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Table T32. Interstitial water data from rhizon samples, Section 320-U1331B-1H-6. (See table notes.)

Core, section,
interval (cm)
Depth (m) pH Alkalinity
(mM)
Salinity Cl
(mM)
Na+
(mM)
SO42–
(mM)
H4SiO4
(µM)
Mn2+
(µM)
Fe2+
(µM)
Ca2+
(mM)
Mg2+
(mM)
B
(µM)
Sr2+
(µM)
Ba2+
(µM)
Li+
(µM)
K+
(mM)
CSF CCSF-A
320-U1331B-
1H-6, 10 7.61 8.46 ND ND ND 556 488 28.3 459 BDL BDL 9.5 48.8 471 73.1 1.6 23.7 10.5
1H-6, 20 7.71 8.56 ND ND ND 560 483 27.8 477 BDL BDL 10.2 52.0 471 73.3 1.5 23.6 11.3
1H-6, 30 7.81 8.66 ND ND ND 556 476 27.4 470 BDL BDL 10.4 52.7 468 72.6 1.5 23.2 11.4
1H-6, 40 7.91 8.76 ND ND ND 556 477 27.3 474 BDL BDL 10.3 52.2 478 76.8 1.6 24.5 11.0
1H-6, 50 8.01 8.86 ND ND ND 558 480 27.5 492 BDL BDL 10.2 52.1 467 74.0 1.6 23.8 10.8
1H-6, 60 8.11 8.96 ND ND ND 558 483 27.5 468 BDL BDL 9.9 51.1 463 73.5 1.6 23.7 10.8
1H-6, 70 8.21 9.06 ND ND ND 553 479 27.9 438 BDL BDL 9.8 51.0 467 75.0 1.6 24.4 10.7
1H-6, 80 8.31 9.16 ND ND ND 556 481 27.7 354 BDL BDL 9.9 51.3 444 71.6 1.5 23.2 10.8
1H-6, 90 8.41 9.26 ND ND ND 556 481 27.5 451 BDL BDL 9.8 51.3 462 73.8 1.6 23.8 10.6
1H-6, 100 8.51 9.36 ND ND ND 559 482 27.9 454 BDL BDL 9.9 52.4 452 70.8 1.5 22.7 10.9
1H-6, 110 8.61 9.46 ND ND ND 559 482 27.8 476 BDL BDL 10.3 52.1 438 69.3 1.6 22.3 10.9
1H-6, 120 8.71 9.56 ND ND ND 561 491 28.2 479 BDL BDL 9.5 49.9 452 70.6 1.5 22.8 10.3
1H-6, 130 8.81 9.66 ND ND ND 560 484 27.7 433 BDL BDL 10.0 51.7 472 73.7 1.6 24.2 11.0
1H-6, 140 8.91 9.76 ND ND ND 556 481 27.9 504 BDL BDL 9.9 51.5 464 73.0 1.5 23.7 10.7

Notes: ND = not determined. BDL = below detection limit (Mn2+ = 0.1 µM, Fe2+ = 0.4 µM, B = 2 µM, Sr2+ = 1 µM, Ba2+ = 0.3 µM, Li+ = 3 µM) calculated as three times the standard deviation of multiple measures of a blank. H4SiO4 values measured by different techniques during Expeditions 320 and 321 disagree significantly, especially for low values. Therefore, caution should be used concerning the H4SiO4 data and comparison between the different expeditions.

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