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Table T11. Interstitial fluid chemistry, Site U1370.

Core, section, interval (cm) Catwalk sampling Depth (m) pH TITRAUTO Alkalinity (mM) TITRAUTO DIC (mM) OI-IC Cl (mM) M-IC SO4 (mM) M-IC SO4 (%) Calc. anom. PO4 (µM) Spec. Si (µM) Spec. Ca (mM) Dx-IC Mg (mM) Dx-IC Na (mM) Dx-IC K (mM) Dx-IC Ca (mM) ICPAES Mg (mM) ICPAES Na (mM) ICPAES K
(mM) ICPAES 		B
(µM) ICPAES 		Fe
(µM) ICPAES 		Mn (µM) ICPAES Sr
(µM) ICPAES
329-U1370E-
1H-1, 5–15 Yes 0.10 7.65 2.49 2.43 553.58 28.23 –1.26 1.94 205 10.56 52.71 483.10 12.17 10.1 52.1 483 12.1 467 9.4 4.0 89.7
1H-1, 42.5–52.5 No 0.48 7.77 2.44 2.47 553.06 28.17 –1.39 2.25 263 10.43 51.86 475.74 12.03 10.2 52.7 482 12.3 448 7.6 3.3 90.1
1H-1, 90–100 No 0.95 7.73 2.43 2.44 553.75 28.11 –1.71 2.51 288 10.49 52.31 478.69 12.16 10.4 53.3 484 12.2 474 9.6 3.7 92.5
1H-1, 140–150 Yes 1.45 7.67 2.44 2.47 554.03 28.08 –1.87 2.43 214 10.43 52.52 480.22 12.10 9.9 51.0 458 11.2 380 6.8 4.4 85.3
1H-2, 40–50 No 1.95 7.76 2.43 2.46 — — — 2.70 249 10.42 — 476.54 — 10.3 52.7 472 11.6 449 7.3 3.7 91.8
1H-2, 90–100 No 2.45 7.66 2.46 2.48 553.31 28.07 –1.78 2.57 267 — — — — 10.2 51.9 471 11.9 437 8.5 4.7 88.8
1H-2, 140–150 Yes 2.95 7.67 2.45 2.46 554.89 28.11 –1.91 2.75 218 10.57 52.45 482.36 12.21 10.3 51.9 474 11.8 486 9.0 4.3 92.6
1H-3, 40–50 No 3.45 7.76 2.43 2.43 554.75 28.13 –1.82 2.88 253 10.50 52.09 478.15 12.01 10.1 51.5 468 11.6 481 8.9 4.1 92.8
1H-3, 90–100 No 3.95 7.72 2.44 2.44 556.32 28.18 –1.94 2.77 270 10.51 52.59 480.97 11.97 10.2 51.7 470 11.9 496 10.0 3.9 93.1
1H-3, 140–150 Yes 4.45 7.70 2.45 2.50 554.38 28.13 –1.76 2.83 275 10.88 53.12 486.79 12.15 10.2 51.4 466 11.3 466 8.2 4.8 92.0
1H-4, 142–152 Yes 5.97 7.68 2.43 2.42 555.63 28.30 –1.41 2.54 186 — — — — 10.5 52.4 471 11.7 485 10.1 5.1 92.8
2H-1, 140–150 Yes 7.65 7.68 2.45 2.45 558.35 28.39 –1.56 2.23 234 — — — — 10.6 52.5 476 11.6 457 7.2 5.3 91.7
2H-2, 140–150 Yes 9.15 7.67 2.42 2.49 558.21 28.40 –1.51 2.21 240 10.85 52.61 482.56 11.77 10.3 52.9 492 11.5 483 9.3 5.4 90.6
2H-3, 140–150 Yes 10.65 7.70 2.44 2.51 559.55 28.42 –1.68 1.91 243 10.93 52.27 483.03 11.81 10.6 53.3 488 11.4 507 10.2 7.8 92.7
2H-4, 140–150 Yes 12.15 7.67 2.47 2.51 — — — 1.77 241 10.76 52.11 484.52 12.17 10.5 53.1 489 12.3 503 9.2 5.2 91.4
2H-5, 140–150 Yes 13.65 7.69 2.47 2.53 561.14 28.32 –2.29 1.67 244 10.80 52.36 485.93 12.01 10.5 52.7 481 11.5 475 7.3 4.9 91.8
2H-6, 113–123 Yes 14.88 7.71 2.49 2.57 561.58 28.29 –2.49 1.55 269 — — — — 10.6 52.7 480 11.8 488 7.8 6.4 93.0
