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 67 500 NO 12.6892 -90.9415 PACIFIC NORTH TRENCH 06/18/1979 06/22/1979 NO NO OBJECTIVE REACHED OCEANIC NO NO NO NO NO NO NO NO 6094 165 165 19 73 44 9 2 0.9 156.5 6251 17 NO AGE GIVEN NANNOFOSSIL FORAMINIFER CHALK unk - 0000 unk - 0000 BASALT