Table T7. Concentration of light hydrocarbon and nonhydrocarbon gases in VAC samples of core gas voids, Holes 1249B, 1249C, and 1249F.
Core, section, interval (cm)
Depth (mbsf)
C1
(ppmv)
C2 (ppmv)
C3 (ppmv)
i-C4 (ppmv)
n-C4 (ppmv)
i-C5 (ppmv)
CO2 (ppmv)
O2 (ppmv)
N2
(ppmv)
C1/C2
204-1249B-










2A-1, 70-71 30.60 840,995 1,573 75.0 18.0 11.9 7.0 17,201 7,921 109,309 535
4A-1, 74-75 39.64 943,658 2,047 79.0 13.0 7.8
15,226 8,566 27,109 461
204-1249C-










1H-1, 60-61 0.60 933,178 1,243 8.4





751
2H-1, 130-132 3.30 972,741 1,346 4.9


7,909 2,427 2,457 723
4H-5, 75-78 17.50 861,340 1,705 29.7





505
5H-3, 0-5 26.15 937,191 1,627 96.4 14.9

14,703 8,278 24,805 576
7H-6, 38-39 39.42 971,662 1,442 70.9 11.0 6.8
12,926 505 789 674
8H-2, 24-25 46.24 935,093 622 110 17.0 9.9 4.4 44,654 1,921 3,443 1,503
9H-3, 135-136 58.33 985,687 241 17.8 3.3

6,131 79 689 4,093
11H-5, 137-138 70.79 968,087 128 18.9 3.8

11,710 1,474 2,814 7,536
12H-1, 110-111 75.60 693,595 47.5 27.2





14,602
204-1249F-










7H-3, 0-5 23.51 595,157 1,011 45.7 27.8 6.7
10,423 76,317 296,219 589
7H-3, 0-5 23.51 580,528 1,083 41.0





536
8H-2, 120-121 33.02 948,468 1,787 37.1 40.6 5.8
10,107 370 9,784 531
9H-3, 44-45 42.65 690,384 1,021
55.1 14.8
20,485 51,278 201,073 676
10H-2, 145-146 52.14 953,060 615 65.8
7.6
10,997 379 12,691 1,551
10H-6, 81-82 56.67 957,619 308
46.3 9.2
13,336 210 7,062 3,111
12H-2, 26-27 62.15 957,909 326 16.5 20.1 4.1
10,404 290 12,223 2,937
12H-5, 40-41 66.75 966,275 349 23.5


5,391 205 7,458 2,770
15H-3, 22-23 75.44 952,678 178 40.6
4.6
15,401 194 8,453 5,340
15H-4, 64-65 77.36 962,180 151

5.2
9,776 190 8,650 6,372
16H-3, 22-23 85.87 959,822 147 32.7
3.5
8,740 164 9,307 6,549

Note: C1 = methane, C2 = ethane, C3 = propane, i-C4 = isobutane, n-C4 = normal butane, i-C5 = isopentane, CO2 = carbon dioxide, O2 = oxygen, N2 = nitrogen.