leg site hole well logging latitude longitude ocean ocean hemisphere sea physographic feature hard rock feature ta td re-entry site survey site termination crust equipment test heat flow in situ pore water hydraulic piston core variable length hpc pressure core barrel punch core extended core barrel water depth(m) total penetration(m) drilled penetration(m) cored penetration(m) number of cores recovered meters recovered percent recovery meters of hard rock cored number of hard rock cores meters of hard rock recovered depth to basememnt(m) oldest sediment sub-bottom depth oldest sediment depth below sealevel oldest sediment core number oldest sediment age oldest sediment lithology oldest sediment lithology composition oldest sediment source oldest sediment heterogeneity oldest sediment hardness oldest comp1 oldest comp2 hard rock descriptions and comments 67 495 YES 12.4963 -91.0377 PACIFIC NORTH TRENCH 05/26/1979 05/30/1979 NO YES OBJECTIVE REACHED OCEANIC NO NO NO NO NO NO NO NO 4140 446 446 49 333 74 19 4 6.4 428 428.5 4569 46 NO AGE GIVEN NANNOFOSSIL-FORAMINIFER CHALK unk - 0000 unk - 0000 BASALT