>There was a localized weakening of the geomagnetic field > geological proof This is an interesting theory. My question is: What methods are you using to tes

>There was a localized weakening of the geomagnetic field > geological proof This is an interesting theory. My question is: What methods are you using to test the change in magnetic fields? Put another way, what is your middle range theory from an archaeological perspective? How are you dating your samples? etc.