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 66 487 NO 15.8535 -99.1753 PACIFIC NORTH TRENCH PILLOW 03/24/1979 03/27/1979 NO NO MECHANICAL OR EQUIPMENT FAILURE OCEANIC NO NO NO NO NO NO YES NO 4764 182 182 21 120 65 10 2 2 171 172.0 4936 19 NO AGE GIVEN BROWN CLAY unk - 0000 unk - 0000 FINE GRAINED PLAGIOCLASE-OLIVINE PHYRIC-APHYRIC BASALT