|
Hole, core, section,
interval (cm) |
Depth
(mbsf) |
C1
(ppmv) |
CO2
(ppmv) |
C2=
(ppmv) |
C2
(ppmv) |
C3
(ppmv) |
C1/C2
|
|---|---|---|---|---|---|---|---|
| 1087A-1H-2, 0-5 | 1.50 | 2 | 1,266 |
|
|
|
|
| 1087A-1H-4, 0-5 | 4.50 | 3 | 1,357 |
|
|
|
|
| 1087A-2H-4, 0-5 | 12.70 | 6 | 3,737 |
|
|
|
|
| 1087A-3H-4, 0-5 | 22.10 | 25 | 16,520 |
|
0.3 |
|
93 |
| 1087A-4H-4, 0-5 | 31.70 | 54 | 21,675 |
|
0.7 | 0.4 | 82 |
| 1087A-5H-4, 0-5 | 41.20 | 68 | 19,416 | 0.4 | 0.7 | 0.6 | 98 |
| 1087A-6H-4, 0-5 | 50.70 | 79 | 28,958 |
|
0.9 | 0.7 | 92 |
| 1087A-7H-4, 0-5 | 60.20 | 78 | 1,296 |
|
0.8 | 0.6 | 97 |
| 1087A-8H-5, 0-5 | 71.20 | 183 | 25,908 |
|
1.0 | 1.0 | 192 |
| 1087A-9H-4, 0-5 | 79.20 | 381 | 38,386 |
|
0.8 | 0.7 | 476 |
| 1087A-10H-4, 0-5 | 88.70 | 897 | 32,535 |
|
1.4 | 1.6 | 641 |
| 1087A-11H-4, 0-5 | 98.20 | 1,241 | 31,720 |
|
1.4 | 1.6 | 886 |
| 1087A-12H-6, 0-5 | 110.70 | 1,171 | 22,720 |
|
1.1 | 1.2 | 1,065 |
| 1087A-13H-6, 0-5 | 120.20 | 1,299 | 20,255 |
|
1.2 | 1.5 | 1,082 |
| 1087A-14H-4, 0-5 | 126.70 | 1,573 | 22,167 |
|
1.4 | 1.9 | 1,124 |
| 1087A-15H-6, 0-5 | 139.20 | 2,064 | 23,247 |
|
1.4 | 1.9 | 1,474 |
| 1087A-16H-6, 0-5 | 148.70 | 2,046 | 20,390 |
|
1.4 | 1.8 | 1,461 |
| 1087A-17H-4, 0-5 | 155.20 | 2,865 | 26,412 |
|
1.5 | 2.1 | 1,910 |
| 1087A-18H-5, 0-5 | 166.20 | 2,153 | 19,421 |
|
1.2 | 1.5 | 1,794 |
| 1087A-19H-6, 0-5 | 177.20 | 2,541 | 20,980 |
|
1.5 | 2.5 | 1,694 |
| 1087A-20H-4, 0-5 | 183.70 | 4,043 | 29,420 | 0.2 | 2.0 | 2.9 | 2,022 |
| 1087A-21H-6, 0-5 | 196.20 | 4,383 | 26,995 | 0.2 | 2.0 | 2.5 | 2,192 |
| 1087A-22H-5, 0-5 | 204.20 | 3,596 | 19,354 |
|
1.4 | 1.8 | 2,569 |
| 1087A-23H-4, 0-5 | 212.20 | 3,636 | 20,261 |
|
1.4 | 1.6 | 2,597 |
| 1087C-25H-4, 0-5 | 224.60 | 2,390 | 12,177 |
|
0.9 | 1.0 | 2,656 |
| 1087A-24H-6, 0-5 | 224.70 | 3,361 | 16,412 |
|
1.1 | 1.2 | 3,055 |
| 1087A-25H-6, 0-5 | 234.20 | 3,473 | 15,569 |
|
1.3 | 1.7 | 2,672 |
| 1087C-26H-6, 0-5 | 237.10 | 2,935 | 13,106 |
|
1.1 | 1.4 | 2,668 |
| 1087A-26H-4, 0-5 | 240.70 | 4,311 | 17,323 |
|
1.3 | 1.4 | 3,316 |
