Table 10. Interstitial-water data for Sites 991, 992, and 993. Core, section, interval (cm) Depth (mbsf) pH Alk (mM) Sal (g/kg) Cl- (mM) Mg2+ (mM) Ca2+ (mM) SO42- (mM) PO43- (uM) NH4+ (mM) SiO2 (uM) K+ (mM) Na+ (mM) Sr2+ (uM) 164-991A- 1H-1, 145-150 1.5 7.78 3.79 35.0 557 52.1 10.6 27.5 7 0.11 501 12.3 478 97 1H-2, 145-150 3.0 7.67 4.01 35.0 556 51.5 10.3 26.9 8 0.25 588 12.9 477 101 1H-3, 145-150 4.5 7.67 5.42 35.0 557 51.8 10.1 25.4 15 0.34 683 13.3 476 107 1H-4, 145-150 6.0 7.75 6.10 35.0 559 50.0 9.4 25.8 31 0.42 739 13.0 484 110 1H-5, 145-150 7.5 7.79 6.85 35.0 559 51.0 9.7 23.4 32 0.52 758 13.0 477 113 2H-1, 145-150 10.6 7.88 9.41 35.0 570 48.3 8.2 20.6 42 1.06 726 11.8 495 124 2H-2, 145-150 12.1 7.86 9.97 34.5 573 48.2 8.0 19.0 31 1.09 764 12.5 495 128 2H-3, 145-150 13.6 8.07 9.29 34.5 568 48.2 8.1 18.1 17 1.22 12.1 487 130 2H-4, 145-150 15.1 7.99 12.15 34.5 575 48.5 7.8 17.0 42 1.36 12.5 494 129 2H-5, 145-150 16.6 8.14 10.55 35.0 579 46.6 7.2 16.2 18 1.39 814 12.0 501 133 2H-6, 145-150 18.1 8.19 10.71 35.0 580 47.8 7.0 14.9 18 1.36 789 12.8 497 136 3H-1, 145-150 20.1 7.97 13.63 35.0 582 48.6 7.1 13.5 70 1.51 1002 13.0 497 146 3H-2, 145-150 21.6 8.20 15.47 35.0 582 47.8 6.7 12.9 21 1.53 802 12.4 500 143 3H-3, 145-150 23.1 8.11 15.52 35.0 585 46.8 6.3 12.0 48 2.19 908 12.4 504 139 3H-4, 145-150 24.6 8.19 16.64 34.5 588 46.6 6.3 11.2 18 2.35 796 12.8 506 143 3H-5, 145-150 26.1 8.14 18.05 34.0 590 47.6 6.4 11.5 22 2.38 896 12.6 508 145 3H-6, 145-150 27.6 8.14 19.19 35.5 593 46.2 6.1 10.0 57 2.78 877 12.9 512 146 2H-4, 145-150 31.1 8.17 21.57 36.0 595 46.5 6.0 7.3 28 2.75 852 13.3 510 151 2H-5, 145-150 35.6 8.24 26.88 36.0 609 44.9 5.0 0.9 24 3.01 821 13.1 522 161 5H-2, 145-150 40.6 7.97 25.26 36.2 626 43.4 5.4 0.7 0 4.18 827 13.3 537 193 5H-5, 145-150 45.1 7.83 21.74 36.2 641 41.3 5.3 0.1 13 4.95 764 12.6 552 226 6H-3, 145-150 51.6 7.70 24.33 38.0 659 42.2 7.2 0.2 25 6.29 689 12.8 565 282 6H-5, 145-150 54.6 7.35 24.64 38.0 664 43.2 7.4 0.2 18 6.43 695 13.1 568 295 164-992-A- 1H-1, 145-150 1.5 7.74 3.39 35.0 551 51.3 10.4 29.1 0 0.03 356 13.2 476 96 2H-1, 145-150 4.3 7.71 3.25 35.0 552 50.6 10.4 28.6 0 0.03 603 12.8 478 94 2H-2, 145-150 5.8 7.71 3.09 35.0 550 51.1 10.5 28.8 0 0.01 632 13.1 474 94 2H-3, 145-150 7.3 7.63 3.06 35.0 550 51.0 10.4 28.5 0 0.04 697 13.1 474 90 2H-4, 145-150 8.8 7.68 2.88 35.0 551 50.6 10.1 28.3 0 0.02 690 13.1 476 93 2H-5, 145-150 10.3 7.70 3.10 35.0 553 50.3 10.2 28.6 0 0.04 726 12.8 479 88 2H-6, 145-150 11.8 7.66 3.15 35.0 550 51.9 10.5 28.5 2 0.05 704 13.3 472 86 3H-1, 145-150 13.8 7.83 3.24 35.0 549 49.7 10.1 28.4 2 0.11 922 13.0 476 91 3H-2, 145-150 15.3 7.71 3.29 35.0 551 51.3 10.6 28.2 2 0.15 828 13.1 473 88 3H-3, 145-150 16.8 7.81 3.61 35.0 551 50.3 10.5 27.8 3 0.18 784 13.0 475 87 3H-4, 145-150 18.3 