Figure F28. AF demagnetization results for eight discrete samples, Site U1387. Right plots show the vector endpoints of paleomagnetic directions measured after each demagnetization treatment on an orthogonal projection (Zijderveld) plot. Squares = horizontal projections, circles = vertical projections. Left plots show intensity variation with progressive demagnetization. Orthogonal projection plots illustrate the removal of a steep drilling overprint by ~15–20 mT peak field AF demagnetization and a significant amount of ARM acquisition during high-peak field (>55 mT) AF demagnetization, with the remaining magnetization providing a well-resolved characteristic remanent magnetization.
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