龙门天关思过瀑简介

在这里可以见到“断层擦痕”。“断层”就是岩层破裂，并沿破裂面发生错动，（上下或平行错动），地质学上称为断层。

断层在错动过程中，断层面上常保存有摩擦而留下的痕迹，称为“断层擦痕”，擦痕有一定方向，可以推断断层错开的方向。

Sigou waterfall

The fault striae can be observed here. Fault is the rock breaking along a plane (or zone), the rock blocks below or above the plane would slide each other. In the sliding process, some directed striae would occur on the plane.