构造裂缝的形成和分布与局部构造作用(断层、褶皱作用)有关。
The forming and distribution of the structural fractures are related to the local tectonics (e. g. the rifting and the folding).
燕山早期运动主要为NW-SE向的挤压褶皱作用，断裂带走向开始弯曲变形；
Near NW-SE compressive folding occurred in early Yanshan orogeny, when it began to buckle.
MCT1原为向南逆冲的韧性断层，后遭受北北东向褶皱作用而转变为正断层。
The MCT1 was originally a south-vergent ductile thrust, which was later transformed into a normal fault after it underwent NNE-trending folding.
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