3H-1, 140–150 Yes 17.15 7.70 2.45 2.52 560.56 28.23 –2.51 1.19 229 11.19 53.61 — — 10.6 52.2 474 11.4 491 9.2 5.3 91.5
3H-2, 140–150 Yes 18.65 7.71 2.45 2.50 563.48 28.36 –2.58 1.20 229 — — — — 10.8 52.6 479 11.8 492 8.4 4.7 93.1
3H-3, 140–150 Yes 20.15 7.72 2.45 2.54 — — –2.85 1.23 240 11.23 53.93 494.33 12.01 10.5 52.0 471 11.2 497 9.1 4.0 93.3
3H-4, 140–150 Yes 21.65 7.72 2.41 2.49 565.37 28.41 –2.73 1.19 225 10.99 52.95 485.60 11.68 10.9 52.8 480 11.5 502 10.5 5.8 93.1
3H-5, 140–150 Yes 23.15 7.70 2.42 2.51 563.29 28.27 –2.84 0.97 216 11.20 53.08 487.41 11.61 10.5 51.8 473 11.4 485 8.3 4.0 93.0
3H-6, 58–68 Yes 23.83 7.74 2.41 2.49 564.52 28.28 –3.03 1.12 220 11.13 53.10 488.04 11.65 10.7 52.9 475 11.5 506 10.0 5.4 92.0
4H-1, 140–150 Yes 26.65 7.74 2.39 2.46 564.77 28.20 –3.32 0.91 199 11.14 52.93 486.55 11.42 10.8 52.8 482 11.0 460 7.9 5.1 90.5
4H-2, 140–150 Yes 28.15 7.81 2.45 2.42 563.99 28.11 –3.50 0.97 214 11.18 53.63 488.14 11.21 10.8 53.1 495 11.0 507 9.4 5.7 91.0
4H-3, 140–150 Yes 29.65 7.73 2.36 2.42 564.76 28.11 –3.65 0.95 196 11.38 53.08 487.19 11.17 11.0 54.2 498 11.1 499 8.7 5.9 92.6
4H-4, 140–150 Yes 31.15 7.75 2.38 2.42 564.11 27.95 –4.07 1.05 250 11.30 53.69 494.26 11.45 11.0 53.6 489 11.5 478 7.5 5.4 90.6
4H-5, 140–150 Yes 32.65 7.72 2.35 2.41 565.98 28.12 –3.80 0.98 203 11.31 52.90 486.14 11.01 10.9 53.3 483 10.7 493 8.2 4.2 93.0
5H-1, 140–150 Yes 36.15 7.77 2.33 2.36 563.97 27.80 –4.57 0.82 192 11.35 52.55 484.67 10.83 10.9 53.1 480 10.8 503 8.1 5.3 92.5
5H-2, 134–144 Yes 37.59 7.75 2.34 2.35 563.89 27.89 –4.24 0.89 218 11.36 53.57 489.30 10.84 11.3 53.6 483 10.6 520 10.0 5.4 92.4
5H-3, 140–150 Yes 39.09 7.74 2.25 — — — — 1.02 201 11.46 — — 11.12 11.0 52.3 477 11.0 512 9.4 4.6 93.7
5H-4, 140–150 Yes 40.59 7.76 2.30 2.30 565.94 27.89 –4.58 0.88 185 11.33 53.67 489.03 10.72 11.2 53.1 480 10.7 525 9.9 5.9 93.3
5H-5, 140–150 Yes 42.09 7.77 2.30 2.30 563.16 27.82 –4.38 0.86 210 11.44 52.64 482.64 10.13 11.3 53.3 484 10.6 522 10.6 5.0 93.3
5H-6, 60–70 Yes 42.79 7.76 2.30 2.30 565.53 27.91 –4.45 0.81 192 — — — — 11.2 52.9 480 10.2 507 8.7 4.2 93.7
6H-1, 140–150 Yes 45.65 7.78 2.27 2.28 565.19 27.84 –4.65 0.66 204 — — — — 11.2 53.0 478 10.2 520 9.6 5.7 92.7
6H-2, 134–144 Yes 47.09 7.76 2.26 2.24 563.79 27.84 –4.39 0.86 208 11.68 53.60 485.68 10.27 11.3 53.1 481 10.4 514 9.6 5.2 92.8
6H-3, 140–150 Yes 48.58 7.79 2.26 2.31 563.94 27.76 –4.71 0.77 190 11.63 53.74 488.89 10.20 11.4 54.3 496 10.2 511 8.4 5.1 90.6
