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根据断裂带切割变质围岩中各期变形旋回形成的褶皱,断裂带中的断层岩为形成于地表条件下的角砾岩和碎裂岩并切割围岩中各种糜棱岩带,构成上侏罗统火山岩盆地的边界断层等特征,磨子潭-晓天断裂应是晚侏罗世形成于地表条件下的断层;根据断层附近上侏罗统砂岩夹层中的裂隙焊接,磨子潭-晓天断裂在晚侏罗世形成后,还有两次较强烈的活动。据地表、钻探和地震资料,断层面向北倾,倾角向深部变缓。
According to the fault zone, the fold formed by various deformation cycles in the metamorphic surrounding rock is cut. The fault rocks in the fault zone are breccias and cataclasites formed under the surface conditions and cut various mylonite belts in the surrounding rock. Jurassic volcanic basin boundary faults and other characteristics, the Mozi Lake - Xiaotian fault should be formed in the late Jurassic under the surface conditions of the fault; according to the fault near the Jurassic sandstone interlayer in the gap welding, Mozi Lake - After the Xiaotian Fault was formed in the Late Jurassic, there were two more intense activities. According to the surface, drilling and seismic data, the fault faces northward and the dip slowly toward the deep.