应用Riedel剪切破裂判定走滑断层的运动学性质——以落水冲断层为例

Using riedel shear fracturedetermines for kinematics property of strike-slip faults——an example from Luoshuichong fault

通过野外地质调查,落水冲断层为压扭性走滑断层,断层旁侧具有判断走滑运动方向的R、P剪切与T张裂发育,根据作为走滑断层运动学指示器的R、P面与主断层的关系,可以判定落水冲断层为右行走滑断层。因此通过对断层带及其旁侧因剪切应力作用所形成的一系列破裂分析反演其运动学性质,有利于认识该区走滑断层运动学性质,为分析同类型走滑断层运动学特征具有一定的借鉴和参考意义。

The field geological investigation show that the Luoshuichong fault have convergent strike-slip fault. It is lateral have to judge the direction of motion development of the R, P shear and T tension fracture. According to as the strike-slip fault kinematic indicator that the relationship between R and P shear and main strike-slip fault can be determined for the right lateral strike-slip fault. Therefore, through the fault zone and its lateral have a series of ruptures formed by shear stress analysis inversion of its kinematic property, is conducive to understanding the strike-slip faults kinematic properties, as well as for the analysis of the same type strike-slip faults kinematics feature has some reference significance.