Table 16. Composition of pore waters from sediments from Sites 1026 and 1027. "Core, section, " Volume Squeeze T In situ T Depth Salinity Alkalinity Chlorinity Sulfate Na K Mg Ca Si NH3 PO4 interval (cm) (mL) (deg. C) (deg.C) (mbsf) "(R.I.,%) " pH (meq/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) (micromol/kg) (micromol/kg) (micromol/kg) Na/Cl 168-1026A- "1H-1, 140-150" 55 5.3 2.2 1.45 35.0 7.73 5.03 543.3 25.70 466.6 12.24 50.38 10.05 655 214 25.5 0.8589 "1H-2, 140-150" 30 7.2 2.6 2.95 35.0 7.83 9.41 543.4 25.70 471.5 12.11 50.32 10.03 622 398 41.8 0.8675 "1H-3, 140-150" 55 8.0 3.0 4.45 34.5 7.85 9.90 544.4 22.87 468.8 11.75 50.03 9.71 710 555 52.0 0.8612 "2H-2, 140-150" 55 8.2 4.0 8.35 34.5 7.83 16.46 547.8 15.21 466.6 10.23 49.90 9.01 548 1014 34.1 0.8518 "2H-3, 140-150" 55 8.6 4.4 9.85 34.5 7.85 17.88 551.7 13.78 470.2 10.20 49.52 8.85 546 1061 27.9 0.8522 "2H-5, 140-150" 55 10.4 5.2 12.85 34.5 8.02 20.45 555.1 12.08 472.8 9.99 49.97 8.49 522 1234 30.4 0.8517 "3H-5, 140-150" 20 12.0 7.6 22.35 34.5 8.16 27.98 560.9 7.30 477.9 8.93 50.99 7.32 339 1425 10.0 0.8521 "4H-5, 140-150" 55 11.3 10.1 31.85 34.5 8.08 31.74 563.3 4.21 484.4 7.53 48.76 7.04 441 1743 48.6 0.8598 "5H-5, 140-150" 55 12.0 12.6 41.35 34.5 7.92 32.96 562.4 0.33 479.1 7.58 47.75 6.92 581 1855 41.2 0.8519 "6H-1, 140-150" 55 10.0 13.5 44.85 34.5 7.92 30.55 561.4 0.85 478.0 7.84 47.57 6.33 439 2001 30.1 0.8515 "7H-5, 140-150" 55 - 17.6 60.35 34.5 8.03 26.53 561.4 0.31 477.0 6.99 45.48 6.83 576 1306 8.5 0.8496 "8H-6, 140-150" 50 12.2 20.5 71.35 34.0 7.91 25.67 559.5 0.11 477.7 6.42 42.42 8.23 320 1190 5.7 0.8538 "9H-4, 140-150" 55 12.9 22.2 77.85 34.0 7.86 23.77 561.5 1.76 485.3 6.67 39.53 8.84 469 1295 8.2 0.8644 "10H-5, 140-150" 55 12.5 25.1 88.85 34.0 7.87 22.70 560.5 1.08 484.6 7.14 37.51 9.26 544 1418 10.3 0.8647 "11H-5, 140-150" 55 12.7 27.5 98.35 33.5 7.69 19.22 562.6 1.57 487.0 6.67 35.47 10.17 516 1392 7.9 0.8657 Post-MST samples: "4H-3, 140-150" 37 18.7 9.4 28.85 34.5 7.57 27.01 561.4 4.01 475.3 7.68 49.64 7.07 458 1634 23.9 0.8467 "6H-2, 60-70" 50 19.5 13.7 45.55 34.0 7.74 30.57 557.5 0.49 473.7 7.55 47.49 6.42 535 1924 40.3 0.8497 "8H-6, 130-140" 35 18.9 20.4 71.25 33.5 7.80 25.12 558.5 0.55 478.4 6.59 41.81 8.07 335 1222 9.1 0.8565 "10H-3, 110-120" 55 19.4 24.2 85.55 33.5 7.72 21.86 