Kinematic Analysis of Plate Collision during the Assembly of Pangea in Late Paleozoic
详细信息
- 责任者：Li Jianghai (Key Laboratory of Orogenic Belts and Crustal Evolution ; Ministry of Education ; School of Earth and Space Sciences ; Peking University ; Beijing 100871 ; China) ; Li Weibo
- 刊名：Geological Review
- 出版年：2013
- 卷期：59(6)
- 关键词：泛大陆 ; Pangaea ; 板块碰撞 ; plate collision ; 运动学 ; kinematics
- 页码：p.1047-1059
- 图表：7 illus., 70 refs.
- 分类号：0300
- issnNo：ISSN0371-5736
- isbnNo：CN11-1952/P
摘要
Based on the method of paleo-plate reconstruction,we reconstruct the tectonic framework and the assembly process of Pangea by collecting and selecting the paleomagnetic data of global plates in Late Paleozoic.The moving path of various plates and blocks shows that the global plates converged to form Pangea with clockwise rotation as a whole. By analyzing the kinematic characteristics of single plate and the relative motion between different plates,we conclude that there was at least four patterns of collision during the assembly of Pangea:( 1)Rear-Ending Collision: if different plates move towards the same direction with different velocities,and the hinder plate moves faster than the plate in front,the so-called Rear-Ending Collision may occur,such as the closing of Rheic ocean( Hercynian orogenic belt),and Soren ocean( Soren mountain orogenic belt).( 2) Lateral Collision:if the moving path of two plates intersect with a large angle,the so-called Lateral Collision may occur,such as the collision between Baltica and Siberian,which caused the closure of Ural Ocean.( 3) Rubing Collision: two plates with the same moving direction or opposite moving directions rubbing with each other is the so-called Rubing Collision. For example,Tarim and North China moved towards opposite directions,which resulted in the collision in the lateral side. The ocean basin with ambiguous properties and strike-slip fault system are the characteristics of Rubing Collision.( 4) Congestion Collision: various large plates and small terranes converge with wide arc accretion and residual oceans is the so-called Congestion Collision,such as the Central Asian Orogenic Belt.
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