Initial Reports, Volume 201 Shipboard Scientific Party Chapter 11, Table T4. Hydrogen concentrations, Holes 1230A and 1230C. Core, section, interval (cm) Depth (mbsf) Hydrogen (nM) Incubation temperature (degrees C) 201-1230A- 1H-1, 87-93 0.87 0.25 4 1H-2, 65-71 2.15 1.2 4 1H-3, 60-66 3.6 0.99 4 2H-2, 65-71 7.38 0.48 4 2H-5, 70-76 11.5 0.69 4 3H-2, 80-86 16.6 0.65 4 3H-5, 50-56 20.8 1.4 4 4H-5, 95-101 30.75 0.75 4 6H-2, 56-62 44.86 0.99 4 9H-5, 108-114 66.58 0.11 4 11H-4, 70-76 85 1.64 4 13H-3, 100-106 102.8 0.78 4 15H-6, 75-81 124.79 0.97 4 18H-3, 65-71 142.45 0.81 4 21H-3, 90-96 161.18 0.14 4 22H-2, 95-101 170.15 0.07 4 24H-2, 53-59 189.33 0.09 4 26H-1, 47-53 199.27 0.13 4 31X-2, 29-35 231.39 0.42 4 201-1230C- 2H-2, 55-60 6.55 0.42 4 2H-3, 45-50 7.95 0.76 4 2H-3, 85-90 8.4 1.04 4 2H-4, 30-35 9.3 1.19 4 2H-5, 35-40 10.9 0.54 4