In reality, the relative polar movement can either be polar wandering or continental drift ( or a combination of both ).
2.
Paleomagnetic evidence, both reversals and polar wandering data, led the revival of the theories of continental drift and its transformation into plate tectonics in the 1960s and 1970s.
3.
Sager and Koppers make no such extravagant claims for their new scenario for polar wandering, but they do say that their magnetic evidence from 27 long-vanished undersea volcanoes in the Pacific Ocean is persuasive.
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