just look at how they appear on a globe in the second picture i posted

they are a little off center, yes, but their position is related to the density of ferromagnetic materials in the crust... notice how the "south" one is more scattered?

the solidified rock of the crust is not mobile, and cannot move, if the magnetic field changes substantially, and this happens when you have a massive crossing of our field with the ambient galactic magnetic field

when magnetic flux lines oppose, they create a temporary zone of low magnetism, and in this case, the crustal permanent magnetic alignments will start to become stronger and will make it more likely that the crust is going to slip in order to line up the crustal field with the core field

this is what caused the Great Flood

north africa used to be a wet subtropical zone up to around 5000 years ago, and there was actually a couple of main veins of the Nile river, one of which passes straight by the Great Pyramids, which also have remnants of docks right where that would have been once