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Table T7. Chemical composition of interstitial waters, Hole U1357C. (See table notes.)

Core, section,
interval (cm)
Depth
(mbsf)
pH Salinity Cl
(mM)
Na
(mM)
SO42–
(mM)
NH4+
(µM)
Alkalinity
(mM)
DIC
(mM)
PO43–
(µM)
Mg
(mM)
Ca
(mM)
K
(mM)
Si
(µM)
P
(µM)
Sr
(µM)
Ba
(µM)
B
(µM)
318-U1357C-
1H-1, 10–20 0.10 7.63 34.0 543.6 458.3 5.2 954.0 50.0 39.8 334.7 53.0 10.5 10.6 393.5 415.6 21.6 18.8 327.9
1H-1, 30–40 0.30 7.89 34.5 553.9 470.6 3.5 1038.9 55.5 45.4 424.3 54.7 10.9 10.6 445.5 220.9 24.0 7.7 244.2
1H-1, 50–60 0.50 7.78 35.0 550.5 466.9 2.3 920.1 58.4 48.3 451.7 54.4 10.8 10.6 398.5 382.4 21.0 17.9 307.1
1H-1, 70–80 0.70 7.79 35.5 558.6 474.5 0.0 1008.0 62.0 50.2 461.5 55.1 11.0 11.1 461.3 254.3 26.0 13.3 284.5
1H-1, 90–100 0.90 7.76 35.0 546.9 466.3 0.0 1308.9 62.0 51.0 457.0 53.8 10.8 10.8 403.8 364.9 26.1 20.1 309.8
1H-2, 20–30 1.20 7.76 35.5 555.4 472.0 0.0 1151.5 63.2 52.8 444.1 55.0 10.9 9.7 458.4 266.7 26.2 20.6 288.1
1H-2, 40–50 1.40 7.75 35.5 553.1 469.3 0.0 1058.9 61.4 51.4 374.9 54.7 10.9 10.8 477.9 268.3 27.3 21.7 295.1
1H-2, 60–70 1.60 7.73 35.5 552.3 469.1 0.0 998.8 64.3 52.6 362.0 54.7 10.9 10.9 452.5 271.1 25.7 23.0 287.6
1H-2, 80–90 1.80 7.72 35.5 554.9 471.3 1.8 1035.8 62.5 51.9 414.4 55.0 10.9 11.1 459.7 270.9 27.4 23.2 293.0
1H-3, 0–10 2.00 7.68 34.5 550.0 466.9 1.0 1830.3 65.5 215.9 485.8 53.7 10.7 10.8 398.6 401.6 21.0 18.9 313.4
1H-3, 20–30 2.20 7.7 36.0 553.9 470.7 1.5 989.5 62.7 52.4 434.2 54.9 11.0 11.0 460.1 273.4 26.9 23.1 294.9
1H-3, 40–50 2.40 7.73 36.0 551.1 469.0 0.8 1220.9 65.3 54.1 408.4 54.8 10.9 11.1 461.6 280.7 27.0 24.2 298.0
1H-3, 60–70 2.60 7.7 35.5 543.4 461.5 0.0 1552.6 67.7 55.4 402.3 53.9 10.7 11.0 445.1 280.0 26.1 24.4 296.4
1H-3, 80–90 2.80 7.78 35.5 551.5 471.0 0.0 1503.3 65.7 51.7 500.3 54.9 10.9 11.5 392.9 380.4 23.9 20.3 310.3
1H-4, 0–10 3.00 NA 36.0 552.4 470.2 0.0 1324.3 67.5 56.1 318.0 55.0 11.0 11.3 441.3 282.5 24.8 24.6 293.5
1H-4, 20–30 3.20 7.72 35.5 551.4 468.9 0.0 1478.6 69.6 56.5 327.1 54.8 10.9 11.2 442.1 281.3 25.0 24.9 296.1
1H-4, 50–60 3.50 7.76 36.0 547.9 467.6 0.0 1412.2 70.6 57.7 554.2 54.6 10.9 11.2 458.5 290.4 25.3 25.5 302.1
1H-4, 70–80 3.70 7.75 36.0 550.7 469.8 0.0 1361.3 71.1 58.5 312.6 55.0 10.9 9.9 445.2 288.4 25.7 25.6 299.4
1H-4, 90–100 3.90 7.72 36.0 548.9 469.9 0.0 1295.0 71.0 59.3 329.3 55.0 11.0 11.5 445.5 293.0 25.2 25.6 300.8
1H-5, 20–30 4.20 NA NA 545.0 465.5 0.0 NA 0.0 60.1 NA 53.6 10.8 11.3 NA NA NA NA NA
1H-5, 50–60 4.50 7.73 36.0 543.8 464.7 0.0 1521.8 71.5 60.2 345.3 54.5 10.9 11.3 444.8 293.8 25.1 25.3 304.0
