Figure F23. A. Smoothed (21-cm Gaussian) spectral reflectance data (L*) for the upper 140 mcd from Holes 1172A (left), 1172B (middle), and 1172C (right). Holes 1172B and 1172C are offset from Hole 1172A by constants (10 and 20 L* units, respectively). B. Smoothed (21-cm Gaussian) magnetic susceptibility data for the upper 140 mcd from Holes 1172A (left), 1172B (middle), and 1172C (right). Holes 1172B and 1172C are offset from Hole 1172A by constants (5 × 10^-6 and 10 × 10^-6, respectively). Note that cores in Hole 1172A designated by dashed lines (Cores 189-1172A-5H through 10H) are severely disturbed by flow-in and were not utilized in constructing the composite section or sampling splice. These five Hole 1172A cores have only a cumulative composite correction added; no further alignment was attempted.