Table 7. Interstitial water composition for Hole 1080A.
Core, section,
interval (cm)
Depth
(mbsf)
pH
Alkalinity
(mM)
Salinity
Cl– (titr)
(mM)
Cl– (IC)
(mM)
SO42–
(mM)
Na+
(mM)
Mg2+
(mM)
Ca2+
(mM)
K+
(mM)
H4SiO4
(µM)
NH4+ (µM)
PO43–
(µM)
Sr2+
(µM)
175-1080A-
1H-1, 140-150 1.40 7.72 5.381 35.5 555 552 26.17 484 49.91 8.80 11.68 659 434 19 91
1H-2, 140-150 2.90 8.05 9.840 35.0 557 552 23.74 480 51.95 9.70 11.26 724 1,007 46 92
2H-1, 140-150 4.70 8.21 34.729 35.0 559 549 4.66 481 49.26 6.41 10.84 776 2,877 150 97
2H-2, 140-150 6.20 8.20 38.841 35.0 560 555 0.73 484 48.00 4.84 10.72 759 3,446 167 100
2H-3, 140-150 7.70 8.12 37.650 35.0 565 554 1.76 490 48.41 4.39 10.90 743 4,906 178 102
2H-4, 140-150 9.20 8.48 41.086 34.5 565 556 0.29 491 47.87 4.33 11.28 812 4,588 174 105
2H-5, 140-150 10.70 8.37 39.443 34.5 564 556 0.21 489 47.11 4.63 11.39 881 4,664 161 106
2H-6, 140-150 12.20 7.83 37.338 34.5 561 555 0.34 487 46.21 3.63 12.34 793 4,895 168 103
3H-1, 140-155 14.20 7.64 38.960 34.5 563 556 0.12 489 46.64 4.00 11.52 833 5,849 144 104
3H-2, 140-155 15.75 7.62 35.363 34.5 564 559 0.53 489 45.92 4.12 11.38 731 6,254 159 102
3H-3, 140-155 17.30 7.86 40.143 34.5 560 556 1.09 493 45.16 3.85 11.45 752 7,186 170 102
3H-4, 140-155 18.85 7.93 39.377 34.5 560 552 0.00 491 44.71 3.54 11.57 826 6,232 182 101
3H-5, 140-155 20.40 8.25 39.493 34.5 558 554 0.43 491 44.02 4.15 11.14 814 6,682 188 98
3H-6, 140-155 21.95 7.95 40.093 34.5 558 557 0.17 493 43.50 3.65 11.09 666 6,868 190 97
4H-2, 140-150 24.04 7.59 38.742 34.5 557 555 0.11 493 43.14 3.21 10.95 764 7,384 191 101
4H-3, 140-150 25.54 7.63 36.754 34.0 557 554 0.08 496 40.38 2.23 13.06 633 8,338 167 85
4H-5, 140-150 27.20 8.43 39.903 34.0 557 555 0.70 499 40.10 2.75 13.98 600 9,818 182 96
4H-7, 140-150 28.81 7.94 39.147 34.0 557 557 0.00 498 39.97 2.63 13.00 640 8,985 184 97
4H-9, 145-155 30.61 8.43 41.288 34.0 557 556 0.00 499 40.85 3.16 10.94 836 8,425 187 104
4H-11, 140-150 32.31 7.96 38.843 34.0 552 560 0.00 495 38.82 2.75 12.70 669 5,432 190 99
5H-2, 120-130 33.92 7.84 41.202 34.0 556 554 0.74 504 39.49 2.67 11.23 700 9,752 136 104
5H-4, 77-87 36.00 8.11 41.651 34.0 540 537 0.00 489 38.63 2.36 11.01 705 11,145 125 101
5H-6, 110-120 38.40 7.50 43.418 34.0 558 559 0.00 504 40.60 2.83 10.45 762 11,013 153 106
5H-7, 110-120 39.60 7.78 43.907 34.0 555 557 0.00 503 40.26 2.53 11.07 795 10,553 145 103
5H-8, 110-120 40.80 7.48 43.509 34.0 547 547 0.07 496 39.21 2.57 11.53 716 11,211 130 103
5H-9, 110-120 42.00 8.14 39.942 34.0 557 553 0.00 504 38.21 2.57 12.22 664 13,042 100 101
6H-2, 130-140 43.04 7.66 44.055 34.0 554 558 0.84 504 39.96 2.47 11.19 762 11,868 119 104
6H-4, 130-140 45.44 7.37 46.953 34.0 552 556 0.38 503 40.25 2.68 10.33 805 10,838 153 107
6H-5, 130-140 46.84 7.80 44.986 34.0 535 553 0.47 490 37.55 2.37 11.30 728 11,265 107 101
6H-6, 130-140 48.24 7.35 47.380 34.0 554 548 0.28 505 40.78 2.62 11.00 795 11,309 141 97
6H-7, 130-140 49.64 7.17 47.703 34.0 551 548 0.55 504 40.03 2.39 10.80 774 11,748 128 105

Note: Cl– (titr) = analyzed by titration and Cl– (IC) = analyzed by ion chromatography.