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在华北盆地南缘早古生代碳酸盐岩中 ,发现了包括交代假象和交代残余在内的一系列足以支持磁铁矿与黄铁矿之间发生过双向交代作用的确凿矿物学证据 ,甚至在同一个磁性矿物颗粒内 ,还辨认出方向完全相反而且是先后发生的 2种交代现象。磁铁矿 (铁磁性矿物 )和黄铁矿 (顺磁性矿物 )之间的双向交代会直接干扰古地磁数据 ,并影响以此为基础而开展的地块运动分析和古地理的重建。
In the Early Paleozoic carbonates in the southern margin of the North China Basin, a series of clear mineralogical evidence sufficient to support bi-directional metasomatism between magnetite and pyrite were found, including account of illusion and accountability, even at The same magnetic mineral particles, but also to identify exactly the opposite direction and has occurred in two kinds of account of the phenomenon. Two-way alternation between magnetite (ferromagnetic minerals) and pyrite (paramagnetic minerals) directly interfered with paleomagnetic data and affected the block movement analysis and palaeogeography reconstructed on the basis of this.