Table 4. Composition of headspace gases (ppm) from Site 1007. Site H Core Type Sec Depth C1 C2 C3 i C4 n C4 i C5 n C5 i C6 n C6 C1/C2 C1/C2+ H2S mbsf ppm-v ppm-v 1007 B 1 H 5 6.00 3 1007 B 2 H 6 17.00 3 1007 B 3 H 3 22.00 4 1007 B 4 H 6 36.00 13 1007 B 5 H 6 47.50 27 1 27 27 1007 B 6 H 4 54.00 37 2 19 19 275 1007 B 7 H 6 65.00 41 2 21 21 790 1007 B 8 H 5 73.00 65 4 16 16 2577 1007 B 9 H 5 82.50 56 3 19 19 41 1007 B 10 H 3 87.70 42 3 14 14 1007 B 11 X 4 96.20 44 3 15 15 42 1007 B 12 X 1 101.20 55 3 18 18 41 1007 B 13 X CC 110.60 23 1 23 23 1007 B 15 X 6 137.00 76 5 15 15 36 1007 B 16 X 4 143.00 103 6 17 17 4113 1007 B 17 X 5 153.40 65 4 16 16 2597 1007 B 18 X 1 158.25 87 5 17 17 15 1007 B 19 X 1 166.10 95 6 16 16 1007 B 20 X CC 175.40 113 7 16 16 1007 B 21 X CC 184.70 95 6 16 16 1007 B 23 X 5 209.10 43 2 22 22 42 1007 B 24 X 6 219.90 60 3 20 20 43 1007 B 25 X 6 229.00 88 6 15 15 48 1007 B 26 X 5 236.60 77 4 19 19 1007 B 27 X 5 245.80 83 4 21 21 1007 B 28 X 4 253.60 190 10 19 19 640 1007 B 29 X 2 259.90 91 5 18 18 1007 B 30 X 3 270.70 59 3 20 20 1007 B 31 X 1 276.90 197 11 18 18 1007 B 32 X 1 286.00 83 5 17 17 1007 B 33 X 1 295.10 105 5 21 21 1007 B 34 X 1 304.30 78 4 20 20 1007 B 36 X 1 322.80 24 1 24 24 1007 B 37 X 1 332.00 75 4 19 19 1007 B 38 X 2 342.53 66 3 22 22 1007 B 39 X 1 350.20 54 7 3 0.4 0.4 8 5 1007 B 40 X 1 359.40 56 4 14 14 1007 B 41 X 1 368.50 45 3 15 15 1007 C 6 R 3 352.86 94 6 1 1 1 16 10 1007 C 7 R 2 361.08 41 3 14 14 1007 C 8 R 1 369.30 25 1 25 25 1007 C 9 R 2 380.09 72 5 14 14 31 1007 C 10 R 2 389.94 110 7 1 0.3 0.5 1 16 11 19 1007 C 11 R 3 400.56 143 10 1 1 1 2 1 14 9 15 Site H Core T Sec Depth C1 C2 C3 i C4 n C4 i C5 n C5 i C6 n C6 C1/C2 C1/C2+ H2S mbsf ppm-v ppm-v 1007 C 12 R 3 409.97 90 6 1 0.3 1 2 0.5 15 8 21 1007 C 13 R 3 420.34 50 3 1 0.5 1 2 1 0.2 17 6 41 1007 C 14 R 3 429.49 46 3 0.7 0.5 0.7 2 0.5 0.2 0.2 15 6 14 1007 C 15 R 1 436.70 78 4 0.7 0.5 0.5 1 0.4 20 11 1007 C 16 R 2 448.96 97 7 2 2 2 10 2 0.9 0.9 14 4 1007 C 17 R 5 462.72 108 8 2 2 2 8 2 0.8 0.6 14 4 1007 C 18 R 1 466.95 74 7 3 2 3 10 2 0.8 0.6 11 3 1007 C 19 R 3 479.08 178 9 1 0.4 0.8 1 0.5 0.3 20 14 17 1007 C 20 R 2 487.17 469 29 9 4 4 11 2 0.8 0.9 16 8 18 1007 C 21 R 4 498.02 258 20 6 4 4 10 3 1 1 13 5 14 1007 C 22 R 1 504.10 111 7 3 1 1 4 0.3 16 7 1007 