1H-5, 80–90 4.80 7.72 36.0 543.4 464.2 0.0 1708.5 73.7 58.8 346.1 53.9 10.9 11.3 451.4 303.5 26.2 25.7 311.3
1H-6, 10–20 5.10 NA 34.0 540.8 460.9 0.0 2614.1 NA 62.8 562.6 53.6 10.7 11.2 NA NA NA NA NA
1H-6, 40–50 5.40 7.74 36.0 545.7 466.8 0.0 1748.6 74.0 61.1 329.3 54.9 10.9 11.2 431.1 294.3 23.6 24.3 299.5
1H-6, 70–80 5.70 7.78 36.0 NA NA 0.0 1816.5 73.7 62.4 355.9 NA NA NA 447.8 310.1 25.4 25.0 313.7
1H-7, 20–30 6.20 7.79 35.5 538.5 458.4 0.0 1777.9 75.9 60.9 380.2 53.6 10.8 11.0 432.5 316.2 23.3 23.4 289.9
1H-7, 70–80 6.70 7.78 36.0 546.3 465.9 0.0 1629.8 73.7 64.0 376.5 54.8 11.0 11.8 429.0 311.3 23.5 23.9 303.7
1H-8, 20–30 7.20 7.78 35.5 549.0 467.5 0.0 2331.8 75.6 64.6 400.0 54.8 11.1 11.4 413.6 303.3 24.0 23.6 287.7
1H-8, 80–90 7.70 7.75 36.0 544.0 466.0 0.0 2075.7 75.3 64.8 378.0 55.1 11.0 11.5 448.3 343.9 26.5 25.1 328.8
1H-8, 120–130 8.20 7.7 36.0 559.6 479.3 0.0 2478.3 76.9 63.4 608.2 56.2 11.3 11.7 506.2 297.1 24.3 24.0 289.5
2H-1, 10–20 8.90 7.69 36.0 547.6 473.5 0.0 2100.3 76.6 67.4 294.4 56.3 11.3 11.8 431.6 378.2 24.3 21.5 328.1
2H-1, 60–70 9.40 7.82 36.0 551.6 473.4 1.2 2739.1 75.6 64.6 384.0 55.5 11.3 11.8 465.0 277.2 27.1 24.5 287.5
2H-1, 110–120 9.90 7.65 36.0 543.8 467.9 2.9 1199.3 70.5 64.8 422.8 55.7 11.1 11.4 417.8 357.6 24.9 19.2 326.1
2H-2, 10–20 10.40 7.7 36.0 559.1 479.2 1.7 2905.7 73.6 65.5 340.0 56.6 11.5 12.0 465.8 266.9 27.0 16.7 272.5
2H-2, 110–220 11.40 7.68 36.0 554.1 475.2 1.5 2850.1 76.7 66.1 355.2 56.2 11.4 11.6 391.1 414.8 22.9 18.9 326.2
2H-3, 60–70 12.40 7.65 36.0 550.2 475.2 0.0 3663.2 83.1 69.7 414.4 56.4 11.5 12.0 403.0 423.2 21.4 19.8 326.7
2H-4, 10–20 13.40 7.66 36.0 553.0 474.9 0.0 3825.2 83.4 67.3 294.4 56.4 11.5 12.2 450.0 307.4 26.8 25.9 300.9
2H-4, 100–110 14.30 7.01 36.0 552.2 475.1 0.0 3485.8 85.0 69.7 286.0 56.5 11.5 12.2 454.2 244.7 25.7 10.8 260.5
2H-5, 60–70 15.40 7.61 36.0 554.5 475.7 0.0 4161.5 86.9 76.6 406.8 56.0 11.6 12.3 432.7 273.4 27.3 23.3 278.0
2H-6, 10–20 16.40 7.67 36.0 550.9 474.1 0.0 4130.7 86.4 74.4 360.5 55.9 11.3 12.2 404.5 424.3 22.5 19.7 326.6
2H-6, 101.5–111.5 17.32 7.68 36.0 548.8 473.2 0.0 3559.8 87.6 77.6 335.4 56.4 11.5 12.3 408.1 402.9 23.4 18.6 334.2
2H-7, 56–66 18.22 7.59 36.0 550.5 472.6 0.0 4527.2 88.1 79.6 308.1 55.8 11.5 12.2 388.6 394.2 23.2 19.3 315.1
3H-1, 112–122 19.42 7.53 36.0 550.7 473.4 1.1 1987.7 83.2 76.0 519.3 56.6 11.6 12.2 386.4 368.9 24.7 19.2 311.7
3H-2, 73–78 20.25 7.55 36.5 NA 469.5 1.5 3593.8 87.2 75.3 586.9 55.7 11.5 12.2 463.1 249.9 32.8 7.8 298.0

Notes: DIC = dissolved inorganic carbon. Gray shaded areas = levels in the core with elevated SO42– concentrations. NA = not analyzed.

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