华北东部印支期构造变形研究

Tectonic Deformation of Indosinian Period in Eastern Part of North China

针对华北东部印支期构造变形问题 ,进行了野外调研和室内编图工作 ;讨论了渤海湾盆地及燕山构造带、胶南隆起、辽西、辽东等地区印支期构造运动的表现、变形特征、变形期次 .结果表明 ,研究区印支期构造变形以形成近东西向大型褶皱 -冲断带为特征 ,变形期次分为早期 ( T1-2 )和晚期 ( T3 )两个阶段 .变形机制来源于西伯利亚板块、华北板块、华南板块间的碰撞。

Aiming at the problem of tectonic deformation of Indosinian period in eastern part of North China , the field investigation as well as the map compiling was carried out; The appearance and characteristic of deformation of Indosinian period in Bohai Bay basin, Yanshan tectonic belt ,Liaoxi, Liaodong, and Luxi areas were discussed. The result shows that, in the research area, the tectonic deformation of Indosinian period is characterized by a nearly E W trending folds and thrusts at large scale and that the phase of Indosinian movement is divided into an early period (T 1-2 ) and a late period (T 3) .The mechanism of deformation is the convergence and collision among Siberia plate, North China plate, and South China plate.