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Table T27. Interstitial water data from rhizon samples, Sections 320-U1332C-4H-1 through 7H-6. (See table notes.)

Core, section,
interval (cm) 		Depth (m) pH Alkalinity
(mM)		 Salinity Cl–
(mM)		 Na+
(mM) 		SO42–
(mM) 		HPO42–
(µM) 		H4SiO4
(µM) 		Mn2+
(µM)		 Fe2+
(µM) 		Ca2+
(mM) 		Mg2+
(mM) 		B
(µM) 		Sr2+
(µM) 		Ba2+
(µM)		 Li+
(µM) 		K+
(mM)
CSF CCSF-A
320-U1332C-
4H-1, 55 27.05 29.50 ND ND ND ND ND ND ND ND 0.31 BDL 10.4 50.7 465 83.6 0.83 24.3 11.1
4H-1, 130 27.80 30.25 7.48 2.86 ND ND ND ND ND ND BDL BDL 10.5 51.0 472 82.3 0.78 24.1 11.3
4H-2, 55 28.55 31.00 7.54 2.97 ND ND ND ND ND ND BDL BDL 10.5 49.9 474 87.3 0.87 25.4 11.4
4H-2, 130 29.30 31.75 7.64 3.10 ND ND ND ND ND ND 0.24 BDL 10.6 49.8 464 86.9 0.82 25.0 11.2
4H-3, 55 30.05 32.50 7.54 2.95 ND ND ND ND ND ND BDL BDL 10.6 51.2 473 86.1 0.80 24.7 11.3
4H-3, 130 30.80 33.25 7.49 2.82 ND ND ND ND ND ND BDL 0.52 10.3 50.2 477 83.2 0.77 24.3 11.0
4H-4, 55 31.55 34.00 7.50 2.82 ND ND ND ND ND ND 1.34 0.68 10.5 50.1 434 72.9 0.83 21.5 11.1
4H-4, 130 32.30 34.75 7.34 2.78 ND ND ND ND ND ND BDL 0.69 10.4 50.9 476 82.1 1.02 23.6 11.2
4H-5, 55 33.05 35.50 7.47 2.75 ND ND ND ND ND ND BDL BDL 10.4 51.1 472 82.5 1.03 23.8 11.2
4H-5, 130 33.80 36.25 7.41 2.77 ND ND ND ND ND ND BDL BDL 10.3 50.8 472 80.0 1.00 23.3 11.2
4H-6, 55 34.55 37.00 7.46 2.42 ND ND ND ND ND ND BDL BDL 10.1 50.5 486 84.8 0.78 24.7 11.4
4H-6, 130 35.30 37.75 7.85 2.84 ND ND ND ND ND ND 0.22 BDL 10.0 50.4 493 85.7 0.82 25.0 11.0
5H-1, 55 36.55 40.80 7.43 2.83 ND ND ND ND ND ND 0.24 BDL 10.3 50.6 465 81.4 0.78 24.0 11.2
5H-1, 130 37.30 41.55 7.46 2.79 ND ND ND ND ND ND BDL BDL 10.2 51.1 457 81.9 0.79 24.0 11.0
5H-2, 55 38.05 42.30 7.47 2.74 ND ND ND ND ND ND BDL 0.58 10.1 50.8 474 82.4 0.77 24.1 11.1
5H-2, 130 38.80 43.05 7.42 2.71 ND ND ND ND ND ND BDL BDL 10.1 50.8 473 82.4 0.77 24.5 11.1
5H-3, 55 39.55 43.80 7.43 2.80 ND ND ND ND ND ND 0.26 BDL 10.0 50.3 464 82.7 0.82 24.2 10.7
5H-3, 130 40.30 44.55 7.46 2.70 ND ND ND ND ND ND 0.22 0.54 10.1 50.0 480 81.4 0.80 23.6 11.2
5H-4, 55 41.05 45.30 7.50 2.71 ND ND ND ND ND ND 0.40 1.99 10.2 50.5 510 87.2 0.85 25.1 11.4
5H-4, 130 41.80 46.05 7.44 2.80 ND ND ND ND ND ND 0.32 BDL 10.1 51.2 455 80.2 0.79 23.6 11.1
