Depth, m Lithology Organic carbon % Rock-Eval hydrogen index Ethane Propane n-Butane n-Pentane n-Hexane n-Heptane Benzene Toluene iso-Butane/n-Butane iso-Pentane/n-Pentane 40 Siltstone 0.57 19 388 1250 10400 17200 10500 4930 227 3570 0.49 0.65 50 Siltstone 0.55 48 771 1830 18500 27500 22000 16600 376 5670 0.53 0.74 51 Siltstone 0.34 49 311 375 260 2210 3100 2600 80 1040 0.64 0.36 52 Siltstone 0.27 38 329 376 382 2480 3380 2490 79 935 0.42 0.55 53 Siltstone 0.31 41 787 694 399 2160 2930 2030 98 881 0.47 0.5 54 Siltstone 0.24 32 562 541 259 393 1130 1660 84 289 0.62 0.79 55 Siltstone 0.21 49 261 324 250 161 138 113 65 176 0.9 0.98 56.5 Sandstone 0.21 24 863 131 542 308 198 273 235 719 0.64 1.1 58 Sandstone 0.14 19 162 174 120 128 216 139 128 288 0.71 0.52 61.5 Sandstone 0.15 43 272 239 125 84 73 46 50 124 1.15 0.99 73 Sandstone 0.56 30 133 90 40 35 23 20 16 42 0.87 0.72 80 Sandstone 0.26 70 606 405 274 208 199 517 121 107 0.73 0.95