Matt Hamilton¹, Martin Chadima^2,3, Mike Jackson⁴ and Richard Douglas Elmore¹, (1)University of Oklahoma, School of Geosciences, Norman, OK, United States, (2)AGICO lnc, Brno, Czech Republic, (3)Institute of Geology of the Czech Academy of Sciences, Prague, Czech Republic, Prague, Czech Republic, (4)Institute for Rock Magnetism, Minneapolis, MN, United States