557.6 0.55 480.0 7.11 37.79 8.92 646 1365 10.3 0.8609 168-1026C- "4R-1, 45-128" 26 - 31.8 114.71 32.0 7.70 5.18 552.7 0.89 471.3 4.45 30.37 11.60 321 1097 3.5 0.8527 "5R-1, 135-150" 48 - 34.4 124.53 32.5 7.72 6.99 561.5 0.68 484.8 5.28 22.06 17.81 100 1145 33.7 0.8635 "7R-1, 128-148" 46 - 39.4 143.68 33.0 7.70 3.17 563.5 3.46 482.4 3.28 16.64 27.29 755 1151 2.0 0.8562 "8R-1, 63-78" 55 - 41.8 152.71 33.0 7.29 1.82 561.1 3.88 480.5 2.78 13.36 30.34 101 799 54.4 0.8564 "9R-1, 135-150" 50 - 44.5 163.03 34.0 8.06 1.10 561.5 5.56 477.3 2.06 9.82 37.37 379 953 4.2 0.85 "10R-2, 135-150" 30 - 47.4 174.13 34.0 8.11 0.89 561.5 9.18 476.4 1.75 6.29 45.01 245 774 3.3 0.8485 "10R-5, 135-150" 32 - 48.5 178.63 34.0 8.00 0.37 561.5 10.06 471.6 1.46 6.15 47.13 226 629 3.8 0.84 "12R-1, 130-150" 48 - 52.0 191.90 34.0 8.29 0.53 556.6 11.75 460.7 1.68 5.63 52.51 188 538 3.3 0.8277 "13R-4, 130-150" 42 - 55.7 206.00 34.0 7.77 0.33 551.7 13.90 451.8 1.63 5.50 57.69 252 354 0.6 0.819 "14R-4, 130-150" 50 - 58.2 215.60 34.5 8.16 0.55 555.1 13.87 452.2 2.16 5.63 58.90 210 301 0.6 0.8146 "15R-1, 81-104" 49 - 59.4 220.23 35.0 7.85 0.36 550.8 14.10 442.7 2.24 5.87 61.33 176 247 0.8 0.8037 "15R-2, 66-86" 46 - 59.8 221.56 34.5 8.63 0.84 552.7 14.75 451.0 2.47 5.76 61.36 94 286 0.4 0.8161 "15R-3, 59-79" 60 - 60.2 222.99 34.5 8.57 0.29 551.7 14.62 444.3 2.50 5.34 61.88 155 218 1.1 0.8053 "15R-4, 130-150" 38 - 60.7 225.20 35.0 8.24 0.42 553.7 14.09 443.1 2.64 5.01 63.24 169 206 0.6 0.8003 "15R-5, 45-65" 40 - 60.9 225.85 35.0 8.03 0.32 550.8 14.81 445.3 2.71 4.85 61.49 159 220 1.1 0.8086 "15R-6, 70-90" 50 - 61.4 227.60 35.0 8.01 0.29 553.7 15.09 450.2 2.62 4.60 61.08 149 194 0.8 0.8131 "15R-7, 25-45" 30 - 61.6 228.65 35.0 8.00 0.35 551.3 14.43 437.3 2.38 4.64 65.72 173 171 0.8 0.7934 Basement at: 61.7 228.9 168-1026B- WSTP-1 Prime 10 - 63.8 256 - - 554.2 17.28 465.5 6.56 2.18 56.17 427 118 0.5 0.8400 Overflow 353 - 63.8 256 6.83 1.70 464.8 17.08 466.5 6.72 2.74 55.69 985 81 1.2 0.8417 WSTP-2 Prime 10 - 63.8 256 - - 550.8 16.73 461.0 6.57 2.21 56.13 759 124 1.3 0.8370 Overflow 1005 - 63.8 256 7.30 0.63 526.7 17.04 461.5 6.53 2.53 56.19 1062 87 1 0.8379 Basement at: 61.4 247.1 Baby Bare Springs: 25.0 8.33 0.43 554.4 17.8 473 7.05 0 55.2 76 0.4 0.853 Basement age = 3.516 Ma 168-1027B- "1H-1, 140-150" 55 