Table T6. Gas geochemistry, Site U1380.
|
Average depth (mbsf) |
Sample type |
CH4 (ppmv) |
C2H6 (ppmv) |
C3H6 + C3H8 (ppmv) |
iso-C4H10 (ppmv) |
n-C4H10 (ppmv) |
iso-C5H12 (ppmv) |
CH4/(C2H6 + C3H8) |
|---|---|---|---|---|---|---|---|---|
| 398.1 | NZ | 8,002.91 | 12.34 | 2.27 | 0.00 | 0.00 | 0.00 | 547.66 |
| 408.6 | HS | 8,240.66 | 12.40 | 2.57 | 1.02 | 0.00 | 2.06 | 550.50 |
| 415.7 | HS | 4,582.07 | 6.98 | 1.39 | 0.55 | 0.00 | 0.91 | 546.88 |
| 428.7 | HS | 11,012.46 | 17.31 | 2.90 | 0.56 | 0.00 | 0.45 | 544.92 |
| 435.9 | HS | 5,271.90 | 6.96 | 2.88 | 1.06 | 0.42 | 1.04 | 535.49 |
| 445.9 | HS | 3,346.67 | 3.89 | 2.13 | 0.68 | 0.35 | 0.61 | 555.68 |
| 456.2 | NZ | 7,655.84 | 11.49 | 5.20 | 1.83 | 0.63 | 1.49 | 458.77 |
| 465.6 | NZ | 3,969.52 | 4.76 | 2.44 | 0.96 | 0.00 | 0.64 | 551.80 |
| 475.1 | NZ | 11,925.59 | 15.69 | 7.33 | 3.45 | 0.76 | 2.34 | 517.99 |
HS = headspace sample, NZ = sample preserved with 10% KCl solution.
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