5H-5, 55 42.55 46.80 7.42 2.84 ND ND ND ND ND ND 0.27 BDL 9.9 50.6 471 82.5 0.84 24.7 11.0
5H-5, 130 43.30 47.55 7.46 2.84 ND ND ND ND ND ND 0.27 BDL 9.9 51.0 459 82.5 0.83 24.8 10.7
5H-6, 55 44.05 48.30 7.41 2.82 ND ND ND ND ND ND 0.37 BDL 9.9 50.9 447 79.7 0.79 24.0 10.7
5H-6, 130 44.80 49.05 7.44 2.79 ND ND ND ND ND ND 0.23 BDL 9.9 49.9 465 81.4 0.79 23.6 10.9
6H-2, 130 48.30 51.75 7.47 2.77 ND ND ND ND ND ND BDL BDL 10.2 49.8 468 81.1 0.76 22.9 10.8
6H-3, 55 49.05 52.50 7.45 ND ND ND ND ND ND ND 0.22 BDL 10.2 51.5 454 81.6 0.81 23.5 11.0
6H-3, 130 49.80 53.25 7.45 2.77 ND ND ND ND ND ND 0.24 BDL 10.0 50.2 453 82.5 0.80 23.6 10.7
7H-1, 55 50.05 57.00 7.43 2.78 ND ND ND ND ND ND 0.22 BDL 10.1 50.7 453 80.9 0.80 22.9 10.9
6H-4, 55 50.55 54.00 7.45 2.83 ND ND ND ND ND ND 0.27 BDL 9.8 49.4 446 80.8 0.81 23.0 10.8
7H-1, 130 50.80 57.75 7.47 2.88 ND ND ND ND ND ND BDL BDL 10.1 50.8 434 78.3 0.78 22.5 10.7
6H-4, 130 51.30 54.75 7.47 2.96 ND ND ND ND ND ND 0.22 BDL 10.0 50.1 443 76.6 0.77 22.7 10.9
7H-2, 55 51.55 58.50 7.45 2.79 ND ND ND ND ND ND BDL BDL 10.2 50.2 508 86.2 0.87 24.1 10.8
6H-5, 55 52.05 55.50 7.46 2.87 ND ND ND ND ND ND BDL BDL 9.9 50.1 456 81.5 0.80 23.5 10.7
7H-2, 130 52.30 59.25 7.48 2.78 ND ND ND ND ND ND 0.24 BDL 9.9 48.7 457 80.4 0.80 22.7 10.5
6H-5, 115 52.65 56.10 7.51 2.78 ND ND ND ND ND ND BDL BDL 10.0 50.6 456 81.7 0.82 23.5 10.8
7H-3, 55 53.05 60.00 7.44 2.56 ND ND ND ND ND ND BDL BDL 10.1 50.9 480 81.8 0.82 23.2 10.8
7H-3, 130 53.80 60.75 7.55 2.83 ND ND ND ND ND ND 0.26 BDL 10.2 51.0 450 81.8 0.81 22.9 10.7
7H-4, 55 54.55 61.50 ND ND ND ND ND ND ND ND 0.26 BDL 10.2 51.2 443 81.5 0.80 22.6 10.5
7H-4, 130 55.30 62.25 7.38 2.85 ND ND ND ND ND ND BDL BDL 10.3 51.2 443 81.2 0.83 23.0 10.6
7H-5, 55 56.05 63.00 7.38 3.02 ND ND ND ND ND ND BDL BDL 10.2 50.6 444 83.0 0.84 23.2 10.7
7H-5, 130 56.80 63.75 7.36 2.89 ND ND ND ND ND ND 0.4 BDL 10.2 50.3 431 79.2 0.82 21.9 10.6
7H-6, 55 57.55 64.50 7.31 2.99 ND ND ND ND ND ND 0.29 BDL 10.3 51.1 433 80.8 0.78 22.1 10.7
7H-6, 130 58.30 65.25 ND ND ND ND ND ND ND ND 0.24 BDL 10.2 50.8 440 80.4 0.81 22.2 10.7

Notes: ND = not determined. BDL = below detection limit (Mn2+ = 0.2 µM, Fe2+ = 0.5 µM, B = 4 µM, Sr2+ = 0.6 µM, Ba2+ = 0.1 µM, Li+ = 1 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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