Table T6. Headspace gas, Holes U1317A and U1317D.
| Core, section | Depth (mbsf) |
Safety CH4 (ppm) |
Safety C2H6 (ppm) |
C2/C1 ratio |
Dissolved methane (µM) |
Adsorbed methane (µmol/g) |
Dissolved ethane (µM) |
|---|---|---|---|---|---|---|---|
| 307-U1317A- | |||||||
| 1H-4 | 5 | 1.90 | BDL | BDL | 0.087 | BDL | BDL |
| 2H-4 | 11.5 | 2.00 | BDL | BDL | 0.100 | BDL | BDL |
| 3H-4 | 21 | 1.80 | BDL | BDL | 0.049 | BDL | BDL |
| 4H-5 | 32 | 2.10 | BDL | BDL | 0.178 | BDL | BDL |
| 6H-4 | 49.5 | 2.10 | BDL | BDL | 0.173 | BDL | BDL |
| 7H-4 | 59 | 2.00 | BDL | BDL | 0.150 | BDL | BDL |
| 8H-4 | 68.5 | 1.90 | BDL | BDL | 0.127 | BDL | BDL |
| 9H-4 | 78 | 1.90 | BDL | BDL | 0.097 | BDL | BDL |
| 10H-4 | 87.5 | 2.10 | BDL | BDL | 0.222 | BDL | BDL |
| 11H-4 | 97 | 2.00 | BDL | BDL | 0.365 | BDL | BDL |
| 12H-4 | 106.5 | 2.30 | BDL | BDL | 0.300 | BDL | BDL |
| 13H-4 | 116 | 2.10 | BDL | BDL | 0.258 | BDL | BDL |
| 14H-4 | 125.5 | 2.40 | BDL | BDL | 0.667 | BDL | BDL |
| 17X-2 | 132.8 | 308 | 1.20 | BDL | 105 | 0.02 | 0.41 |
| 18X-1 | 136.8 | 576 | 1.90 | BDL | 338 | BDL | 1.12 |
| 307-U1317D- | |||||||
| 3R-3 | 130.10 | 2.10 | BDL | BDL | 0.286 | 0.01 | BDL |
| 4R-2 | 137.30 | 2.50 | BDL | ND | 0.461 | ND | ND |
| 5R-1 | 147.73 | 220 | BDL | ND | 87.0 | ND | ND |
| 6R-1 | 152.20 | 528 | 1.50 | 2.85E–03 | 284 | 0.07 | 0.81 |
| 7R-2 | 158.70 | 1190 | 3.60 | 3.03E–03 | 690 | BDL | 2.09 |
| 8R-2 | 168.37 | 3010 | 9.30 | 3.10E–03 | 1,310 | BDL | 4.07 |
| 9R-1 | 176.50 | 2200 | 8.00 | 3.63E–03 | 1,320 | BDL | 4.80 |
| 10R-1 | 186.25 | 3720 | 13.00 | 3.49E–03 | 2,010 | BDL | 7.04 |
| 11R-2 | 197.15 | 6470 | 20.40 | 3.16E–03 | 2,570 | BDL | 8.11 |
| 12R-3 | 207.75 | 9370 | 32.10 | 3.43E–03 | 2,450 | BDL | 8.40 |
| 13R-5 | 220.85 | 17,000 | 46.40 | 2.71E–03 | 3,310 | BDL | 8.96 |
| 14R-3 | 227.45 | 4470 | 16.20 | 3.62E–03 | 2,140 | 0.21 | 7.74 |
| 15R-1 | 233.58 | 4510 | 12.50 | 2.78E–03 | 1,870 | 0.21 | 5.20 |
| 16R-3 | 246.65 | 7310 | 20.30 | 2.78E–03 | 5,280 | BDL | 14.67 |
| 17R-2 | 254.75 | 125 | BDL | 0.0 | 430 | 0.15 | BDL |
| 18R-3 | 265.96 | 11,900 | 32.20 | 2.71E–03 | 6,660 | BDL | 18.04 |
Notes: ND = not determined. BDL = below detection limit.
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