Initial Reports Volume 185 Chapter 3, Table T16. Hole 801C cores sampled for in situ microbiological cultures. Notes: Temperature calculated from Larson et al. (1993). Microbiology analyses include: cultivation at 1 atm, epifluorescence microscopy, scanning electron microscopy, DNA extraction, in situ hybridization, and preservation at in situ pressure. Pressure samples were maintained at in situ pressure. Core, section, Depth Temperature Pressure interval (cm) Piece (mbsf) (°C) (atm) Analyses Sample description 185-801C- 14R-3, 106-110 9 607.8 24 620 Microbiology Altered interpillow material 16R-5, 84-87 10 629.7 25 622 Microbiology Altered interpillow material 18R-1, 122-135 16 643.4 25 624 Pressure Silicified breccia 19R-2, 13-20 3 653.3 26 625 Pressure Whole-rock sample 23R-1, 119-125 10 683.1 26 628 Microbiology Massive basalt 24R-1, 112-114 12 692.4 27 629 Pressure Quartz/celadonite fill 27R-3, 19-34 5 722.7 28 632 Microbiology Glass/hyaloclastite 28R-3, 86-90 8 732.4 28 633 Pressure Glassy margin 31R-5, 68-70 2E 762.7 29 636 Pressure Massive basalt with carbonate vein 34R-2, 95-97 2B 787.5 29 638 Pressure Carbonate vein 37R-1, 27-33 1 813.6 30 641 Microbiology Carbonate vein 37R-1, 65-66 1 814.0 30 641 Pressure Thick, brown calcite vein 42R-2, 70-71 3 861.9 31 645 Pressure Carbonate-cemented breccia 43R-1, 123-127 6 870.3 31 645 Pressure Quenched margin 48R-2, 24-28 1 918.2 33 650 Pressure Massive basalt with pyrite 51M-1, 31-32 1B 932.3 33 652 Pressure Quenched margin/hyaloclast 52M-1, 50-52 3 933.3 33 652 Microbiology Clay-filled vein