3.9 1.9 1.45 34.5 7.74 5.18 541.3 26.16 468.2 11.68 49.45 9.98 679 208 32.2 0.8650 "1H-2, 140-150" 55 4.8 2.1 2.95 35.0 7.75 7.26 543.2 25.13 469.8 12.06 49.56 9.87 701 384 53.5 0.8649 "3H-1, 140-150" 55 8.9 3.3 15.15 35.5 7.70 20.76 552.2 15.31 467.1 9.14 53.56 10.09 462 1174 29.7 0.8459 "3H-2, 140-150" 55 9.2 3.5 16.65 35.5 7.80 24.02 553.2 15.96 474.0 8.72 53.40 9.80 484 1186 39.1 0.8569 "3H-3, 140-150" 55 9.6 3.6 18.15 35.5 7.80 23.81 553.8 15.25 471.5 8.68 54.21 9.74 396 1222 30.5 0.8514 "3H-4, 140-150" 55 8.8 3.8 19.65 35.5 7.75 24.19 554.6 14.58 473.6 8.42 53.31 9.67 447 1252 26.9 0.8539 "3H-5, 140-150" 55 6.5 3.9 21.15 35.5 7.70 24.17 553.6 14.67 474.2 8.31 53.18 9.12 409 1270 10.3 0.8566 "4H-3, 140-150" 55 9.8 4.5 27.65 36.0 7.55 25.61 554.6 11.85 472.9 7.46 53.58 8.19 392 1349 2.2 0.8527 "5H-2, 140-150" 55 7.9 5.3 35.65 36.0 7.82 26.83 553.6 10.77 473.6 7.77 52.40 7.93 367 1474 16.1 0.8554 "6H-5, 140-150" 55 9.2 6.7 49.65 36.0 7.73 27.31 555.6 9.62 475.0 8.31 51.38 8.05 420 1454 25.1 0.8549 "7H-3, 0-18" 55 10.2 7.2 54.79 36.0 7.64 28.11 555.6 10.18 476.8 8.39 49.72 9.70 512 1306 38.7 0.8582 "8H-1, 140-150" 55 8.6 8.0 62.65 35.5 7.54 26.95 552.2 10.53 473.9 8.16 48.80 10.28 514 1096 28.3 0.8582 "17X-2, 130-140" 55 8.2 16.5 148.35 34.0 7.61 24.21 547.8 6.34 469.9 7.59 47.72 5.89 843 1216 31.9 0.8578 "19X-2, 0-12" 55 8.3 18.3 166.26 33.5 7.74 29.49 550.7 1.72 477.4 8.83 42.65 6.04 655 1929 20.9 0.8669 "22X-1, 135-150" 40 - 21.2 194.93 33.5 7.87 29.17 547.2 0.69 476.8 7.32 40.23 6.57 827 2241 41.3 0.8714 "22X-3, 135-150" 55 - 21.5 197.93 33.5 7.57 26.13 548.8 0.59 475.7 8.16 39.85 6.27 908 2295 23.4 0.8668 "23X-1, 85-100" 20 7.9 22.1 204.13 33.0 7.76 25.90 549.1 0.46 478.1 7.82 37.90 7.11 653 2249 15.1 0.8706 "25X-1, 135-150" 20 8.6 24.0 223.83 33.0 7.78 23.07 544.0 0.78 473.4 7.59 35.23 8.58 650 2230 13.0 0.8703 "26X-2, 135-150" 24 8.6 25.2 234.93 32.5 7.83 19.88 546.9 1.11 476.3 8.04 33.96 8.34 863 2283 9.3 0.8710 "27X-1, 135-150" 47 - 26.0 243.03 32.5 7.80 17.18 548.8 1.06 476.7 8.12 33.65 7.96 901 2338 7.9 0.8687 "28X-4, 135-150" 46 - 27.4 257.23 32.5 7.85 13.81 549.8 0.48 474.3 7.44 32.32 9.06 540 2302 2.6 0.8628 "29X-5, 135-150" 28 - 28.5 268.33 32.5 7.85 12.30 547.8 1.67 473.7 7.40 30.90 10.26 609 2288 3.6 0.8648 "30X-5, 135-150" 48 - 29.4 277.93 32.5 7.83 