The tectonic motion is very intense in front belt of north Tianshan mountain, drape fault and so on very develop, and there occurred many times destruct earthquakes.

• 摘要北天山山前地带是构造运动十分强烈的地区，褶皱断裂等构造现象十分发育，这里曾发生过多次中强破坏性地震。