"Table 10. Composition of pore waters from sediments from Sites 1028, 1029, 1030, 1031, and 1032." "Core, section, " Volume In situ T Depth Salinity Alkalinity Chlorinity Sulfate Na K Mg Ca Si NH3 PO4 interval (cm) (mL) (deg C) (mbsf) "(R.I.,%) " pH (meq/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) (mmol/kg) Na/Cl 168-1028A- "1H-1, 140-150" 50 2.3 1.45 35.0 8.01 5.13 541.5 25.85 470.4 11.61 48.37 9.80 587 138 17.1 0.8687 "1H-2, 140-150" 40 2.9 2.95 35.0 7.90 6.85 542.0 23.72 469.0 11.37 48.16 9.78 546 375 15.9 0.8654 "2H-3, 150-160" 50 4.8 8.25 34.5 7.63 13.77 547.3 13.51 470.2 10.37 44.88 8.88 509 952 16.1 0.8591 "3H-2, 140-150" 50 7.7 16.15 34.0 7.83 22.24 553.0 5.33 474.7 10.10 43.11 7.43 424 1370 33.3 0.8584 "4H-5, 140-150" 45 12.9 30.15 34.0 7.69 19.24 557.6 2.55 478.8 10.27 39.41 7.03 766 1492 42.2 0.8587 "5H-5, 140-150" 50 16.4 39.65 33.5 7.55 13.12 556.6 2.71 476.4 9.37 36.66 8.05 717 1300 14.0 0.8558 "6H-5, 140-150" 50 19.9 49.15 33.0 7.56 9.78 557.6 3.01 476.9 8.41 34.16 9.88 576 1532 9.8 0.8553 "7H-5, 140-150" 50 23.4 58.65 32.5 7.87 7.51 559.3 3.39 479.5 7.30 32.09 11.28 511 1431 4.3 0.8574 "8H-5, 140-150" 50 26.8 68.15 33.0 7.75 5.35 556.4 3.94 474.7 6.01 31.35 13.06 354 1336 1.3 0.8533 "9H-5, 135-150" 50 30.3 77.63 33.0 7.85 4.40 561.0 5.96 481.0 5.09 28.23 17.38 366 1260 1.1 0.8574 "10H-5, 135-150" 50 33.8 87.13 33.5 7.75 3.68 558.5 7.93 476.2 4.35 27.04 21.71 427 1082 1.0 0.8526 "11H-5, 135-150" 50 37.3 96.63 33.5 7.67 1.91 558.6 9.22 478.1 4.32 23.87 24.36 541 1046 0.7 0.8560 "12H-5, 135-150" 50 40.8 106.13 34.0 7.65 2.37 558.1 10.52 474.0 3.41 21.98 30.06 516 691 1.0 0.8493 "13X-2, 135-150" 50 42.6 111.13 33.5 7.61 1.50 552.7 12.05 467.5 3.76 22.05 31.48 479 635 0.8 0.8458 "13X-5, 135-150" 36 44.2 115.50 33.5 - 1.31 554.6 12.27 469.1 3.55 20.29 33.62 467 616 0.8 0.8458 "15X-1, 135-150" 25 47.8 125.23 34.0 7.91 1.31 552.1 13.86 464.1 3.52 17.06 39.70 238 486 0.5 0.8406 "15X-2, 135-150" 35 48.4 126.73 34.0 7.68 0.73 550.7 14.17 463.3 3.70 17.01 39.36 258 447 0.5 0.8413 "15X-3, 135-150" 18 48.9 128.23 34.0 8.10 0.78 554.2 14.06 465.1 4.05 16.47 40.51 129 517 0.8 0.8392 "15X-4, 135-150" 40 49.5 129.73 34.0 7.86 0.77 550.9 14.69 463.6 3.86 16.58 40.17 216 460 0.7 0.8417 "15X-6, 0-15" 40 50.1 131.38 34.0 8.08 0.38 549.0 15.01 462.3 4.32 16.02 40.36 131 490 0.4 0.8421 Basement at: 50.5 132.5 Basement age = 1.62 Ma 168-1029A- "1H-2, 140-150" 55 2.6 2.95 34.5 7.87 7.46 542.6 19.70 468.8 11.05 48.57 9.69 469 341 19.6 0.8640 "2H-2, 140-150" 55 3.7 7.45 34.5 7.92 14.04 546.2 13.31 