C 23 R 7 520.94 259 12 4 2 2 4 1 0.2 0.2 22 10 43 1007 C 24 R 4 527.53 274 14 7 4 4 10 2 0.6 0.6 20 6 10 1007 C 25 R 6 540.40 668 42 18 10 10 19 4 1 1 16 6 19 1007 C 26 R 6 548.31 413 24 11 7 6 13 3 1 1 17 6 13 1007 C 27 R 3 554.50 484 39 23 18 17 42 9 2 2 12 3 44 1007 C 28 R 4 565.45 256 14 7 4 4 7 2 1 0.4 18 6 5 1007 C 29 R 6 577.88 948 63 29 17 17 33 8 2 2 15 6 23 1007 C 30 R 4 585.16 678 52 23 18 18 34 8 2 2 13 4 22 1007 C 31 R 7 597.44 287 19 10 6 9 13 6 1 2 15 4 20 1007 C 32 R 2 601.70 122 6 3 2 2 3 1 0.2 0.3 20 7 41 1007 C 33 R CC 609.80 106 6 3 1 2 3 0.8 0.3 18 7 26 1007 C 34 R 2 620.92 1185 54 27 16 18 29 7 2 2 22 8 11 1007 C 35 R 2 630.29 1309 81 70 53 60 93 24 5 6 16 3 1007 C 36 R 3 641.34 1312 42 19 10 12 15 5 0.8 1 31 13 37 1007 C 37 R 4 651.97 2183 61 23 11 13 19 6 1 1.6 36 16 42 1007 C 38 R 3 660.65 1273 43 25 15 19 26 8 1 2 30 9 30 1007 C 39 R 3 670.31 2342 102 87 55 71 75 23 3 6 23 6 40 1007 C 40 R 1 677.10 950 29 19 11 15 16 5 1 1 33 10 40 1007 C 41 R 4 690.84 1391 44 29 18 26 30 10 1 3 32 9 42 1007 C 42 R 1 696.40 1671 51 33 21 30 33 12 1 3 33 9 23 1007 C 43 R 1 706.00 1095 29 17 9 13 14 5 0.5 1 38 12 33 1007 C 44 R 1 715.60 1118 31 19 11 17 20 8 1 2 36 10 1007 C 45 R 4 729.49 246 8 6 4 6 6 2 0.2 0.5 31 8 1007 C 46 R 3 737.78 439 10 5 3 4 5 2 0.2 0.5 44 15 25 1007 C 47 R 1 744.40 805 20 11 7 10 12 5 1 2 40 12 41 1007 C 48 R 1 754.10 1396 42 23 16 24 30 10 3 1 33 9 41 1007 C 49 R 2 765.14 3354 94 42 24 33 36 10 1 2 36 14 1007 C 50 R 3 776.32 1162 32 14 11 15 21 7 1 2 36 11 40 1007 C 51 R 3 785.98 1525 33 11 7 9 12 4 0.7 0.9 46 20 40 1007 C 52 R 2 794.04 1265 34 18 17 21 34 10 2 3 37 9 22 1007 C 52 R 4 796.81 801 20 10 12 10 14 5 0.8 1 40 11 47 1007 C 53 R 3 805.09 2757 72 30 24 28 40 12 2 3 38 13 41 1007 C 54 R 3 814.68 1965 88 75 84 100 15 46 10 13 22 5 41 1007 C 55 R 3 824.30 1863 67 36 24 27 29 8 1 2 28 10 40 1007 C 57 R 2 842.12 2606 68 38 27 33 46 13 3 3 38 11 25 Site H Core T Sec Depth C1 C2 C3 i C4 n C4 i C5 n C5 i C6 n C6 C1/C2 C1/C2+ H2S mbsf ppm-v ppm-v 1007 C 58 R 2 851.56 1932 59 40 29 34 49 13 3 4 33 8 27 1007 C 59 R 2 861.24 1232 25 10 5 6 8 2 0.4 0.5 49 22 42 1007 C 60 R 2 870.63 1802 44 23 11 13 17 4 0.9 1.1 41 16 40 1007 C 61 R 2 880.61 1347 31 14 8 7 24 3 0.6 0.7 43 15 45 1007 C 62 R 2 890.08 1270 40 27 