Table T3. Composition of interstitial pore water, Site U1398B.
| Core, section |
Depth (mbsf) | Alkalinity (mM) |
pH | Cl (mM) |
± | Salinity | NH4 (mM) |
Na (mM) |
± | Mg (mM) |
± | K (mM) |
± | Ca (mM) |
± | ΣS (mM) |
± | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Top | Bottom | |||||||||||||||||
| 340-U1398B- | ||||||||||||||||||
| 9H-3 | 62.50 | 62.60 | 10.6 | 7.6 | 583.8 | 37 | 0.81 | 496.8 | 22.2 | 51.2 | 1.5 | 10.0 | 0.4 | 4.82 | 0.14 | 12.7 | 0.0 | |
| 9H-5 | 65.50 | 65.60 | 10.7 | 7.7 | 587.6 | 37 | 0.93 | 496.7 | 15.7 | 51.2 | 0.6 | 10.3 | 0.3 | 4.45 | 0.06 | 12.1 | 0.2 | |
| 11H-2 | 76.70 | 76.80 | 10.6 | 7.6 | 589.9 | 37 | 0.95 | 491.9 | 1.3 | 51.2 | 0.3 | 9.8 | 0.1 | 3.97 | 0.05 | 10.5 | 0.2 | |
| 12H-2 | 85.80 | 85.90 | 10.4 | 7.6 | 595.7 | 37 | 0.94 | 486.3 | 5.2 | 49.0 | 0.6 | 9.5 | 0.1 | 3.40 | 0.01 | 8.7 | 0.2 | |
| 14H-3 | 100.30 | 100.40 | 11.1 | 8.4 | 605.6 | 37 | 1.02 | 487.8 | 3.5 | 48.6 | 0.5 | 9.5 | 0.1 | 4.16 | 0.06 | 7.0 | 0.2 | |
| 14H-5 | 103.30 | 103.40 | 10.7 | 7.5 | 602.4 | 37 | 1.04 | 489.9 | 1.2 | 48.2 | 0.4 | 9.6 | 0.2 | 3.89 | 0.05 | 6.6 | 0.2 | |
| 15H-3 | 109.79 | 109.89 | 12.0 | 8.5 | 608.3 | 38 | 1.08 | 494.9 | 1.8 | 48.5 | 0.4 | 9.6 | 0.1 | 4.13 | 0.05 | 5.7 | 0.2 | |
| 15H-5 | 112.71 | 112.81 | 9.5 | 7.3 | 607.0 | 38 | 0.99 | 494.2 | 1.5 | 48.2 | 0.4 | 9.0 | 0.1 | 4.04 | 0.05 | 5.3 | 0.2 | |
| 18H-3 | 130.90 | 131.00 | 11.6 | 7.6 | 621.4 | 38 | 1.18 | 501.2 | 3.3 | 47.6 | 0.4 | 9.4 | 0.3 | 3.72 | 0.05 | 2.9 | 0.3 | |
| 18H-6 | 134.97 | 135.07 | 10.9 | 10.4 | 624.4 | 38 | 1.23 | |||||||||||
| 19H-2 | 138.90 | 139.00 | 10.1 | 8.0 | 624.6 | 38 | 1.22 | 514.8 | 5.2 | 47.8 | 0.5 | 9.6 | 0.1 | 3.78 | 0.00 | 2.0 | 0.3 | |
| 19H-3 | 140.40 | 140.50 | 10.4 | 7.7 | 624.7 | 38 | 1.19 | 506.7 | 2.0 | 47.5 | 0.4 | 9.3 | 0.2 | 3.71 | 0.05 | 1.9 | 0.2 | |
| 20H-2 | 148.36 | 148.46 | 10.7 | 7.9 | 628.1 | 39 | 1.30 | 514.5 | 3.1 | 47.3 | 0.4 | 9.8 | 0.1 | 3.91 | 0.05 | 1.5 | 0.2 | |
| 20H-6 | 154.24 | 154.34 | 9.4 | 8.5 | 637.6 | 38 | 1.31 | 516.8 | 1.9 | 47.6 | 0.3 | 9.5 | 0.2 | 3.74 | 0.05 | 1.1 | 0.2 | |
| 22H-2 | 160.22 | 160.32 | 8.8 | 7.6 | 639.1 | 39 | 1.31 | 518.8 | 1.4 | 47.1 | 0.3 | 9.3 | 0.2 | 3.99 | 0.05 | 0.7 | 0.2 | |
| 22H-4 | 163.15 | 163.25 | 9.0 | 8.4 | 638.5 | 39 | 1.36 | 521.9 | 2.6 | 47.1 | 0.4 | 9.6 | 0.1 | 4.14 | 0.05 | 0.7 | 0.2 | |
| 23H-1 | 166.30 | 166.40 | 8.5 | 7.6 | 638.9 | 39 | 1.36 | 520.0 | 4.1 | 47.4 | 0.5 | 9.5 | 0.2 | 4.04 | 0.06 | 0.6 | 0.2 | |
| 27X-1 | 187.47 | 187.57 | 5.4 | 7.8 | 610.1 | 38 | 1.11 | |||||||||||
| 34X-1 | 254.08 | 254.19 | 5.9 | 7.4 | 674.4 | 40 | 1.57 | 556.4 | 17.9 | 44.4 | 1.1 | 8.0 | 0.2 | 10.92 | 0.32 | 0.8 | 0.2 | |
Section 340-U1398B-27X-1 was noted to be particularly sandy during processing and may have had significant contamination during drilling. Shaded samples in gray represent average values for Na, Mg, K, Ca, and ΣS (total sulfur) from duplicate analyses from separate runs. Orange shaded ΣS values represent values at our approximate detection limit. Samples in italics represent averages from within-run duplicates.
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