470.9 10.74 46.30 8.66 485 861 24.4 0.8621 "2H-5, 140-150" 55 4.9 11.95 34.0 7.68 17.90 549.4 8.67 470.8 10.29 45.49 7.82 481 1169 39.3 0.8569 "3H-5, 140-150" 7 7.3 21.45 33.5 8.10 21.27 548.1 3.76 469.4 11.18 42.93 5.87 400 1408 24.6 0.8565 "4H-5, 140-150" 55 9.8 30.95 33.5 7.97 21.63 556.2 1.42 475.5 10.46 41.87 5.74 703 1515 44.3 0.8549 "5H-4, 140-150" 55 11.9 38.95 33.5 8.08 19.60 556.2 0.98 476.9 9.63 40.70 5.10 603 1518 30.9 0.8574 "6H-5, 140-150" 55 14.7 49.95 33.0 8.00 17.66 558.0 0.44 479.6 9.29 38.03 5.89 680 1630 30.6 0.8594 "7H-2, 140-150" 55 16.0 54.95 33.0 8.06 16.08 560.5 0.53 482.9 8.92 36.82 6.20 570 1717 16.3 0.8615 "8H-1, 140-150" 55 18.1 62.95 33.0 8.00 14.52 560.2 0.62 481.8 8.64 35.56 7.32 767 1822 17.3 0.8601 "9H-1, 140-150" 55 20.5 72.45 33.0 8.01 12.47 559.6 0.57 480.2 7.95 34.46 8.19 618 1855 10.3 0.8580 "10H-1, 140-150" 22 23.0 81.95 33.0 8.08 9.13 555.2 1.25 477.0 7.79 32.63 8.59 553 1893 2.3 0.8592 "11H-2, 140-150" 50 25.8 92.95 33.0 8.02 7.54 559.8 0.00 480.1 6.73 29.20 10.97 551 1747 4.0 0.8577 "12H-3, 140-150" 55 28.7 103.95 33.0 7.76 6.69 560.5 0.46 483.2 5.46 25.77 14.02 812 1538 3.8 0.8621 "13X-2, 135-150" 55 30.7 111.93 32.5 7.83 4.81 558.6 2.46 482.4 4.83 24.97 16.02 647 1413 1.8 0.8636 "16X-2, 135-150" 50 36.3 133.33 33.0 7.99 2.89 559.5 1.53 480.9 2.46 19.21 22.08 384 1042 1.2 0.8596 "17X-2, 130-150" 50 38.7 142.90 33.0 7.76 1.36 560.5 2.54 481.9 2.14 17.24 24.65 433 946 0.9 0.8598 "18X-2, 130-150" 50 41.2 152.50 33.0 7.85 1.41 559.5 4.37 479.5 1.92 15.52 29.38 353 785 0.8 0.8570 "19X-2, 130-150" 45 43.7 162.10 34.0 7.98 1.17 560.5 6.06 478.7 1.72 13.46 34.29 288 664 0.8 0.8540 "20X-2, 130-150" 42 46.2 171.70 33.5 8.06 1.09 558.6 8.41 476.9 1.83 10.51 39.87 313 557 0.8 0.8537 "21X-2, 130-150" 50 48.7 181.30 34.5 7.97 0.60 559.5 10.90 477.0 1.93 8.80 44.59 313 569 0.8 0.8526 "22X-2, 130-150" 32 51.3 190.90 34.5 8.12 0.60 561.9 12.30 473.2 2.28 9.24 48.73 261 395 0.6 0.8422 "22X-6, 130-150" 20 52.7 196.90 35.0 7.83 0.65 557.7 13.71 466.5 2.12 9.45 51.52 263 316 0.6 0.8366 "23X-2, 130-150" 42 53.6 200.50 35.0 8.04 0.72 555.0 14.44 462.3 2.49 10.28 52.19 282 255 0.4 0.8329 "23X-6, 130-150" 40 55.2 206.50 35.0 7.92 0.71 556.9 15.36 465.5 2.96 10.13 52.48 261 240 0.4 0.8359 "24X-4, 125-150" 42 56.9 213.10 35.5 8.36 0.74 557.7 17.04 466.1 4.04 10.66 53.54 238 297 0.4 0.8357 "24X-5, 125-150" 34 57.3 214.60 35.5 8.15 0.95 553.1 17.26 460.2 4.58 10.82 54.12 236 200 0.4 0.8320 "24X-6, 125-150" 32 57.7 216.10 35.5 8.03 0.53 555.0 17.31 457.8 3.42 9.76 57.74 212 153 