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Table T19. Interstitial water constituents, Hole U1405A.

Core, section,
interval (cm) 		Depth
(mbsf) 		pH Alkalinity
(mM) 		Ammonium
(μm) 		Salinity Cl–
(mM)* 		Cl–
(mM)† 		Na+
(mM) 		SO42–
(mM) 		HPO4–
(μm) 		Mn2+
(μm) 		Fe2+
(μm) 		Ca2+
(mM) 		Mg2+
(mM) 		Sr2+
(μm) 		K+
(mM) 		Sr/Ca Mg/Ca
342-U1405A-
1H-3, 145–150 4.45 7.5 2.7 4 37 556.65 533.73 497.85 29.56 BDL 0.10 2.21 10.97 53.26 83.21 12.89 7.6 4.9
2H-6, 145–150 15.15 7.4 3.3 1 37 556.92 514.29 497.38 26.15 BDL BDL 1.79 11.87 54.25 86.13 12.73 7.3 4.6
3H-6, 145–150 24.70 7.6 4.5 5 37 563.20 536.31 500.84 25.45 BDL 7.49 2.18 13.50 52.46 91.19 16.07 6.8 3.9
4H-6, 145–150 34.15 7.5 4.9 20 37 571.46 529.21 504.97 27.12 BDL ND ND 14.47 51.76 ND 12.45 ND 3.6
5H-6, 145–150 43.65 7.4 5.0 36 37 559.11 540.54 504.49 28.35 BDL 29.57 1.82 15.07 51.30 96.08 12.69 6.4 3.4
6H-6, 145–150 53.15 7.3 4.9 53 37 566.44 530.59 504.95 26.37 BDL 35.84 2.55 15.73 50.40 99.15 12.90 6.3 3.2
7H-6, 95–100 62.15 7.3 5.6 81 37 564.79 525.85 507.93 26.85 BDL 48.93 2.68 16.71 50.18 104.88 12.66 6.3 3.0
8H-6, 145–150 72.15 7.4 6.2 98 37 559.59 524.95 503.99 25.92 BDL 57.73 0.41 17.45 49.16 107.95 12.66 6.2 2.8
9H-6, 145–150 81.65 7.3 6.4 112 37 565.29 538.45 505.33 24.31 BDL 68.94 11.78 18.23 49.10 114.40 12.16 6.3 2.7
10H-6, 145–150 91.15 7.3 6.8 130 37 554.87 530.31 504.90 25.25 BDL 72.04 5.95 18.93 48.76 118.88 11.92 6.3 2.6
11H-6, 145–150 100.65 7.1 6.0 154 37 554.30 535.92 504.53 24.35 BDL 80.64 9.88 19.08 47.72 122.89 12.21 6.4 2.5
12H-6, 121–126 109.91 7.4 6.7 171 37 557.25 530.13 510.11 23.35 BDL 76.81 0.61 19.84 46.98 126.12 12.16 6.4 2.4
13H-6, 145–150 119.65 7.3 6.7 184 37 533.42 520.30 499.68 23.58 BDL 83.98 4.81 20.26 45.75 131.48 11.93 6.5 2.3
14H-6, 145–150 129.18 7.2 7.1 192 37 554.85 532.73 506.05 24.06 BDL 97.24 26.92 21.23 45.63 136.04 11.77 6.4 2.1
15H-6, 146–151 138.66 7.1 6.6 223 37 ND 541.23 509.24 24.60 BDL 88.46 25.13 21.57 45.15 137.34 14.33 6.4 2.1
16H-6, 146–151 148.23 7.1 7.1 233 37 ND 547.43 507.99 24.20 BDL 100.40 17.67 22.39 44.62 144.36 11.90 6.4 2.0
17H-6, 140–150 157.60 7.1 7.6 259 37 ND 515.53 507.56 24.11 BDL 105.93 15.36 23.00 43.69 147.44 10.95 6.4 1.9
18H-6, 111–121 166.86 7.3 8.1 271 38 ND 527.65 506.78 22.54 BDL 112.08 9.23 23.87 43.33 153.93 12.92 6.4 1.8
19H-6, 110–120 176.30 7.1 7.7 296 37 ND 525.06 504.30 22.13 BDL 109.79 8.14 24.05 42.27 155.01 12.92 6.4 1.8
20H-6, 112–122 185.82 7.0 8.2 305 38 ND 543.01 509.17 22.86 BDL 110.59 10.04 24.87 42.16 157.81 12.89 6.3 1.7
21H-4, 137–147 192.17 6.9 7.2 315 38 ND 565.84 490.56 24.68 BDL 107.33 13.89 24.39 40.25 157.72 10.25 6.5 1.6
22H-6, 132–142 205.02 7.1 8.8 308 38 ND 563.69 480.19 23.94 BDL 114.72 3.70 25.27 39.41 163.73 9.88 6.5 1.6
23H-5, 132–142 213.02 7.0 8.6 341 38 ND 575.78 487.84 24.84 BDL 119.01 37.19 25.83 39.50 167.89 9.95 6.5 1.5
24H-6, 136–146 223.27 7.5 8.4 332 37 ND 587.11 486.66 22.94 BDL 115.00 23.57 25.99 39.72 170.79 9.49 6.6 1.5
25H-6, 102–112 233.22 6.9 7.8 307 38 ND 575.55 486.81 21.37 BDL 111.19 27.57 26.67 40.22 175.00 8.74 6.6 1.5
27X-3, 140–150 246.30 7.0 7.7 349 38 ND 562.44 488.26 23.48 BDL 93.48 24.92 26.92 39.51 184.23 9.12 6.8 1.5
29X-2, 140–150 264.00 ND ND 343 37 ND 564.35 481.26 22.26 BDL 104.93 98.70 27.10 38.99 196.75 8.83 7.3 1.4
33X-3, 140–150 303.60 7.0 5.3 322 37 ND 559.42 460.64 19.74 BDL 64.50 2.83 28.54 40.28 215.76 6.26 7.6 1.4

* = manual titration. † = ion chromatograph. BDL = below detection limit (HPO4– = 0.2 µM and Mn2+ = 0.1 µM) calculated as three times the standard deviation of multiple measures of a blank. ND = not determined.

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