11.39 551.7 1.48 477.9 7.03 29.57 10.98 892 2320 3.9 0.8662 "31X-5, 135-150" 15 - 30.4 287.53 32.0 7.80 8.83 550.8 3.06 477.6 6.52 29.25 11.53 836 2162 5.9 0.8672 "32X-5, 135-150" 44 - 31.3 297.23 32.0 7.70 6.87 546.9 0.84 469.4 5.22 27.48 12.92 512 1917 2.2 0.8583 "33X-5, 130-150" 42 - 32.3 306.80 32.0 7.80 5.29 548.3 0.46 467.8 4.11 26.91 14.40 424 1740 1.2 0.8532 "34X-5, 135-150" 50 - 33.3 316.53 32.0 7.70 5.11 549.3 0.92 471.3 3.65 24.99 15.64 1072 1754 2.2 0.8581 "35X-2, 130-150" 42 8.6 33.8 321.60 32.0 7.96 3.90 550.2 0.91 470.3 2.99 24.48 16.85 310 1526 1.2 0.8547 "36X-5, 130-150" 38 - 35.2 335.80 32.0 8.09 2.99 547.8 0.91 467.2 2.33 22.61 18.94 227 1406 1.6 0.8528 "37X-5, 130-150" 18 - 36.1 345.40 32.0 8.00 2.76 549.2 0.86 468.9 2.03 21.70 19.70 318 1331 2.2 0.8537 "38X-5, 130-150" 32 - 37.1 355.1 32 7.94 2.99 552.6 0.56 471.9 1.78 20.68 20.82 439 1239 0.9 0.8540 "39X-5, 125-150" 38 - 38 364.68 32 7.93 2.29 551.3 0.49 467.9 1.67 20.50 21.99 285 1130 1.6 0.8488 "40X-5, 125-150" 45 - 39 374.38 32 8.08 3.00 554.5 0.89 474.7 1.70 19.51 21.92 266 1242 1.6 0.8561 "41X-2, 125-150" 40 - 39.5 379.48 32 8.04 2.57 560.8 0.03 478.9 1.60 19.14 22.35 281 1172 1.2 0.8539 "42X-5, 125-150" 35 - 40.9 393.58 32 8.26 2.34 555.8 0.42 473.8 1.22 19.05 22.93 173 1100 1.6 0.8524 "43X-5, 125-150" 29 - 41.9 403.18 32 8.16 1.89 554.7 0.3 472.3 1.39 17.88 23.85 216 1034 1.2 0.8515 "44X-5, 125-150" 42 - 42.8 412.78 32 7.83 2.16 555.5 0.35 473.5 1.42 17.56 24.17 295 1019 1.9 0.8523 "45X-5, 125-150" 55 - 43.8 422.38 32 7.83 1.70 551.7 0.68 470.6 1.35 17.32 24.06 316 910 1.2 0.8531 "46X-3, 125-150" 44 - 44.4 428.98 32 8.08 2.22 551.7 0.25 470.5 1.18 16.38 25.00 243 878 2.9 0.8528 "47X-5, 125-150" 55 - 45.7 441.58 32 8.17 2.14 553.6 0.25 473.7 1.32 15.30 25.33 206 941 1.9 0.8556 "48X-5, 125-150" 42 - 46.7 451.28 32 8.24 1.35 549.2 0.55 469.6 1.27 14.79 25.61 177 877 0.9 0.8550 "49X-5, 125-150" 50 - 47.6 460.88 32 8.34 1.61 552.3 0.69 473.7 1.33 14.24 25.90 161 840 1.9 0.8577 "50X-5, 125-150" 22 - 48.6 470.38 32 8.13 1.54 552.2 0.41 471.5 1.03 14.15 26.86 183 828 1.3 0.8539 "51X-5, 125-150" 40 - 49.5 479.98 32 8.1 2.04 551.2 0.88 471.6 1.08 13.88 27.25 237 831 0.8 0.8557 "52X-5, 125-150" 42 - 50.5 489.58 32 8.18 2.07 553.8 0.74 474.6 1.22 13.08 27.67 231 801 0.8 0.8570 "53X-5, 125-150" 42 - 