0.4 0.8249 "25X-1, 125-150" 35 58.2 218.20 35.5 8.06 0.42 555.0 18.48 463.7 5.11 10.12 54.90 179 143 0.3 0.8356 "25X-2, 125-150" 40 58.6 219.70 35.0 7.95 0.79 548.0 17.69 451.5 4.66 12.67 54.46 208 115 0.4 0.8239 Basement at: 58.7 220.1 Basement age = 1.95 Ma 168-1030B- "1H-1, 140-150" 30 3.0 1.45 35.0 7.85 3.00 543.0 24.02 471.3 11.52 31.70 23.92 493 191 1.5 0.8679 "1H-2, 140-150" 30 4.2 2.95 35.0 7.85 3.26 549.0 22.54 477.4 10.36 21.07 33.72 449 367 0.7 0.8696 "1H-3, 74-84" 30 4.9 3.79 34.5 7.77 2.55 550.8 21.59 479.2 10.66 15.92 37.42 499 436 0.9 0.8700 "2H-1, 140-150" 30 6.3 5.45 35.5 7.80 2.40 558.2 20.02 479.6 9.64 9.79 45.92 571 623 0.7 0.8591 "2H-2, 140-150" 30 7.5 6.95 35.0 7.70 2.20 559.1 21.12 482.5 9.22 8.64 47.27 552 798 0.6 0.8630 "2H-3, 140-150" 30 8.7 8.45 35.5 7.74 2.22 558.2 20.44 480.4 9.12 8.63 47.27 565 764 0.7 0.8605 "2H-4, 140-150" 30 9.9 9.95 35.5 7.78 2.40 561.0 20.45 478.1 8.33 7.73 51.21 546 795 0.9 0.8522 "2H-5, 140-150" 30 11.2 11.45 35.5 7.72 2.18 562.5 20.96 482.4 8.58 7.49 50.35 744 784 1.0 0.8575 "2H-6, 140-150" 30 12.4 12.95 35.5 7.67 2.30 563.2 20.71 481.4 7.95 6.99 51.78 806 772 1.3 0.8548 "2H-7, 62-72" 30 13.0 13.67 36.0 7.65 2.09 562.3 21.35 482.1 8.04 6.13 52.36 814 800 1.0 0.8573 "3H-2, 140-150" 30 15.2 16.45 35.5 7.69 1.96 561.8 20.63 479.9 7.99 7.65 50.92 573 739 0.7 0.8542 "3H-4, 140-150" 30 17.7 19.45 36.0 7.73 1.91 562.3 21.41 478.1 7.56 6.99 53.70 755 654 1.2 0.8502 "3H-6, 140-150" 30 20.1 22.45 36.0 7.77 1.72 563.2 21.92 479.2 7.31 6.38 54.76 827 553 1.3 0.8508 "4H-2, 140-150" 30 23.0 25.95 36.0 7.87 1.16 562.3 22.27 477.0 6.61 6.54 55.68 624 482 1.0 0.8482 "4H-4, 140-150" 30 25.5 28.95 36.0 7.54 0.75 561.8 21.98 475.8 6.33 6.38 55.82 565 360 0.9 0.8469 "4H-6, 140-150" 30 27.9 31.95 36.0 7.54 0.61 560.5 22.45 476.2 6.00 5.72 56.20 504 320 0.6 0.8495 "5H-2, 140-150" 30 30.8 35.45 36.0 7.52 0.59 561.0 22.96 476.0 5.81 6.17 56.68 438 278 0.6 0.8485 "5H-4, 140-150" 30 33.2 38.45 36.0 7.69 0.56 562.3 22.45 474.4 5.72 5.68 58.13 362 216 0.6 0.8437 "5H-6, 140-150" 30 35.7 41.45 36.0 7.39 0.36 558.6 22.44 471.7 5.63 5.88 57.36 373 185 0.5 0.8445 "6X-CC, 0-20" 30 35.8 41.65 35.5 7.91 0.46 559.0 22.33 473.3 5.24 5.68 57.12 221 206 0.4 0.8467 Basement at: 40.1 46.9 Basement age = 1.43 Ma 168-1031A- "1H-1, 140-150" 50 3.2 1.45 35.5 7.78 2.52 553.6 24.07 477.3 9.76 20.20 38.41 575 190 2.4 0.8622 "1H-2, 140-150" 50 4.6 2.95 35.5 7.72 1.79 558.7 24.58 482.0 9.35 15.01 44.13 580 212 1.2 0.8628 "1H-3, 140-150" 50 6.0 4.45 35.5 7.73 1.66 559.1 23.69 480.4 8.97 11.54 