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Table T19. Geochemistry of headspace gas samples, Hole U1409A.

Core, section,
interval (cm)
Depth
(mbsf)
Methane
(ppmv)
342-U1409-A
1H-1, 0–5 0.00 1.79
2H-7, 0–5 10.00 2.21
3H-7, 0–5 19.60 2.16
4H-7, 0–5 29.10 2.12
5H-6, 0–5 37.10 2.26
6H-7, 0–5 48.10 2.34
7H-7, 0–5 57.62 2.48
8H-7, 0–5 67.10 2.98
9H-7, 0–5 76.61 3.03
10H-7, 0–5 86.01 2.84
11H-7, 0–5 95.60 3.37
12H-7, 0–5 105.10 3.91
13H-7, 0–5 114.44 4.19
14H-7, 0–5 124.10 3.82
16H-1, 0–5 126.10 3.49
17X-3, 0–5 130.00 3.38
18X-5, 0–5 137.60 4.27
20X-7, 0–5 159.72 4.61
21X-2, 0–5 161.90 3.67
22X-7, 0–5 178.61 4.64
23X-6, 0–5 187.10 4.11
24X-5, 0–5 195.20 2.89
26X-1, 0–5 199.30 6.43

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