7.80 4.71 35.0 551 49.6 10.1 27.5 2 0.26 886 13.0 478 88 3H-5, 145-150 19.8 7.79 4.39 35.0 554 34.7 10.4 27.1 1 0.35 893 12.6 509 88 3H-6, 145-150 21.3 7.83 4.72 35.0 556 49.1 9.9 27.3 26 0.39 922 13.3 484 91 4H-1, 145-150 23.3 7.88 5.15 35.0 558 49.9 10.5 27.4 4 0.43 922 13.2 483 95 4H-2, 145-150 24.8 7.97 5.62 35.0 560 47.9 10.2 27.3 16 0.53 958 12.3 491 96 4H-3, 145-150 26.3 35.0 560 48.6 10.0 25.6 9 0.57 1045 12.5 481 97 4H-4, 145-150 27.8 7.81 5.96 35.0 560 50.2 10.4 25.4 18 0.58 980 13.5 481 97 4H-5, 145-150 29.3 7.84 6.31 35.0 559 49.7 10.2 23.3 11 0.67 748 14.0 477 99 4H-6, 145-150 30.8 7.94 7.13 35.0 558 48.5 9.9 23.3 10 0.91 654 13.4 480 100 5H-2, 145-150 34.3 8.09 8.31 35.0 565 49.7 9.9 24.3 7 0.94 1009 13.6 488 100 5H-5, 145-150 38.8 8.02 9.99 34.5 571 49.1 9.0 21.1 11 1.35 958 13.4 492 108 6H-2, 145-150 43.8 7.59 14.49 35.0 577 47.2 8.5 16.4 60 1.32 994 12.8 499 123 6H-4, 145-150 46.8 7.93 13.95 34.5 582 46.1 6.8 12.1 15 2.00 740 14.0 498 124 6H-6, 145-150 49.8 8.22 20.18 35.0 584 44.8 5.8 5.8 28 2.13 842 12.6 500 141 164-993-A- 1H-1, 95-100 1.0 7.47 3.61 34.0 552 49.8 10.0 26.6 0 0.39 560 13.4 475 97 2X-1, 145-150 3.4 7.68 5.42 34.0 559 50.8 9.8 24.9 3 0.82 623 13.4 479 116 2X-2, 145-150 4.9 7.37 6.50 34.0 559 48.8 9.1 24.0 17 1.27 757 13.0 483 132 2X-3, 145-150 6.4 7.62 7.71 34.0 560 50.5 9.0 23.0 46 1.66 836 13.9 479 140 2X-4, 145-150 7.9 7.40 7.65 34.0 558 47.6 8.7 22.5 24 1.49 768 12.6 484 143 2X-5, 145-150 9.4 7.68 8.02 34.5 563 51.2 9.2 23.3 21 2.13 721 13.4 481 145 2X-6, 145-150 10.9 7.71 8.27 34.5 562 48.7 8.5 22.8 15 2.09 714 13.0 486 146 3X-1, 145-150 15.3 7.86 11.02 34.5 570 50.5 8.6 20.7 51 2.29 727 13.3 488 172 3X-2, 145-150 16.8 7.94 14.72 34.5 570 48.8 7.7 16.7 71 3.09 736 13.2 489 189 3X-3, 145-150 18.3 8.06 15.95 34.5 573 45.2 6.5 13.0 65 3.29 757 12.5 496 201 3X-4, 145-150 19.8 7.91 16.07 34.5 578 44.2 6.1 9.9 82 4.60 755 12.8 496 210 3X-5, 145-150 21.3 8.09 21.71 34.5 581 44.0 5.4 6.0 83 4.82 780 12.7 498 234 3X-6, 145-150 22.8 8.02 23.09 35.5 585 44.1 5.4 5.5 105 4.84 868 13.3 502 242 4X-2, 145-150 26.0 7.85 25.28 36.0 589 41.3 4.8 1.9 67 5.56 782 13.2 507 298 4X-5, 145-150 30.5 7.69 26.25 36.0 599 39.5 5.8 3.3 99 7.79 702 12.6 520 330 5X-2, 145-150 35.6 7.93 28.69 36.0 613 38.5 6.7 2.8 56 9.18 734 12.6 535 421 5X-5, 145-150 40.1 7.91 28.45 37.0 631 38.0 6.8 3.5 26 10.08 612 14.0 552 445 6X-2, 145-150 45.2 7.57 28.19 38.0 638 39.8 8.6 3.5 20 12.51 671 14.3 549 484 6X-3, 145-150 46.7 7.47 25.91 37.0 642 36.1 6.8 1.4 17 9.71 668 14.2 560 506 Notes: Alk = alkalinity, and Sal = salinity. Sodium was calculated based on charge balance with an average standard deviation of 0.67%. Measurements of other species are described in the "Inorganic Geochemistry" section of the "Explanatory Notes" chapter (this volume).