14 14 23 6 1.4 1.7 32 10 22 1007 C 63 R 3 901.21 3123 55 17 7 5 8 2 0.5 0.7 57 33 43 1007 C 64 R 1 907.90 1357 34 19 8 7 11 3 1 1 40 16 44 1007 C 65 R 2 919.10 2096 58 27 13 11 23 6 2 2 36 15 30 1007 C 66 R 1 927.20 2084 42 11 3 3 5 1 0.4 0.4 50 32 1007 C 67 R 1 936.90 1262 26 12 4 4 8 2 1 1 49 22 23 1007 C 68 R 2 948.01 431 12 6 2 2 4 1 0.3 0.3 36 16 1007 C 69 R 1 956.10 1340 31 15 6 5 9 2 1 1 43 19 38 1007 C 70 R 1 965.70 2722 63 17 5 4 9 2 1 1 43 27 42 1007 C 71 R 1 975.30 1577 35 14 5 4 9 2 1 1 45 22 35 1007 C 72 R 4 989.32 1250 32 12 4 3 7 2 0.6 0.4 39 20 44 1007 C 73 R 3 997.49 1455 36 9 2 2 5 1 0.3 0.3 40 26 41 1007 C 74 R 4 1008.09 1290 38 13 5 4 8 2 0.6 0.5 34 18 31 1007 C 75 R 3 1016.46 1016 42 18 7 5 14 3 1 0.9 24 11 22 1007 C 76 R 3 1026.32 741 33 8 3 2 6 1 0.5 0.5 22 14 23 1007 C 77 R 1 1033.10 1551 57 12 3 2 6 1 0.5 0.3 27 19 42 1007 C 78 R 6 1050.46 636 30 7 2 1 8 1 0.4 0.3 21 13 30 1007 C 79 R 1 1052.40 542 22 5 1 1 3 1 0.3 0.2 25 16 1007 C 80 R 1 1062.10 464 27 3 0.3 1 0.2 0.1 0.1 17 15 1007 C 81 R 1 1071.70 942 51 9 2 1 6 1 1 0.5 18 13 19 1007 C 82 R 2 1082.76 1378 60 11 4 1 8 1 0.7 0.6 23 16 20 1007 C 83 R 5 1096.51 1111 67 12 4 2 10 1 0.9 0.8 17 10 29 1007 C 84 R 5 1106.13 780 25 3 0.5 0.3 1 0.2 0.2 0.1 31 26 23 1007 C 85 R 4 1113.48 315 11 3 5 0.3 2 0.3 0.2 0.1 29 14 1007 C 86 R 4 1123.87 683 25 6 2 1 4 1 0.4 0.3 27 17 1007 C 87 R 1 1129.50 889 39 4 1 1 3 0.5 0.3 0.2 23 18 1007 C 88 R 6 1146.47 898 27 3 1 0.5 2 0.3 0.2 33 26 1007 C 89 R 6 1157.45 573 19 2 0.3 1 0.3 30 25 1007 C 90 R 4 1162.64 1558 47 4 1 1 1 0.2 0.1 33 29 11 1007 C 91 R 6 1175.78 1033 40 6 2 1 5 1 0.4 0.3 26 19 23 1007 C 92 R 3 1180.60 854 24 3 0.7 0.6 2 0.3 0.2 36 28 41 1007 C 93 R 3 1190.28 760 25 5 2 2 4 0.8 0.3 0.2 30 19 33 1007 C 94 R 1 1198.35 540 27 8 6 4 10 2 0.9 0.9 20 9 9 1007 C 95 R 2 1207.21 1145 60 20 14 11 29 6 1 2 19 8 22 1007 C 96 R 3 1217.98 672 30 10 5 5 12 3 1 0.9 22 10 1007 C 97 R 2 1227.30 350 9 2 0.4 0.4 1 0.1 39 27 "Notes: C1 through C6 headings represent the alkanes: methane, ethane, propane, butane, pentane, and hexane." "Iso and normal configurations of butane, pentane, and hexane are designated with I and n prefixes" respectively. C1/C2 = the methane/ethane ratio and C1/C2+ = the ratio methane/(C2 to C6). H2S = hydrogen sulfide.