Figure F3. Downhole variation of magnetic inclination (A) before and (B) after AF demagnetization at 60 mT for Hole 1070A. Large squares = discrete samples taken from the center of the undisturbed parts of the working-half section. Parts of the recovered core had a significant amount of mechanical disturbance of the sediments; thus, AF demagnetization of the archive halves of cores was not always effective at removing the drilling induced overprint. Shaded area = the inferred magnetic polarity zone within the sepentinized peridotites.