Figure F48. Time/depth, sonic velocity, and seismic data from Site 1170. The time/depth relationship was calculated using P-wave velocities (Vp) from the core and logs. The sonic velocities are plotted against both depth and time. The two main spikes in Vp are at a greater two-way traveltime than the two reflectors seen in the seismic section, indicating that some of the core-derived sonic velocities may be underestimated.