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岩石圈在高温高压岩浆自上而下冲击和地球自转速度变化影响下,发生断裂。深断裂是岩浆活动的主要通道。岩浆岩是辩别深断裂生成、发展的重要标志之一。根据岩浆活动特征分析,安宁河深断裂带生成于晋宁晚期——澄江期,具有多旋回活动性,以晚加里东——华力西期切割深度最大,在发展过程中曾发生东、西摆动和南、北来回跳跃运动。是一个由晋宁晚期至燕山期的比较陡直的张性深断裂带。
The lithosphere is fractured under the influence of high-temperature and high-pressure magma impact from top to bottom and the change of Earth’s rotation speed. Deep fault is the main channel of magmatic activities. Magmatic rocks are one of the important symbols to distinguish the formation and development of deep faults. According to the analysis of magmatic activity characteristics, the Anninghe deep fault zone was formed in the late Jinning-Chengjiang period with multi-cycle activity. The depth of the cut was the largest in the Late Caledonian-Haryax Period, and east and west occurred in the development process Swing and South and North jumping exercise. It is a relatively steep Zhang depth deep fault zone from Jinning to Yanshan period.