Table T6. Headspace gas, Holes U1318A and U1318B.
| Core, section, interval (cm) |
Depth (mbsf) |
HS weight (g) |
Analytical weight (g) |
Safety CH4 (ppm) |
Safety C2H6 (ppm) |
Dissolved CH4 (µM) |
Adsorbed CH4 (µmol/g) |
Dissolved C2H6 (µM) |
|---|---|---|---|---|---|---|---|---|
| 307-U1318A- | ||||||||
| 1H-1, 135–140 | 1.35 | 7.41 | 10.70 | 2.30 | 0.00 | 0.433 | 0.012 | 0.000 |
| 1H-4, 0–5 | 5.00 | 5.90 | ND | 2.20 | 0.00 | ND | ND | ND |
| 2H-2, 0–5 | 10.70 | 6.54 | 11.00 | 2.30 | 0.00 | 0.474 | 0.000 | 0.000 |
| 3H-2, 0–5 | 20.20 | 7.82 | 10.35 | 1.90 | 0.00 | 0.640 | 0.042 | 0.000 |
| 4H-4, 0–5 | 31.55 | 4.84 | 11.14 | 1.80 | 0.00 | 0.500 | 0.000 | 0.000 |
| 5H-4, 0–5 | 42.70 | 10.15 | 10.50 | 2.10 | 0.00 | 0.413 | 0.023 | 0.000 |
| 6H-4, 0–5 | 51.70 | 9.43 | 12.95 | 2.00 | 0.00 | 0.434 | 0.012 | 0.000 |
| 7H-4, 0–5 | 61.70 | 9.31 | 11.90 | 2.00 | 0.00 | 0.524 | 0.019 | 0.000 |
| 8H-4, 0–5 | 70.67 | 6.94 | 11.62 | 1.70 | 0.00 | 0.483 | 0.008 | 0.000 |
| 9H-4, 0–5 | 80.70 | 5.85 | 13.39 | 1.60 | 0.00 | 0.231 | 0.000 | 0.000 |
| 10H-4, 0–5 | 89.70 | 8.12 | 10.22 | 2.00 | 0.00 | 0.000 | 0.000 | 0.000 |
| 11H-4, 0–5 | 99.70 | 8.99 | 10.37 | 2.10 | 0.00 | 0.307 | 0.009 | 0.000 |
| 12H-4, 0–5 | 108.70 | 4.91 | 9.52 | 1.90 | 0.00 | 0.396 | 0.000 | 0.000 |
| 13H-4, 0–5 | 118.70 | 8.31 | 10.66 | 2.20 | 0.00 | 0.576 | 0.024 | 0.086 |
| 14H-3, 0–5 | 126.20 | 5.96 | 11.22 | 2.10 | 0.00 | 0.664 | 0.014 | 0.129 |
| 15H-3, 0–5 | 135.70 | 5.66 | 10.97 | 2.00 | 0.00 | 0.743 | 0.019 | 0.144 |
| 307-U1318B- | ||||||||
| 17X-3, 125–130 | 151.95 | 5.40 | ND | 1.50 | 0.00 | ND | ND | ND |
| 18X-3, 175–180 | 162.05 | 7.62 | 9.80 | 2.10 | 0.00 | 5.477 | 0.531 | 0.118 |
| 19X-3, 75– 80 | 170.65 | 6.20 | 9.85 | 2.60 | 0.00 | 0.348 | 0.000 | 0.058 |
| 20X-3, 75–80 | 180.25 | 7.09 | 8.46 | 2.20 | 0.00 | 1.414 | 0.138 | 0.052 |
| 21X-5, 75–80 | 192.35 | 8.15 | 9.99 | 2.90 | 0.00 | 0.500 | 0.019 | 0.076 |
| 22X-4, 75–80 | 200.45 | 7.19 | 9.58 | 2.60 | 0.00 | 0.577 | 0.014 | ND |
| 23X-3, 125–130 | 209.45 | 5.89 | 9.19 | 1.90 | 0.00 | 0.460 | 0.003 | 0.080 |
| 24X-4, 125–130 | 220.45 | 7.55 | 9.64 | 2.90 | 0.00 | 0.719 | 0.029 | 0.139 |
| 25X-2, 125–130 | 226.45 | 7.97 | 11.39 | 2.80 | 0.00 | 0.719 | 0.027 | 0.155 |
| 26X-2, 15–20 | 229.96 | 6.83 | 10.03 | 2.70 | 0.00 | 1.324 | 0.084 | 0.157 |
| 27X-1, 130–135 | 236.30 | 7.56 | 10.37 | 3.70 | 0.70 | 37.783 | 3.589 | 0.275 |
Notes: HS = headspace. ND = not determined.
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