Digital Simulation on Convergence Tendency between Southwest Tienshan and Pamirs-West Kunlun Systems and Its Significance  

作　　者：邱祝礼 李海兵 裴军令 

机构地区：[1]Key Laboratory for Continental Dynamics of the Ministry of Land and Resources,Institute of Geology,Chinese Academy of Geological Sciences [2]Key Laboratory of Paleomagnetism,Institute of Geomechanics,Chinese Academy of Geological Sciences

出　　处：《Journal of China University of Geosciences》2009年第2期417-429,共13页中国地质大学学报（英文版）

基　　金：supported by the Basic Outlay of Scientific Re-search Work from the Ministry of Science and Technology of China (No. J0802);the National Natural Science Foundation of China (No. 40572122);Basic Geologic Project of China Geological Survey (Nos. 12010611811, 10210610105)

摘　　要：The collision between India plate and Eurasia continent 55 Ma ago caused the convergence between Southwest Tienshan and Pamirs tectonic systems, and conclusions by other researchers also suggest that the convergence will continue. Studies on the collision between these systems are helpful to the knowledge of the history and the tendency of the in-land tectonics since Cenozoic and are important in science and the real world as for environment changes, resources and energy reform, and forecast of earthquakes. For this reason, by means of digital modeling, on the basis of crustal shortening rate, crustal motion rate and data of physical properties of rocks, with the help of the FE （finite element） theory-based marc software, the United States, we address on the tendency of the convergence in this area in almost 10 Ma and draw a conclusion that the converged borders move northward and stretch southeast. The Southwest Tienshan will move more slowly and suffer less deformation than the Pamirs-West Kunlun （昆仑） system. The Pamirs-West Kunlun system will rotate counterclockwise while moving northward and extending westward.The collision between India plate and Eurasia continent 55 Ma ago caused the convergence between Southwest Tienshan and Pamirs tectonic systems, and conclusions by other researchers also suggest that the convergence will continue. Studies on the collision between these systems are helpful to the knowledge of the history and the tendency of the in-land tectonics since Cenozoic and are important in science and the real world as for environment changes, resources and energy reform, and forecast of earthquakes. For this reason, by means of digital modeling, on the basis of crustal shortening rate, crustal motion rate and data of physical properties of rocks, with the help of the FE （finite element） theory-based marc software, the United States, we address on the tendency of the convergence in this area in almost 10 Ma and draw a conclusion that the converged borders move northward and stretch southeast. The Southwest Tienshan will move more slowly and suffer less deformation than the Pamirs-West Kunlun （昆仑） system. The Pamirs-West Kunlun system will rotate counterclockwise while moving northward and extending westward.

关 键 词：Pamirs-West Kunlun Southwest Tienshan CONVERGENCE FE （finite element） method shortening rate. 

分 类 号：P548[天文地球—构造地质学]