|
Core, section,
interval (cm) |
Depth
(mbsf) |
C1
(ppmv) |
CO2
(ppmv) |
C2=
(ppmv) |
C2
(ppmv) |
C3=
(ppmv) |
C3
(ppmv) |
C1/C2
|
|---|---|---|---|---|---|---|---|---|
| 175-1081A- | ||||||||
| 2H-2, 0-5 | 2.50 | 3 | 3,121 |
|
|
|
|
|
| 2H-4, 0-5 | 5.50 | 7 |
|
|
0.1 |
|
|
122 |
| 3H-3, 0-5 | 13.40 | 14 | 7,560 | 0.3 | 0.4 |
|
|
36 |
| 4H-4, 0-5 | 24.40 | 15 |
|
|
0.3 |
|
|
44 |
| 5H-4, 0-5 | 33.90 | 36 | 12,879 | 0.2 | 0.9 |
|
|
40 |
| 6H-4, 0-5 | 43.40 | 87 |
|
0.2 | 1.7 |
|
|
51 |
| 7H-4, 0-5 | 52.90 | 252 | 24,148 | 0.0 | 1.6 |
|
|
158 |
| 8H-4, 0-5 | 62.40 | 3,602 |
|
0.1 | 2.0 |
|
|
1,801 |
| 9H-4, 0-5 | 71.90 | 18,258 | 21,872 | 0.1 | 0.1 |
|
|
182,580 |
| 10H-4, 0-5 | 81.40 | 30,671 |
|
0.2 | 5.0 |
|
0.9 | 6,134 |
| 11H-4, 0-5 | 90.90 | 57,166 | 14,839 | 0.3 | 9.9 |
|
2.5 | 5,774 |
| 12H-4, 0-5 | 100.40 | 31,856 |
|
0.6 | 9.0 |
|
3.4 | 3,540 |
| 13H-6, 0-5 | 113.05 | 42,073 | 24,404 | 0.3 | 8.5 |
|
3.0 | 4,950 |
| 14H-7, 0-5 | 124.00 | 36,868 |
|
0.4 | 9.4 |
|
4.2 | 3,922 |
| 15H-4, 0-5 | 129.04 | 28,578 | 21,694 | 0.5 | 9.4 |
|
4.6 | 3,040 |
| 16H-7, 0-5 | 140.21 | 21,705 |
|
0.4 | 7.5 |
|
3.6 | 2,894 |
| 17X-4, 0-5 | 141.46 | 6,463 | 20,914 | 0.3 | 3.9 |
|
2.0 | 1,657 |
| 18H-4, 0-5 | 150.45 | 32,924 |
|
0.6 | 9.6 |
|
4.4 | 3,430 |
| 19X-4, 0-5 | 159.00 | 23,623 | 37,330 | 0.3 | 10.0 |
|
4.9 | 2,362 |
| 20X-4, 0-5 | 168.60 | 7,721 |
|
0.3 | 4.6 |
|
2.9 | 1,678 |
| 21X-4, 0-5 | 178.30 | 3,252 | 22,832 | 0.2 | 2.0 |
|
1.3 | 1,626 |
| 22X-4, 0-5 | 188.00 | 5,515 |
|
0.3 | 4.5 |
|
2.8 | 1,226 |
| 23X-4, 0-5 | 197.60 | 3,844 | 22,566 | 0.4 | 4.7 |
|
3.3 | 818 |
| 24X-4, 0-5 | 207.30 | 4,597 |
|
0.3 | 5.2 |
|
3.4 | 884 |
| 25X-4, 0-5 | 216.90 | 5,294 | 31,951 | 0.4 | 5.9 |
|
4.5 | 897 |
| 26X-4, 0-5 | 226.50 | 4,365 |
|
0.4 | 4.7 |
|
3.1 | 929 |
| 27X-4, 0-5 | 236.00 | 6,380 | 11,876 | 1.3 | 13.0 | 0.9 | 9.8 | 491 |
| 28X-4, 0-5 | 245.70 | 4,892 |
|
0.4 | 8.6 |
|
6.1 | 569 |
| 29X-4, 0-5 | 255.30 | 6,573 | 10,735 | 0.5 | 10.7 |
|
7.9 | 614 |
| 30X-4, 0-5 | 264.90 | 4,741 |
|
0.6 | 8.2 |
|
5.9 | 578 |
| 31X-3, 0-5 | 273.10 | 4,889 | 17,050 | 0.4 | 10.0 |
|
7.1 | 489 |
| 32X-5, 0-5 | 285.70 | 4,635 |
|
0.3 | 7.4 |
|
5.3 | 626 |
| 33X-4, 0-5 | 293.80 | 4,644 | 17,938 | 0.2 | 4.5 |
|
3.6 | 1,032 |
| 34X-2, 0-5 | 300.50 | 4,765 |
|
0.2 | 6.5 |
|
1.7 | 733 |
| 35X-2, 0-5 | 310.10 | 4,932 | 17,380 | 0.2 | 8.8 | 0.1 | 6.2 | 560 |
| 36X-5, 0-5 | 323.15 | 12,146 |
|
0.9 | 21.9 |
|
14.9 | 555 |
| 37X-4, 0-5 | 332.30 | 7,925 | 9,196 | 0.9 | 9.4 | 0.4 | 9.2 | 843 |
| 38X-2, 0-5 | 339.00 | 5,834 |
|
1.3 | 10.4 |
|
10.9 | 561 |
| 39X-5, 0-5 | 352.42 | 4,092 | 14,001 | 0.3 | 4.3 | 0.1 | 3.6 | 952 |
| 40X-1, 0-5 | 356.80 | 16,290 |
|
0.2 | 6.6 |
|
3.7 | 2,468 |
| 41X-4, 0-5 | 370.90 | 2,461 | 6,025 | 1.0 | 6.1 | 0.1 | 7.6 | 403 |
| 42X-4, 0-5 | 380.50 | 6,870 |
|
0.7 | 16.6 |
|
17.8 | 414 |
| 43X-4, 0-5 | 390.10 | 5,417 | 7,713 | 2.0 | 23.8 |
|
31.6 | 228 |
| 44X-2, 0-5 | 396.80 | 2,312 |
|
0.9 | 6.4 |
|
9.5 | 361 |
| 45X-4, 0-5 | 409.40 | 5,290 | 7,743 | 1.6 | 13.6 | 0.2 | 18.4 | 389 |
| 46X-4, 0-5 | 419.10 | 6,565 |
|
0.9 | 10.0 |
|
11.4 | 656 |
| 47X-4, 0-5 | 428.70 | 3,129 | 4,422 | 1.1 | 9.4 |
|
13.5 | 333 |
| 48X-6, 0-5 | 441.30 | 5,035 |
|
1.8 | 10.4 | 0.8 | 13.7 | 484 |
| 49X-3, 0-5 | 446.50 | 8,698 | 20,145 | 0.5 | 13.0 |
|
15.5 | 669 |
Notes: C1 = methane; CO2 = carbon dioxide; C2= = ethene; C2 = ethane; C3= = propene; and C3 = propane. Dominance of C1 over C2 indicates that the gases originate from in situ microbial degradation of organic matter.