It is verified that this method is effective in dating of stratum and differentiating the boundary between two different layers in the erlian basin , northeast china 在实际应用中，运用古地磁极性变化和古纬度方法对二连盆地某地区地层定年和地层界面进行识别。
2.
But we do have convincing information obtained from magnetized mineral grains in rocks that tells us that geomagnetic polarity reversals have occurred a great many times in the history of the earth 但是我们确实从岩石破磁化的矿物颗粒中获得了令人信服的信息，这个信息告诉我们在地球史上曾发生了很多次地磁极性倒转。