47.83 597 233 0.9 0.8593 "1H-4, 140-150" 50 7.4 5.95 36.0 7.70 1.38 561.9 23.81 482.5 8.91 9.88 49.87 563 250 0.7 0.8587 "2H-5, 140-150" 50 8.8 7.45 36.0 7.67 1.24 562.8 23.20 481.3 8.50 8.64 51.69 567 241 0.9 0.8552 "2H-2, 140-150" 50 12.8 11.75 36.0 7.64 1.10 563.7 23.37 481.1 7.60 7.16 54.28 480 232 0.6 0.8534 "3H-5, 130-150" 50 16.9 16.20 36.0 7.64 0.98 563.7 23.15 478.7 7.03 6.62 56.01 656 216 0.9 0.8492 "4H-5, 140-150" 50 25.9 25.75 36.0 7.47 0.51 562.5 23.90 477.9 6.35 6.21 57.07 487 178 0.6 0.8496 "4H-2, 140-150" 50 30.6 30.75 36.0 8.05 0.37 560.3 24.12 471.7 5.94 5.33 59.18 406 156 0.3 0.8418 "5H-5, 140-150" 50 34.8 35.25 36.0 7.41 0.39 560.3 23.45 470.8 5.23 5.44 59.47 358 138 0.4 0.8403 "5H-1, 140-150" 50 38.0 38.75 36.0 7.87 0.53 557.7 23.23 470.0 5.29 4.44 60.24 295 114 0.4 0.8428 "5H-2, 140-150" 50 39.4 40.25 36.0 7.96 0.39 557.7 23.42 469.8 5.29 4.65 60.27 257 100 0.3 0.8424 Basement at: 40.4 41.3 Basement age = 1.43 Ma 168-1032A- "2R-1, 130-150" 20 39.0 195.50 32.0 8.00 3.28 551.3 1.71 472.8 2.57 21.65 19.65 392 1182 0.8 0.8577 "3R-1, 130-150" 36 40.9 205.10 32.0 7.82 1.48 553.6 0.53 472.8 2.50 17.63 22.77 277 1024 0.6 0.8541 "5R-2, 130-150" 30 44.8 225.80 32.0 7.84 0.99 553.1 1.91 470.7 1.47 11.54 31.35 314 769 0.6 0.8510 "6R-2, 130-150" 48 46.6 235.40 32.5 8.00 0.86 555.0 3.88 471.2 1.64 10.39 34.99 258 748 0.4 0.8490 "7R-2, 130-150" 40 48.5 245.00 33.5 8.26 1.11 553.1 5.53 464.3 1.35 8.71 41.12 246 544 0.6 0.8394 "8R-2, 130-150" 38 50.3 254.60 33.5 8.33 0.61 555.9 6.83 469.0 1.69 6.82 42.95 143 590 0.4 0.8436 "10R-1, 43-63" 35 53.5 271.53 34.5 7.96 0.63 555.9 11.36 462.0 2.01 6.17 51.47 194 393 0.4 0.8311 "10R-2, 88-108" 33 53.9 273.48 34.5 7.75 0.40 552.7 11.35 455.9 1.78 6.34 52.72 186 322 0.4 0.8249 "10R-3, 130-150" 33 54.3 275.40 34.5 8.24 0.64 555.9 12.05 459.7 2.11 5.86 53.58 176 334 0.4 0.8269 "10R-4, 30-50" 40 54.4 275.90 34.5 8.51 0.46 556.8 12.25 463.6 2.71 5.31 52.44 934 23 0.4 0.8326 "11R-1, 130-150" 40 55.5 282.00 34.5 7.73 0.52 553.1 13.54 452.6 2.37 5.37 57.51 198 237 0.2 0.8182 "11R-2, 130-150" 50 55.8 283.50 35.0 7.75 0.54 552.7 14.85 453.8 2.58 5.06 58.23 223 211 0.4 0.8210 "11R-3, 130-150" 50 56.1 285.00 35.0 8.22 0.27 555.4 16.76 457.7 2.98 2.79 61.44 155 142 0.4 0.8242 Basement at: 57.1 290.3 Basement age = 2.62 Ma "Notes: T = temperature, R.I.= refractive index, and - = not determined. Mg concentrations reported for Sections 168-1030B-1H-3 and below and 1031A-1H-5 and below were determined by flame atomic absorption spectrophotometry rather than titrimetry."