Initial Reports Volume 191 Chapter 4, Table 7. Subdivision of the basalt pile, Hole 1179D. Basalt group Unit Depth (mbsf) Cored interval (m) Recovery (m) Olivine (%) I 1-8 375-396 21 14.5 0.2 II 9-24 396-446 50 18.4 III 25-48 446-475 29 19.4 >3