6H-4, 140–150 Yes 50.08 7.87 2.26 2.29 564.25 27.67 –5.05 0.88 226 11.85 53.90 491.19 10.26 11.4 53.9 492 10.1 523 10.1 6.8 93.6
6H-5, 100–110 Yes 51.18 7.86 2.26 2.20 — — — — — — — — — 11.4 53.8 484 11.0 494 9.0 5.1 92.0
9H-1, 140–150 Yes 63.55 8.07 2.15 2.09 564.04 26.41 –9.35 0.50 199 11.80 50.82 486.47 10.44 11.5 51.7 482 10.1 484 7.6 4.9 92.3
9H-2, 140–150 Yes 65.05 8.07 2.14 2.07 564.46 27.52 –5.61 0.67 228 — — — — 11.3 52.0 473 10.0 462 7.1 4.7 91.5
329-U1370F-
5H-3, 140–150 Yes 39.65 7.73 2.32 2.36 564.05 27.72 –4.94 0.76 184 11.20 53.65 491.14 11.06 10.7 51.9 475 10.9 512 8.5 4.7 93.0
5H-4, 140–150 Yes 41.15 7.76 2.36 2.34 565.01 27.75 –4.99 0.87 176 11.48     11.14 10.9 52.3 480 10.6 520 10.4 5.8 93.3
5H-5, 140–150 Yes 42.65 7.74 2.31 2.36 564.64 27.78 –4.84 0.99 173   53.22 488.17 10.81 11.2 53.1 483 10.7 516 10.3 6.1 92.2
6H-2, 140–150 Yes 47.65 7.78 2.28 2.28 564.74 27.76 –4.91 0.75 164 11.75 54.15 494.60 10.71 11.0 52.3 477 10.0 519 10.8 6.3 93.5
6H-3, 140–150 Yes 49.15 7.77 2.27 2.25 563.28 27.65 –5.06 0.73 171 11.61 53.57 485.97 10.28 11.2 52.9 479 10.3 521 9.1 5.7 93.5
6H-4, 140–150 Yes 50.65 7.81 2.25 2.26 562.31 27.57 –5.17 0.63 172 11.50 53.23 483.21 10.12 11.3 53.4 481 9.9 465 8.8 5.2 90.6
6H-5, 140–150 Yes 52.15 7.81 2.27 2.27 562.47 27.59 –5.11 — — — — — — 11.4 54.2 496 10.3 498 8.5 4.8 90.2
7H-1, 140–150 Yes 55.65 7.80 2.23 2.18 561.63 27.55 –5.11 0.85 170 11.75 53.95 485.48 9.97 11.6 54.7 492 9.9 521 9.9 5.9 93.7
7H-2, 140–150 Yes 57.15 7.82 2.23 2.15 561.70 27.53 –5.22 0.68 177 11.67 53.98 482.28 9.67 11.5 53.9 481 9.8 511 8.9 5.0 93.4
7H-3, 140–150 Yes 58.65 7.88 2.32 2.21 563.43 26.90 –7.64 0.84 174 11.48 53.18 488.33 10.58 11.1 53.0 481 10.4 496 6.9 4.9 90.6
7H-4, 140–150 Yes 60.15 7.91 2.31 2.19 563.24 26.34 –9.53 0.57 157 11.35 52.16 487.07 11.24 11.0 51.9 477 11.4 505 7.3 4.6 90.0
7H-5, 140–150 Yes 61.65 7.88 2.21 2.12 564.66 26.72 –8.48 0.51 167 11.58 53.02 492.44 11.35 11.2 52.3 480 11.2 515 10.1 4.4 91.5
7H-6, 140–150 Yes 63.15 7.89 2.17 2.11 563.14 27.32 –6.15 0.94 186 11.82 53.22 490.55 10.73 11.2 52.2 479 10.5 480 8.0 4.6 91.8

ISE = ion-selective electrode, TITRAUTO = automated titration, IC = ion chromatography, OI-IC = Ol analytical lC, M-IC = Metrohm IC, Calc. anom. = calculated anomaly, Spec. = spectrophotometry, Dx-IC = Dionex lC, ICPAES = inductively coupled plasma–atomic emission spectroscopy. — = no data.

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