Initial Reports, Volume 201 Shipboard Scientific Party Chapter 7, Table T5. Methane concentrations in headspace, Holes 1226B and 1226E. Notes: * = samples were not taken volumetrically. ND = not determined. Core, section, interval (cm) Depth (mbsf) Methane (20 min, 60 C) (ppm in headspace) Methane (24 hr, 22 C) (ppm in headspace) Methane (uM) 201-1226B- 1H-2, 0-5 1.5 2 0.07 1H-3, 0-5 3.2 1.92 0.08 2H-2, 0-5 5.9 2.98 0.26 2H-4, 0-5 8.9 3.62 0.36 2H-6, 0-5 11.9 2.76 0.32 3H-2, 0-5 15.4 4.69 0.64 3H-4, 0-5 18.4 4.82 0.63 3H-6, 0-5 21.4 4.03 0.7 4H-2, 0-5 24.9 5.66 0.78 4H-4, 0-5 27.9 5.81 0.85 4H-6, 0-5 30.9 4.63 0.93 5H-2, 0-5 34.4 5.99 0.86 5H-4, 0-5 37.4 8.3 1.27 5H-6, 0-5 40.4 5.62 1.12 6H-2, 0-5 43.9 7.24 1.06 6H-4, 0-5 46.9 6.9 0.99 6H-6, 0-5 49.9 7.95 1.71 7H-2, 0-5 53.4 8.36 1.14 7H-4, 0-5 56.4 10.63 1.52 7H-6, 0-5 59.4 8.98 1.82 8H-2, 0-5 62.9 12.3 1.93 8H-4, 0-5 65.9 9.37 1.3 8H-6, 0-5 68.9 8.98 2.01 9H-2, 125-130 73.65 9.3 1.4 9H-4, 0-5 75.4 11.92 1.92 9H-6, 0-5 78.4 9.24 2.27 10H-2, 0-5 81.9 10.88 1.64 10H-4, 0-5 84.9 13.82 2.29 10H-6, 0-5 87.9 10.72 2.54 11H-2, 0-5 91.4 11.18 1.91 11H-4, 0-5 94.4 10.59 1.63 11H-6, 0-5 97.4 8.14 1.94 12H-2, 0-5 100.9 13.28 2.15 12H-4, 0-5 103.9 12.36 2.1 12H-6, 0-5 106.9 8.95 2.05 13H-2, 0-5 110.4 12.98 2.13 13H-4, 0-5 113.4 13.7 2.29 13H-6, 0-5 116.4 8.53 2.26 14H-2, 0-5 119.9 12.46 2.23 14H-4, 0-5 122.9 10.52 1.86 14H-6, 0-5 125.9 7.56 1.99 15H-2, 0-5 129.4 12.01 2.35 15H-4, 0-5 132.4 10.92 2.01 15H-6, 0-5 135.4 6.24 1.46 16H-2, 0-5 138.9 10.68 1.81 16H-4, 0-5 141.9 12.31 2.57 16H-6, 0-5 144.9 7.33 1.79 17H-2, 0-5 148.4 10.92 2.18 17H-4, 0-5 151.4 11.65 2 17H-6, 0-5 154.4 6.87 1.57 18H-2, 0-5 157.9 12.62 2.43 18H-4, 0-5 160.9 13.93 2.5 18H-6, 0-5 163.9 6.88 1.58 19H-2, 0-5 167.4 11.84 2.18 19H-4, 0-5 170.4 12.22 2.22 19H-6, 0-5 173.4 7.28 1.87 20H-2, 0-5 176.9 12.18 2.35 20H-4, 0-5 179.9 12.44 2.34 20H-6, 0-5 182.9 7.17 1.76 21H-2, 0-5 186.4 10.39 1.89 21H-4, 0-5 189.4 15.13 3.17 21H-6, 0-5 192.4 7.51 1.84 22H-3, 0-5 196.2 8.54 1.58 22H-5, 0-5 199.2 10.25 1.93 22H-7, 0-5 202.2 8.55 2.16 23H-2, 0-5 205.4 9.33 2.26 23H-4, 0-5 208.4 11.97 2.18 23H-6, 0-5 211.4 11.29 1.9 24H-2, 0-5 214.9 12.58 2.33 24H-4, 0-5 217.9 13.41 2.96 24H-6, 0-5 220.9 5.39 1.41 25H-2, 0-5 224.4 14.73 2.66 25H-4, 0-5 227.4 10.87 1.93 25H-2, 0-5 230.4 7.19 1.91 26H-2, 0-5 233.9 12.33 2.5 26H-4, 0-5 236.9 11.7 2.2 26H-6, 0-5 239.9 6.68 1.67 27H-2, 0-5 244.9 12.28 2.63 27H-4, 0-5 247.9 13.56 2.61 27H-6, 0-5 250.9 8.84 2.21 28H-2, 0-5 254.4 12.27 2.24 28H-4, 0-5 257.4 12.79 2.26 28H-6, 0-5 260.4 7.73 1.98 29H-2, 0-5 263.9 12.25 1.95 29H-4, 0-5 266.9 12.38 1.92 29H-6, 0-5 269.9 7.94 1.69 30X-2, 0-5 273.4 10.67 1.58 30X-4, 0-5 276.4 9.89 1.56 30X-6, 0-5 279.4 5.04 1.06 31X-2, 0-5 283 9.79 1.38 31X-4, 0-5 286 7.42 1.04 31X-6, 0-5 289 6.76 1.34 32X-2, 0-5 292.3 7.49 1.06 32X-4, 0-5 295.3 10.24 1.52 32X-6, 0-5 298.3 7.24 1.41 33X-4, 0-5 305 4.35* ND 33X-6, 0-5 308 6.83* ND 34X-2, 0-5 311.7 8.78 1.22 34X-5, 0-5 316.2 13.93* ND 35X-2, 0-5 321.3 11.67 1.92 35X-6, 0-5 327.3 5.1 1.03 36X-4, 0-5 333.9 9.15 1.51 36X-4, 0-5 336.9 5.66 1.17 37X-3, 0-5 342 8.06 1.09 37X-4, 0-5 346.5 5.34 1.21 38X-3, 0-5 351.7 7.04 1.01 38X-6, 0-5 356.2 5.83 1.36 39X-3, 0-5 361.33 5.48 1.13 39X-4, 0-5 362.83 6.46 1.01 40X-1, 105-110 369.15 4.97 1.15 40X-2, 0-5 369.6 3.47* ND 41X-2, 105-110 373.65 4.69 1.04 41X-3, 0-5 374.1 5.62 0.92 43X-1, 135-140 381.35 5.19 0.81 43X-4, 0-5 384.4 4.15 0.99 45X-2, 0-5 398.7 3.64 0.5 45X-6, 0-5 404.7 5.81* ND 46X-2, 0-5 408.3 5.96 0.84 46X-6, 0-5 414.3 3.59* ND 47X-1, 125-130 417.65 3.77* ND 201-1226E- 13-H3, 0-5 253 10.48 1.85 13-H6, 0-5 257.5 12.08 2.02 14-H2, 130-135 262.3 11.19 1.61 14-H5, 0-5 265.5 12.43 2.05 15-H2, 130-135 271.8 13.94 2.43 15-H5, 0-5 275 13.14 2.29 16-H2, 130-135 281.3 15.28 2.48 16-H5, 0-5 284.5 14.49 2.32 17-H2, 130-135 290.8 13.98 2.28 17-H5, 0-5 294 11.54 1.76 18-H2, 130-135 300.3 12.38 1.83 18-H5, 0-5 303.5 11.57 1.71 19-H2, 130-135 309.8 10.86 1.59