Apologies if this has been raised. Could not find what i was looking for. We are being given paleomagnetics as part of a basic science degree, and i was having problems getting what the evidence is for geomagnetic reversal. My tutor could not answer this question and tells me to move on to the current assignments. I keep coming back to this. Damn curiosity ! the idea for the reversal theory is that magnetite aggregations have Subchronozone distributions clearly reversing their domain orientations across the planet within the same time frame. However when i dig out papers i only find one section of the Atlantic where this is being explored and some mountain areas where domains went the opposite direction. at the same time we are being told that in these active mountain building areas the rock recycling could flip a crustal section 180 degrees anyway. Ok my point is this, i originally thought that the magnetic bands on earth wide sea floor spreading were marked black and white because the magnetite domain ordering had flipped 180 degrees. i.e. north becomes south and vice versa. And that was our earth wide time synchronized evidence. However it seems that the bands are really areas where the magnetic field has become weak or the domains shift by slight degrees not 180 degrees ! Is this correct ? If so this just tells us that there has been earth wide pole wander and not reversal. Am i missing the obvious or did i misinterpret what i read ? what is the evidence that clearly distinguishes regular earth-wide pole wander from actual regular 180 degree reversal ?