51.4 499.08 32 8.34 1.52 545.9 1.58 468.8 1.37 11.85 27.71 181 844 1.1 0.8587 "54X-5, 125-150" 25 - 52.4 508.68 32 6.72 9.52 545.9 0.8 472.5 1.82 11.24 29.10 807 958 1.3 0.8655 "55X-5, 125-150" 20 - 53.3 518.38 32 8.24 1.19 546.9 0.63 463.0 1.34 10.48 31.56 118 698 1.1 0.8466 "56X-5, 125-150" 34 - 54.3 527.98 32 8.11 0.99 551.7 1.04 465.8 1.42 9.96 34.03 97 660 1.0 0.8443 "57X-2, 125-150" 42 - 54.8 533.18 32 7.96 1.15 551.7 1.34 463.3 1.29 9.08 36.58 173 526 0.6 0.8399 "57X-6, 125-150" 20 - 55.4 539.18 32.5 8.47 0.74 553.6 2.78 468.9 1.52 8.51 36.73 79 583 0.5 0.8470 "58X-5, 125-150" 32 - 56.2 547.28 32.5 8.41 0.82 552.7 2.86 459.1 1.30 7.55 41.50 111 478 1.0 0.8308 "59X-5, 125-150" 16 - 57.2 556.88 32.5 8.54 1.07 551.7 4.2 456.2 1.52 7.35 45.89 91 406 0.6 0.8269 "60X-2, 125-150" 22 - 57.7 561.98 33 8.32 0.68 559.4 6.99 466.7 2.15 7.11 46.30 93 343 0.8 0.8344 "60X-3, 125-150" 26 - 57.8 563.48 32.5 8.44 1.39 553.1 6.07 457.5 1.97 6.10 49.12 89 360 0.8 0.8271 "60X-4, 125-150" 22 - 58 564.98 33 8.5 0.65 553.6 6.25 458.4 1.95 6.10 48.38 77 331 0.3 0.8281 "60X-5, 125-150" 36 - 58.1 566.48 33.5 8.12 0.48 556.5 6.11 456.8 1.76 5.70 50.04 111 339 0.3 0.8208 "60X-6, 125-150" 35 - 58.3 567.98 33 8.19 1.06 548.0 7.25 448.5 1.80 6.63 50.66 156 315 0.8 0.8184 168-1027C- "1R-6, 117-131" 18 - 60.6 591.75 34.5 7.96 0.43 553.7 14.49 441.8 2.71 6.22 62.32 114 162 0.4 0.7980 "2R-2, 130-150" 40 - 61.1 596.36 34.5 8.62 0.52 554.7 14.99 443.6 2.88 5.90 65.45 96 160 0.4 0.7998 "2R-4, 130-150" 40 - 61.4 599.36 34.5 8.46 0.49 551.8 14.37 438.8 2.64 5.18 65.94 92 155 0.4 0.7952 "2R-6, 125-150" 32 - 61.7 602.36 34.5 9.06 0.48 550.8 14.47 445.9 3.28 4.98 62.47 70 160 0.4 0.8096 "3R-1, 86-100" 1 - 61.9 605.03 35.0 - - 547.8 17.51 - 2.72 4.54 - 80 130 0.4 - Basement at: 62.8 613.8 Baby Bare Springs: 25 8.33 0.43 554.4 17.8 473 7.05 0 55.2 76 0.4 0.853 Basement age = 3.586 Ma "Notes: T = temperature, and R.I. = refractive index. - = not determined. Mg concentrations reported for Sections 168-1026-9R-1 and below and 1027B-53X-5 and below were determined by flame atomic absorption spectrophotometry " "rather than titrimetry. Aliquot from overflow chamber, with pH and chlorinity reported as measured; all other values have been corrected to the chlorinity of the prime aliquot, from the titanium coil."