A map of the Caribbean Sea, showing the location of ODP Leg 165 sites and sites drilled during DSDP Leg 15. Summary of correlations between seismic stratigraphy, depths, logging units, lithologic units, and ages at Site 998.
Velocities shown are averages derived from the sonic velocity tool within each logging unit.
Although total depth at Hole 998B is 904.8 mbsf, Logging Unit 5 is only defined to 880 mbsf. The bottom of Hole 998B at 904.8 mbsf corresponds to 5 s twt, and volcanic basement lies at 5.15 s twt. Turbidite frequency and the median and total bed thicknesses vs. age at Site 998. The distribution of volcanic ash layers at four sites drilled during Leg 165, Site 999 on the Kogi Rise in the Colombian Basin, Site 998 on the Cayman Rise, Site 1000 on the upper Nicaraguan Rise, and Site 1001 on the Hess Escarpment. The data are not corrected for core recovery, as, in general, core recovery was excellent and close to complete in much of the cored section.