Table T6. Composition of interstitial pore water, Site C0015.
|
Core, section, Interval (cm) |
Depth (mbsf) |
Volume (mL) |
Refractive index |
pH |
Alkalinity (mM) |
Cl (mM) |
Phosphate (µM) |
NH4 (mM) |
Si (mM)* |
Br (mM) |
SO4 (mM) |
Na (mM) |
Nacharge |
Difference (%) |
Na/Cl |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 331-C0015B- | |||||||||||||||
| 1H-1, 20–30 | 0.25 | 56 | 1.33934 | 7.37 | 2.418 | 539 | 2.5 | 0.03 | 0.42 | 0.871 | 29.0 | 468.6 | 463.5 | 1.09 | 0.869 |
| 1H-3, 55–65 | 3.39 | 56 | 1.33935 | 7.55 | 2.842 | 548 | 2.2 | 0.029 | 0.52 | 0.874 | 29.1 | 474.3 | 472.4 | 0.41 | 0.866 |
| 1H-5, 15–25 | 5.81 | 54 | 1.33934 | 7.46 | 2.326 | 549 | 4.2 | 0.025 | 0.53 | 0.882 | 29.3 | 473.7 | 474.1 | 0.09 | 0.864 |
| 331-C0015C- | |||||||||||||||
| 1H-1, 30–40 | 6.84 | 31 | 1.33883 | 8.03 | 2.701 | 503 | 3.0 | 0.06 | 0.26 | 0.802 | 26.7 | 430.7 | 433.4 | 0.63 | 0.857 |
| 1H-3, 15–25 | 8.81 | 40.5 | 1.33926 | 7.74 | 2.444 | 541 | 1.5 | 0.02 | 0.33 | 0.883 | 29.0 | 469.7 | 464.4 | 1.14 | 0.868 |
| Bottom water‡ | 2.04 | 543 | 0.836 | 28.08 | 466 | 0.859 | |||||||||
|
Core, section, Interval (cm) |
Depth (mbsf) |
K (mM) |
Mg (mM) |
Ca (mM) |
Zn (µM) |
Rb (µM) |
Mo (nM) |
Cs (nM) |
U (nM) |
Boron (µM) |
Ba (µM) |
Fe (µM) |
Li (µM) |
Mn (µM) |
Si (µM)† |
Sr (µM) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 331-C0015B- | ||||||||||||||||
| 1H-1, 20–30 | 0.25 | 11.6 | 51.7 | 10.5 | 0.440 | 1.85 | 198 | 6.4 | 14.9 | 454 | 0.41 | 0.7 | 44.6 | 0.7 | DNU | 86.5 |
| 1H-3, 55–65 | 3.39 | 11.7 | 51.6 | 10.6 | 0.298 | 1.57 | 199 | 7.4 | 13.6 | 494 | 0.36 | 0.6 | 39.2 | 1.0 | DNU | 89.1 |
| 1H-5, 15–25 | 5.81 | 11.6 | 51.4 | 10.4 | 0.518 | 1.66 | 142 | 5.8 | 12.3 | 455 | 0.35 | 0.5 | 40.2 | 0.4 | DNU | 88.3 |
| 331-C0015C- | ||||||||||||||||
| 1H-1, 30–40 | 6.84 | 9.9 | 47.9 | 9.9 | 0.422 | 1.54 | 1508 | 8.0 | 24.4 | 363 | 0.73 | 0.5 | 43.4 | 12.0 | DNU | 75.8 |
| 1H-3, 15–25 | 8.81 | 10.8 | 52.7 | 10.6 | 0.128 | 1.55 | 241 | 16.6 | 8.2 | 403 | 0.35 | 0.6 | 40.9 | 1.0 | DNU | 83.8 |
| Bottom water‡ | 10.15 | 52.5 | 10.23 | 410 | 26.2 | 90.6 | ||||||||||
* = value was determined colorimetrically aboard ship, † = value was determined postcruise via ICP-OES. Volumes are crude approximates only. Nacharge is the Na value that we calculate from charge balance based on Cl, Br, sulfate, alkalinity, Mg, K, and Ca balance. DNU = silicon data for ICP-OES not used because of disagreement with colorimetric analyses as described in Expedition 331 Scientists (2011b). Bottom water values were calculated based on the chlorinity of samples from the uppermost ~1 mbsf from Sites C0014, C0015, and C0017 (n = 4) and assuming that the elements are in constant proportion to chloride; we also make the assumption that chlorinity and chloride are the same.
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