郯庐断裂带形成演化与大别–苏鲁造山带的关系探讨Study on the Relation between the Formation and Evolution of Tanlu Fault Belt and Dabie-Sulu Orogenic Belt
李洪奎, 陈莉, 韩廷宝, 耿科, 禚传源, 梁太涛
大别–苏鲁造山带, 郯庐断裂带, 板块碰撞, 左行平移, 体制转换Dabie-Sulu Orogenic Belt, Tan-Lu Fault Zone, Plate Collision, Left-Lateral Horizontal Displacement, Tectonic Configuration Transform
《Advances in Geosciences》, Vol.6 No.1, 2016-02-29
Dabie-Sulu orogenic belt is a HP-UHP metamorphic belt formed by the collision of Triassic North China plate and the Yangtze plate. Its formation and evolution have experienced three stages, such as intense collision stage, subduction stage and exhumation stage. In the late Triassic, final regis-tration has been completed. As a giant fault structure system in eastern China, Tanlu fault belt is controlled by dynamic background of transformation from Tethyan tectonic domain to the marginal Pacific tectonic domain, and subduction of the Pacific plate. Thus, large scale sinistral strike- slip happened and staggered Dabie-Sulu UHP metamorphic belt. The maximum distance of sinistral strike-slip is about 300 km. At the same time, development history of Tanlu sinistral shear strike-slip fault is divided into five development stages. It not only reappears complex history of transformation process from Tethys system to the Pacific system, but also reflects dynamics cha-racteristics of continental margin in Eastern China.