摘要
研究区逆冲推覆构造属扬子陆块的盖层构造。在其发育和扩展过程中伴随着重力滑移构造的产生,并于构造调整期或应力释放阶段产生逆冲反转作用,铸成一定几何学、运动学特征的逆冲一推覆构造组合。文中除对逆冲推覆构造作较详的几何学描述外,采用位移─距离图解和剖面平衡技术对其运动状态和过程进行讨论,认为马颈坳─王家塘逆冲断层和磷肥厂─翁下逆冲推覆断层具有不同的扩展速率和滑移速率,反映出同一体制下的应变差异,从而形成区内各具特色的逆冲推覆构造。
The thrust structures in the study area occur in the cover ofYangtze landblock, and are formed and developed with the generation of gravitysliding structures and thrusting and reverse rotating during structural adjustmentof stress release. They, therefore, are thrust-nappe structures and display certain geometrical and kinetic characteristics. Besides describing geometrically them in detail, the paper will discuss their kinetic state and process, using displacement-distance diagrams and sectional equilibrium technique. It is suggested that Majingao-Wangjiatang thrust fault differs from Linfeichang Wengxia thrust fault in their expansional and sliding rates, reflecting a strain difference in the same dynamic system, thus to form the thrust-nappe structuresthat each has itself characteristics.
出处
《贵州地质》
1996年第3期225-236,共12页
Guizhou Geology