Figure F18. Plots of downhole variation of magnetic susceptibility and paleomagnetism data, Hole U1403A. Magnetization intensity, inclination, and declination are after 20 mT demagnetization and shown in geographic (sample) coordinates for the oriented advanced piston corer (APC) and extended core barrel (XCB) intervals. For discrete sample data, if the samples were analyzed by principal component analysis (PCA; Kirschvink, 1980), then directions are shown according to PCA declination and inclination. Otherwise, directions following 20 mT demagnetization are shown. Polarity: black = normal chron, white = reversed chron, gray = unidentified interval.
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