Figure F27. Orthogonal vector demagnetization diagrams for two samples from Hole 172-1062E illustrating the existence of a steep downward-directed drilling overprint and a smaller radial overprint. The steep overprint, which produces a strong deflection of the inclination (hollow squares), and the radial component, which produces a small deflection of the declination, are removed following about 10 to 20 mT AF demagnetization. In this example, the radial component appears to be outward directed (declination deflected toward 180) for the reverse polarity sample (top) and to be inward directed (declination deflected toward 0) for the normal polarity samples (bottom) (from Acton et al., 2002).