Table 12. Interstitial-water data for Site 996. "Core, section, interval (cm)" Depth (mbsf) pH Alk (mM) Sal (g/kg) Cl- (mM) Mg2+ (mM) Ca2+ (mM) SO42- (mM) NH4+ (uM) SiO2 (uM) K+ (mM) Sr2+ (uM) Na+ (mM) 164-996A- "1H-1, 85-95" 0.85 8.45 21.5 34 561 50.4 3.9 7.2 0 112 12.2 42 478 "1H-6, 33-38" 3.62 8.25 23.6 41 693 53.6 1.9 0.3 980 312 16.4 63 584 "3X-1, 61-71" 10.11 8.52 26.7 36 608 41.6 4.2 1.3 1520 465 13.4 144 525 "8H-1, 96-111" 49.46 7.73 28.9 44 952 42.8 4.2 0.1 14590 480 22.7 248 848 "8H-2, 0-12" 49.61 7.4 29.7 55 959 44.1 5 0 14930 546 21.7 261 866 "8H-5, 19-34" 52.12 7.68 27.6 53 933 41.4 3.8 0 14510 480 23.1 235 845 "8H-5, 72-82" 52.65 7.38 26.6 49 852 39 4.1 0 13900 431 21 222 793 "9H-1, 80-90" 58.8 7.62 26.5 50 907 39.1 4.1 0.9 14420 459 21.7 228 809 "9H-3, 87-102" 61.55 7.67 25.2 47 840 36.5 3.8 0 12310 461 19.5 218 762 164-996B- "1H-3, 135-150" 3.32 8.4 35.7 40 675 54.2 3.2 0.6 970 478 15.2 88 574 164-996C- "1H-2, 52-67" 1.66 8.27 42.2 42 701 61.3 3.4 1.9 540 202 14.8 49 584 164-996D- "1H-1, 0-20" 0.1 8.53 36.3 34 572 51 2.4 1.4 40 93 12.2 34 487 "1H-1, 20-40" 0.3 8.47 38 34 563 49.2 2.4 0.3 30 106 12.4 39 481 "4H-2, 10-25" 23.87 7.5 17.3 40 712 36.7 5.9 0.2 3740 482 16.3 213 613 "4H-7, 140-150" 30.14 8.13 16.7 40 712 36.3 6 0 3640 478 15.7 215 612 "6H-2, 52-67" 42.99 7.75 21.9 47 857 37 4.5 0.3 10720 567 19.9 243 751 "6H-5, 28-43" 45.49 7.52 18 40.5 739 31.8 3.7 0.4 8710 642 16.6 200 647 164-996E- "1H-1, 135-150" 1.35 8.02 4.2 34 560 51.7 10.6 28.1 10 214 12.4 102 480 "1H-3, 72-87" 3.72 8.61 16.5 35 563 50.5 7.6 17.3 250 327 12.6 101 483 "2H-2, 135-150" 6.95 8.65 28.7 33.5 573 43.9 3.7 0.9 460 412 12.9 114 494 "2H-4, 134-150" 9.94 8.68 27.7 34 580 40.5 4.3 0.6 780 527 13.2 131 502 "2H-6, 117-132" 12.44 8.58 20.7 34 590 40.1 3.1 0.1 1000 425 13.4 115 505 "4H-3, 135-150" 26.75 7.77 15.7 46 834 33.6 5.2 0 9190 540 18.4 240 737 "4H-5, 135-150" 29.05 7.51 15.5 44 812 31.7 4.7 0 8290 597 17.2 228 706 "5H-4, 135-150" 36.9 7.32 15.7 46 823 32.3 4.8 0 7850 576 18.4 276 739 "5H-6, 72-87" 38.82 7.29 17.9 48.5 870 34.5 4.8 0 10590 614 19.1 282 782 "6X-4, 135-150" 47.86 7.85 20.6 52 940 37.4 5.3 0.1 11770 631 20.7 274 843 "6X-6, 135-150" 50.86 7.39 20.9 52 934 37.2 5.4 0.8 12120 631 20.2 278 837 "7H-3, 10-19" 54.26 7.75 24.3 54 970 38.4 5 0 14710 438 22.5 281 869 "7H-6, 55-75" 57.73 7.85 25.2 56.5 997 40.5 5.1 0 15080 552 23.5 289 910 "Notes: Alk = alkalinity, and Sal = salinity. Sodium was analyzed by atomic emission spectroscopy."