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Table T20. H2 concentration in sediment samples, determined by extraction method, Hole C0011B.

Core, section,
interval (cm)
Depth
CSF (m)
Headspace
volume
(mL)
Interstitial
water
volume
(mL)
H2
concentration
in headspace
gas (ppmv)
H2
concentration in
interstitial water
(µM)
322-C0011B-
3R-1, 57–61 359.57 5.0 0.35 0.87 0.36
4R-1, 136.5–140.5 366.39 10.0 1.47 1.42 0.39
5R-4, 104–108 378.02 10.0 0.90 0.27 0.095
6R-4, 16–20 388.31 11.0 0.76 0.51 0.30
7R-2, 18.5–22.5 395.12 5.0 1.17 7.62 1.35
8R-3, 0–4 404.61 5.0 1.06 7.29 1.43
9R-3, 0–4 414.06 5.0 1.37 1.83 0.25
10R-2, 130–134 424.73 5.0 4.71 5.66 0.25
11R-5, 0–4 435.30 5.0 1.46 22.3 3.24
12R-5, 25–29 446.94 6.5 0.78 0.66 0.17
13R-2, 137–141 453.30 6.0 0.78 2.02 0.60
14R-5, 0–4 463.64 5.0 1.24 49.6 8.52
15R-2, 109–113 471.95 5.5 1.56 4.01 0.57
16R-1, 137–141 478.19 5.5 0.87 30.0 8.01
19R-2, 31–35 492.58 5.0 0.58 1.53 0.46
21R-3, 0–4 502.28 8.0 1.15 2.53 0.71
23R-1, 69.5–74.5 521.12 6.0 0.65 4.03 1.50
24R-2, 0–4 530.49 4.5 0.50 1.30 0.38
25R-1, 42–46 539.84 4.5 0.28 1.50 0.82
26R-1, 118–122 550.20 5.0 0.41 2.00 0.90
27R-1, 82–86 559.34 4.5 0.71 1.45 0.31
28R-1, 142–146 569.44 4.5 1.35 1.40 0.16
30R-1, 134–138 581.76 6.5 0.38 4.18 2.88
31R-1, 129–133 587.81 4.5 0.41 0.76 0.21
32R-4, 110.5–114.5 601.37 4.5 0.66 1.47 0.34
33R-1, 40–44 605.92 5.5 0.90 0.42 0.05
35R-3, 99–103 628.12 5.0 1.46 3.53 0.48
36R-1, 62.5–66.5 634.65 5.0 0.52 0.85 0.23
37R-1, 125–129 644.69 4.5 0.63 1.45 0.35
38R-1, 135–139 654.37 5.0 0.30 0.74 0.32
39R-3, 138–142 666.72 4.5 0.68 0.64 0.09
40R-2, 137.5–141.5 674.80 5.0 1.02 4.39 0.87
42R-1, 134–138 681.86 5.0 0.52 2.64 0.97
43R-2, 49.5–53.5 685.87 4.5 0.70 62.9 17.4
44R-2, 64–68 691.07 5.5 0.40 1.59 0.80
45R-2, 31–35 700.26 5.5 0.88 0.92 0.19
46R-1, 135.5–139.5 709.38 6.5 0.68 3.06 1.16
48R-2, 49.5–53.5 722.52 6.0 0.50 0.79 0.30
49R-5, 101–105 734.59 6.0 0.85 3.79 1.08
50R-CC, 0–4 741.05 6.4 0.77 2.49 0.82
51R-3, 75.5–79.5 750.49 5.5 0.25 2.57 2.21
52R-5, 115–119 763.32 5.5 1.17 0.66 0.09
58R-2, 120–124 858.33 4.5 1.23 41.9 6.57
59R-2, 69–73 867.46 5.5 0.69 14.1 4.72

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