Figure F19. AF demagnetization of a typical discrete sample (178-1098C-1H-5, 44 cm). A. Orthogonal projection of the end-points of the remanence vector. Open and solid symbols represent the vertical and horizontal projections, respectively. The steeply inclined drill-string overprint was removed after AF demagnetization at 10 mT. B. Change in the intensity of remanence during AF demagnetization. C. Equal-area projection of the remanence vector during AF demagnetization.