| 1087C-27H-6, 0-5 | 246.60 | 3,550 | 13,708 |
|
1.0 | 1.1 | 3,550 |
| 1087C-28X-4, 0-5 | 253.10 | 4,748 | 16,501 |
|
1.4 | 1.7 | 3,391 |
| 1087A-27H-6, 0-5 | 253.20 | 4,519 | 15,535 |
|
1.2 | 1.4 | 3,766 |
| 1087C-29X-5, 0-5 | 260.90 | 5,300 | 17,492 |
|
1.4 | 1.5 | 3,786 |
| 1087C-30X-6, 0-5 | 268.70 | 5,670 | 17,037 |
|
1.4 | 1.6 | 4,050 |
| 1087C-31X-4, 0-5 | 275.30 | 2,298 | 7,406 |
|
0.4 | 0.5 | 5,745 |
| 1087C-32X-6, 0-5 | 287.90 | 5,685 | 15,022 |
|
1.1 | 1.2 | 5,168 |
| 1087C-33X-6, 0-5 | 297.50 | 3,867 | 10,094 |
|
0.8 | 0.7 | 4,834 |
| 1087C-34X-4, 0-5 | 304.20 | 3,210 | 9,463 |
|
0.7 | 0.6 | 4,586 |
| 1087C-35X-6, 0-5 | 316.75 | 5,894 | 11,916 |
|
1.0 | 0.8 | 5,894 |
| 1087C-36X-6, 0-5 | 326.40 | 5,924 | 10,644 |
|
0.9 |
|
6,582 |
| 1087C-37X-4, 0-5 | 333.00 | 5,712 | 10,816 |
|
0.8 | 0.7 | 6,720 |
| 1087C-38X-6, 0-5 | 345.70 | 8,972 | 9,666 | 0.3 | 1.2 | 1.2 | 7,477 |
| 1087C-39X-5, 0-5 | 353.80 | 7,733 | 6,565 | 0.7 | 1.2 | 1.4 | 6,444 |
| 1087C-40X-4, 0-5 | 361.90 | 7,032 | 4,624 | 1.0 | 1.5 | 1.4 | 4,688 |
| 1087C-41X-4, 0-5 | 371.60 | 14,254 | 11,463 |
|
1.3 | 0.8 | 10,965 |
| 1087C-42X-5, 0-5 | 382.70 | 9,653 | 8,714 |
|
0.9 | 0.4 | 11,224 |
| 1087C-43X-4, 0-5 | 390.80 | 9,580 | 6,067 | 0.2 | 0.9 | 0.6 | 10,886 |
| 1087C-44X-4, 0-5 | 400.50 | 9,143 | 4,896 |
|
0.7 | 0.4 | 13,061 |
| 1087C-46X-4, 0-5 | 419.70 | 16,509 | 6,886 |
|
1.0 | 0.5 | 16,509 |
| 1087C-47X-4, 0-5 | 429.30 | 14,230 | 3,542 |
|
0.7 | 0.3 | 20,329 |
| 1087C-48X-4, 0-5 | 439.00 | 10,791 | 3,936 |
|
0.6 | 0.2 | 19,270 |
| 1087C-49X-4, 0-5 | 448.60 | 10,241 | 3,362 |
|
0.5 | 0.1 | 20,482 |
| 1087C-50X-2, 0-5 | 455.30 | 7,469 | 746 |
|
0.5 |
|
14,938 |
| 1087C-51X-6, 0-5 | 470.90 | 7,907 | 1,180 |
|
0.2 |
|
39,535 |
| 1087C-52X-4, 0-5 | 477.60 | 8,297 | 990 |
|
0.4 |
|
20,742 |
| 1087C-53X-6, 0-5 | 490.20 | 11,927 | 989 |
|
0.5 |
|
23,854 |
Notes: C1 = methane; CO2 = carbon dioxide; C2= = ethene; C2 = ethane; and C3 = propane. Dominance of C1 over C2 indicates that the gases originate from in situ microbial degradation of organic matter.