Figure F39. Example of progressive thermal demagnetization of a discrete sample (186-1150B-32R-2, 36-38 cm) (A) after 5 mT AF demagnetization after each thermal demagnetization step and (B) before 5 mT AF demagnetization was applied. The open circles are the projections of vector end points on the vertical plane; solid circles are the projections on the horizontal plane.