Initial Reports Volume 188 Chapter 3, Table 8. Concentration of C1, C2, and C3 obtained by the headspace gas technique, Site 1165. Note: C1 = methane, C2 = ethane, C3 = propane. Core, section, interval (cm) Depth (mbsf) C1 (ppmv) C2 (ppmv) C3 (ppmv) C1/C2 188-1165B- 1H-5, 0-5 6.00 2 2H-5, 0-5 12.80 2 3H-5, 0-5 22.30 5 4H-5, 0-5 31.80 10 5H-5, 0-5 41.30 15 6H-5, 0-5 50.80 24 8H-5, 0-5 69.80 48 9H-5, 0-5 79.30 72 10H-5, 0-5 88.80 105 11H-5, 0-5 98.25 157 13H-5, 0-5 112.30 247 14H-5, 0-5 121.65 307 15H-5, 0-5 128.30 336 16H-5, 0-5 133.54 432 17H-5, 0-5 144.30 424 19X-5, 0-5 149.80 1,009 2 505 20X-5, 0-5 162.20 2,082 2 1,041 21X-5, 0-5 170.30 4,322 7 617 22X-5, 0-5 181.50 7,548 5 1,510 23X-5, 0-5 191.10 11,162 11 1 1,015 24X-5, 0-5 196.20 7,872 4 1,968 27X-5, 0-5 228.00 16,220 8 2,028 28X-5, 0-5 239.10 22,093 11 2,008 30X-5, 0-5 252.40 1,354 1 1,354 32X-5, 0-5 265.00 27,678 12 2,307 33X-5, 0-5 279.10 25,838 14 1 1,846 34X-5, 0-5 287.20 27,109 12 2,259 35X-5, 0-5 296.50 17,211 8 2,151 36X-5, 0-5 305.80 24,623 11 2,238 37X-5, 0-5 315.10 21,428 9 2,381 38X-5, 0-5 324.70 12,952 6 2,159 39X-5, 0-5 334.40 23,529 12 1,961 40X-5, 0-5 342.05 14,125 6 2,354 41X-5, 0-5 352.10 16,294 8 2,037 42X-5, 0-5 363.23 31,952 15 2,130 43X-5, 0-5 372.90 23,396 11 2,127 44X-5, 0-5 382.50 14,869 7 2,124 45X-5, 0-5 392.10 24,142 11 2,195 46X-5, 0-5 401.70 21,963 10 2,196 48X-5, 0-5 420.90 34,294 14 1 2,450 49X-5, 0-5 430.60 26,414 12 1 2,201 50X-5, 0-5 440.20 32,738 13 2,518 51X-5, 0-5 448.30 33,768 14 2,412 52X-5, 0-5 456.40 13,634 6 2,272 53X-5, 0-5 469.00 18,891 8 2,361 54X-5, 0-5 478.60 8,631 5 1,726 55X-5, 0-5 486.80 35,022 18 1,946 56X-5, 0-5 494.85 7,557 9 840 57X-5, 0-5 504.40 60,202 57 1,056 58X-5, 0-5 514.00 34,462 41 841 59X-5, 0-5 526.72 47,276 52 909 60X-5, 0-5 533.30 29,802 33 903 62X-5, 0-5 552.60 32,822 39 842 64X-5, 0-5 571.80 49,849 97 514 65X-5, 0-5 578.40 34,434 64 538 66X-5, 0-5 594.00 82,495 140 6 589 68X-5, 0-5 607.30 34,942 69 3 506 72X-5, 0-5 636.20 35,934 70 2 513 73X-5, 0-5 645.80 26,329 50 2 527 74X-5, 0-5 658.40 18,994 43 442 75X-5, 0-5 665.00 7,232 19 381 188-1165C- 1R-5, 0-5 60.00 41 2R-5, 0-5 677.48 38,603 79 489 3R-5, 0-5 687.74 29,329 48 611 5R-5, 0-5 707.08 47,097 116 406 6R-5, 0-5 716.56 29,069 90 323 7R-5, 0-5 724.91 33,070 97 341 8R-5, 0-5 735.65 40,031 114 351 9R-5, 0-5 745.86 93,825 215 436 10R-5, 0-5 754.00 51,772 97 534 11R-5, 0-5 765.10 77,722 201 387 12R-5, 0-5 774.70 102,030 275 371 13R-5, 0-5 781.30 88,575 250 354 14R-5, 0-5 791.00 74,576 236 316 15R-5, 0-5 803.60 81,692 238 343 16R-5, 0-5 813.00 44,822 154 291 17R-5, 0-5 821.00 73,676 243 2 303 18R-5, 0-5 835.10 62,919 236 2 267 19R-5, 0-5 843.20 45,506 149 2 305 20R-5, 0-5 851.40 36,529 152 4 240 21R-5, 0-5 856.50 29,056 130 3 224 22R-5, 0-5 870.70 39,667 165 8 240 23R-5, 0-5 880.30 60,171 225 11 267 24R-5, 0-5 886.90 62,641 216 9 290 25R-5, 0-5 895.10 76,328 271 13 282 26R-5, 0-5 906.20 61,983 200 11 310 27R-5, 0-5 917.30 42,386 166 15 255 28R-5, 0-5 928.50 60,355 259 26 233 29R-5, 0-5 937.70 24,450 73 4 335 30R-5, 0-5 947.30 66,472 302 41 220 31R-5, 0-5 957.00 37,528 147 18 255 32R-5, 0-5 962.10 54,220 255 48 213 34R-2, 0-5 981.30 72,177 279 38 259 35R-5, 0-5 995.50 52,365 243 37 215