若说古生代的磁极移曲线具有明显的误差性,那么前寒武纪的磁极移曲线的误差就更为严重。这是因为前寒武纪岩石太古老,它们的原生剩余磁性差不多已经衰减殆尽,再加上前寒武纪的岩石缺少足够的化石控制,年龄也很难确定。此外,由于长期埋入地下并伴有热和化学的变化。确切地说,许多岩石本身形成于深部,只是现在随着广泛的侵蚀作用而出露于地表。另外,由于很少有构造控制,往往得假设岩石处在它的原来位置 If we say that the Paleozoic pole shift curve has obvious error, then the pre-Cambrian pole shift curve error is even more serious. This is because Precambrian rocks are too old and their native residual magnetism is almost depleted. Coupled with the pre-Cambrian rocks lacking adequate fossil control, the age is hard to pin down. In addition, due to long-term buried underground with thermal and chemical changes. Exactly, many rocks are themselves deep, only now exposed to the surface with a wide range of erosion. In addition, due to the lack of structural control, it is often assumed that the rock is in its original position