Figure F2. A–F. Representative vector endpoint diagrams from AF demagnetization. Horizontal projection shown with solid red dots, vertical projection shown with open squares. Demagnetization steps shown in milliTeslas. A vertical drilling overprint is typically removed by 15 mT. When this overprint is very large, the smaller, complete diagram is shown to the right, and steps greater than or equal to 7.5 mT are shown at full size to the left. These examples are typical of samples used to determine polarity. Samples that did not decay to the origin (G) and samples with excessively high maximum angular deviation values (H) were not used.

Figure F2. A–F. Representative vector endpoint diagrams from AF demagnetization. Horizontal projection shown with solid red dots, vertical projection shown with open squares. Demagnetization steps shown in milliTeslas. A vertical drilling overprint is typically removed by 15 mT. When this overprint is very large, the smaller, complete diagram is shown to the right, and steps

7.5 mT are shown at full size to the left. These examples are typical of samples used to determine polarity. Samples that did not decay to the origin (G) and samples with excessively high maximum angular deviation values (H) were not used.