Figure F17. Plots of natural remanent magnetization (NRM) after AF demagnetization to 80 mT. A. Sample 347-M0060A-24H-2, 9 cm; 61.79 mcd. B. Sample 347-M0060A-15H-3, 26 cm; 33.77 mcd. C. Sample 347-M0060A-48H-1, 131 cm; 118.02 mcd. Category 1 and 2 vectors trend toward the origin, whereas Category 3 vectors veer into a plane perpendicular to the last demagnetization axis, which is a sign of gyroremanent magnetization acquisition. Open squares = vertical, solid squares = horizontal.
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