断层传播褶皱模型及其应用的研究  

Research of Fault Propagation Fold Model and Its Application

作　　者：宋淑霞[1] 

机构地区：[1]西安石油大学,西安710065

出　　处：《四川地质学报》2017年第1期16-18,共3页Acta Geologica Sichuan

摘　　要：断层传播褶皱是断层相关褶皱中最重要的类型之一,它一般形成于逆冲断层中。当断面的扩张速度小于滑移速度时,逆冲岩块运动较快,内部聚集应变能,而在断层面扩张的前方就会形成褶皱加以调节,这类褶皱称为断层传播褶皱。经过许多的地质学家研究认为这是沿断层面向上变宽的三角形分布式剪切的调节过程,而三角剪切区主要由断层的上顶点所决定。这种褶皱最早是Hardy和Ford发现并且成功的建立了此种褶皱的几何数字模拟模型。由于断层传播褶皱的形成主要受三角剪切区的控制,因此主要研究三角剪切区。Fault propagation fold is one of the most important fault-related folds which is generally formed in thrust fault.The study suggests that this fold was formed during the regulation process of the triangular distributed shearing widen ascendingly along the fault surface.This fold was discovered by Hardy and Ford who firstly established its digital simulation geometric model.Due to the fault propagation folds controlled mainly by triangle shear zone,this paper mainly study the triangle shear zone.

关 键 词：断层传播褶皱 三角剪切区 运动学 

分 类 号：P542[天文地球—构造地质学]