Figure 6. Representative vector end-point diagram showing the results of thermal and alternating field demagnetization for samples from the "altered" upper part of the peridotite section. Normal polarity of magnetization is revealed in all samples. A. Sample 149-899B-16R-3, 57-59 cm. B. Sample 149-899B-21R-4, 77-79 cm. C. Sample 149-899B-20R-2, 112-114 cm. D. Sample 149-899B-21R-2, 75-77 cm. Conventions as in Figure 5. Sample 149-899B-20R-2, 112-114 cm, (C) was specifically taken from a heavily veined core section, whereas Samples 149-899B-16R-3, 57-59 cm, (A) and 149-899B-21-2, 75-77 cm, (D) were from relatively vein-free pieces.