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Table T21. H2 concentration in free drilling fluids inside the core liner, determined by extraction method, Hole C0011B.

Core,
section
Depth
CSF (m)
Headspace
volume
(mL)
Drilling fluid
volume
(mL)
H2
concentration
in headspace
gas (ppmv)
H2 concentration
in drilling fluid
(µM)
322-C0011B-
23R-1 521.12 5.00 12.00 104 1.86
23R-9 529.12 5.00 12.00 544 0.98
28R-1 569.44 4.50 12.50 14.7 0.23
35R-3 628.12 4.00 13.00 51.3 0.69
38R-1 654.37 5.00 12.00 35.8 0.64
39R-3 666.72 5.00 12.00 41.4 0.74
42R-1 681.86 5.50 11.50 43.8 0.09
43R-2 685.87 6.00 11.00 1.28 0.03
46R-1 709.38 5.00 12.00 5.23 0.09
52R-5 763.32 6.00 11.00 41.6 0.97
53R-1 767.29 6.50 10.50 27.7 0.73
58R-2 858.33 5.50 11.50 62.8 1.29
59R-2 867.46 5.50 11.50 43.4 0.90

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