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 11 101 NO 25.1988 -74.4385 ATLANTIC NORTH RIDGE 04/24/1970 04/26/1970 NO YES MECHANICAL OR EQUIPMENT FAILURE NO NO NO NO NO NO NO NO 4868 76 58 18 2 16 88 76.0 4944 2 NO AGE GIVEN PYRITE RICH CLAY MINERAL RICH MUD DETRITAL TERRIGENOUS HETEROGENIC SOFT unk - 3300 CLAY MINERAL