论文部分内容阅读
西准噶尔的构造以明显的北东向与东准噶尔相区别,也与阿尔泰褶皱带和天山褶皱带的NWW——EW向迵然不同。这种区域上的不协调性曾引起许多地质工作者的注意,我们认为,这是该区在B型俯冲作用以后,又独特地经历了A型俯冲作用的结果。A型俯冲作用的主要表观形式是推复构造。 西准噶尔推复构造是由许多逆掩断裂带形成推复界面,该推复体两侧各由一组断裂为边界并起应力调整作用。 该推复构造的形成机制是A型俯冲,这种俯冲在中华力西期西准噶尔造山运动之后,推复构追的逆掩作用开始于石灰纪晚期,强烈活动于二迭纪、三迭纪,一直可持续到侏罗纪。
The structure of West Junggar is distinct from the East Junggar in the obvious NE direction and also differs from the NWW - EW direction of the Altay Fold Belt and the Tianshan Fold Belt. This regional incompatibility has drawn the attention of many geologists, which we believe is the result of a type A subduction that uniquely experienced in the area after Type B subduction. The main apparent form of type A subduction is the pushback structure. The West Junggar pushover structure is formed by a number of thrusting fault zones that form a pushback interface that consists of a set of faults that act as boundaries and act as stress adjustments on either side of the pushback. The formation mechanism of the thrust structure is type A subduction. After this subduction, the thrust reversal of thrust structure occurred in the Late Limestone Period after the orogenic movement of West Junggar in the Chinese force, , Has been sustainable to the Jurassic.