |
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| Authors: | CUI Jun-wen SHI Jin-song LI Peng-wu ZHANG Xiao-wei GUO Xian-pu and DING Xiao-zhong |
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| Institution: | Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037;Hehai University, Nanjing, Jiangsu, 210024;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037;Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 |
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| Abstract: | Continent-continent collision is the most important driving mechanism for various geological processes in the continental lithosphere. The recognition and determination of continent-continent collision, especially its four-dimensional temporal and spatial evolution, is a subject which has long aroused concern and research interest in geological communities. Continent-continent collision mainly finds expression in strong underthrusting (subduction) of the underlying block along an intracontinental subduction zone and continuous obduction (thrusting propagation) of the overlying block along the intracontinental subduction zone, the formation of a basin-range tectonic framework in a direction perpendicular to the subduction zone and the flexure and disruption of the Moho. On the basis of numerical modeling, the authors discuss in detail the couplings between various quantities and rates of displacement caused by basin subsidence, mountain uplift and Moho updoming and downflexure during obduction (thrusting propagation) and subduction and the migration pattern of basin centers. They are probably indications or criteria for judgment or determination of continent-continent collision. |
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| Keywords: | continent-continent collision intracontinental subduction zone basin-range tectonics numerical modeling tectonic interface displacement |
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