从地球的磁极通常不,准确地说,排队的地理极地轴,既然他们移动很多,可以paleomagneticists(这是一个词吗?)确定古代岩层的日期更精确地使用这个额外的信息吗?
反之亦然?(即。,does knowing, somehow, the precise date of formation of a rock(s), then measuring its exact direction of magnetism, not just polarity, tell you where the magnetic poles were at that time?)