(On Earth those north and south magnetic poles are almost aligned with the north and south geographic poles.) (sciencemag.org)
The shift could either be the result of plate tectonics (the individual motion of continental plates with respect to one another) or «true polar wander,» in which the Earth's solid land mass (down to the liquid outer core almost 1,800 miles, or 3,000 kilometers, deep) rotates together with respect to the planet's rotational axis, changing the location of the geographic poles, Mitchell said. (livescience.com)
point marking the tilted north and south axes of Earth's magnetic field, about 1,300 kilometers (800 miles) from the geographic poles. (nationalgeographic.org)