Figure F1. A, B. Digital Parasound profile at Site 1233 (Hebbeln et al., 1995). Note in B the possibility of a hiatus near 65 mbsf. C. Analog 3.5-kHz profile acquired during approach to Site 1233. Significant reflectors (R1 to R8) are noted, with their apparent depths calculated assuming a sound velocity of 1500 m/s.