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古地磁方法应用于地质力学的研究领域,是李四光教授首先倡导的。古地磁方法可以测定岩石的原生剩余磁化强度矢量,进而求得该地质时期的地磁极位置与岩石形成时期标本产地的古纬度。由于地质年龄相同的岩石是在同一地磁场作用下受到磁化而获得原生剩磁,因此,在有限的区域内,同一地质年龄的岩石形成时所获剩磁偏角 D 的方向应基本一致。那么当岩石形成以后遭受构造运动的影响淡岩层产生相对的旋
The application of paleomagnetic method to the field of geomechanics is advocated by Professor Li Siguang first. The paleomagnetic method can be used to determine the primary remanent magnetization vector of the rock, and then obtain the geomagnetic pole position and the paleo-latitude of the origin of the rock during the geologic period. Since rocks with the same geological age are magnetized under the same geomagnetic field to obtain primary remanence, the direction of remanent declination D should be basically the same in a limited area when the rock of the same geological age is formed. Then when the rock is formed after the tectonic movement of the impact of shallow rock layer relative rotation