Comparing with the lower cretaceous poles from the Ordos basin in the west of North China Block,we conclude that Haiyuan area could suffered a non-significant northward motion and rotation with respect to the stable Ordos basin since the lower Cretaceous.

• 通过对比华北地块鄂尔多斯盆地的早白垩世古地磁结果 ；表明采样地区自早白垩世以来相对于华北鄂尔多斯盆地未发生明显的构造旋转和纬度方向上的位移 .