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Table T12. Headspace methane concentration, ethane concentration, and the ratios of methane to ethane (C1/C2) ratios, Holes C0012C, C0012D, C0012E, and C0012G.

Core, section,
interval (cm)
Depth
(mbsf)
Methane (ppmv) Ethane (ppmv) C1/C2
333-C0012C-
1H-1, 136.5–140.5 1.3 0.0 0.0 100,000
2H-1, 137.5–141.5 5.8 0.0 0.0 100,000
3H-1, 136.5–140.5 15.3 0.0 0.0 100,000
4H-1, 137.5–141.5 24.8 0.0 0.0 100,000
5H-1, 135.5–139.5 34.3 0.0 0.0 100,000
6H-1, 137.5–141.5 43.8 0.0 0.0 100,000
8H-1, 137–141 61.3 0.0 0.0 100,000
9H-1, 141.5–144.5 70.9 0.0 0.0 100,000
10H-1, 138–142 80.2 0.0 0.0 100,000
11H-1, 138–142 87.8 0.0 0.0 100,000
12H-1, 138–142 95.3 0.0 0.0 100,000
13H-1, 137–141 103.1 0.0 0.0 100,000
14H-1, 76.5–80.5 109.3 0.0 0.0 100,000
15H-1, 138–142 117.1 0.0 0.0 100,000
333-C0012D-
2H-1, 137–141 119.2 0.0 0.0 100,000
3H-1, 138–142 127.8 0.0 0.0 100,000
4H-1, 137–141 135.1 0.0 0.0 100,000
5H-1, 136.5–140.5 142.2 0.0 0.0 100,000
6H-1, 137–141 147.6 0.0 0.0 100,000
7H-1, 136.5–140.5 153.3 0.0 0.0 100,000
8H-1, 136.5–140.5 158.8 0.0 0.0 100,000
9H-1, 137–141 163.6 0.0 0.0 100,000
10H-1, 137.5–141.5 167.7 0.0 0.0 100,000
11H-1, 134.5–138.5 171.3 0.0 0.0 100,000
12H-1, 87–91 174.1 2.5 0.0 100,000
13H-1, 136.5–140.5 176.9 0.0 0.0 100,000
333-C0012E-        
1X-1, 136–140 501.4 119.7 1.9 64
2X-1, 53–57 510.0 23.3 0.0 100,000
3X-1, 137–141 520.4 86.6 1.5 59
333-C0012G-        
1R-4, 0–4 517.1 15.7 0.0 100,000

Methane and ethane are set at 0.0 when below detection. C1/C2 is set at 100,000 when ethane concentration is below detection.

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