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Table T9. Concentrations of hydrocarbons observed in safety gas vials, Site C0014.

Core, section,
interval (cm) 		Depth
(mbsf) 		CH4 in
headspace
(ppm) 		C2H6 in
headspace
(ppm) 		C3H8 in
headspace
(ppm) 		Butane, ethylene,
and/or propylene
(Y or N) 		Sediment
mass
(g) 		CH4 in
pore water
(µM) 		C2H6 in
pore water
(µM)
331-C0014A-
1H-CC, 24.5–25.5 5.14 6.5 BD BD N 5.4 1.8 BD
331-C0014B-
1H-1, 138–142 1.38 29.3 0.2 BD N 7.4 4.8 0.0
2H-1, 133–137 7.83 83.5 0.6 BD N 6.4 18.5 0.1
2H-7, 93–97 13.32 4099.7 0.9 BD N 6.1 736.3 0.2
3H-1, 80–84 16.80 952.5 0.2 BD N 5.7 178.1 0.0
4H-2, 136.5–140.5 27.43 3314.0 0.6 BD N 6.3 614.0 0.1
5H-12, 0–4 40.59 2354.5 1.0 BD N 3.5 795.6 0.3
331-C0014C-
1H-4, 138.5–142.5 2.34 41.6 BD BD N 4.7 12.8 BD
331-C0014D-
1H-1, 136–140 1.36 2093.7 1.0 BD N 5.1 559.7 0.3
2H-1, 134–138 7.84 2635.4 0.4 BD N 4.4 650.4 0.1
331-C0014E-
1H-2, 136.5–140.5 17.53 433.6 BD BD N 6.2 89.5 BD
1H-CC, 21–25 25.11 765.7 0.3 BD N 8.9 100.7 0.0
2H-3, 27.5–31.5 27.11 509.2 0.2 BD N 5.9 105.3 0.1
331-C0014F-
1H-1, 16–20 0.16 2.9 BD BD N 4.6 0.8 BD
331-C0014G-
1H-1, 138–142 1.38 31.3 BD BD N 6.8 6.1 BD
2H-1, 134–138 10.54 17.7 BD BD N 3.1 8.1 BD
3H-2, 137–141 20.71 3485.3 7.1 BD N 6.4 673.6 1.4
4H-10, 96.5–100.5 36.42 4.1 BD BD N 4.7 1.2 BD
5H-4, 31.5–35.5 38.91 1143.3 0.2 BD N 2.3 698.5 0.1
6H-7, 108–112 52.90 1220.2 0.4 BD N 4.0 611.3 0.2
7X-CC, 27–31 50.47 ND ND ND N ND ND ND
9X-2, 0–4 55.61 1288.1 0.2 BD N 2.7 1361.2 0.2
10H-1, 0–4 58.70 5.0 BD BD N 5.5 1.8 BD
11X-1, 7.5–11.5 59.78 56.6 BD BD N 1.4 176.5 BD
12H-3, 0–4 65.15 317.6 BD BD N 3.4 260.3 BD
13T-3, 0–4 68.71 790.1 BD BD N 3.3 486.5 BD
14T-3, 0–4 72.69 2240.9 0.8 BD N 6.1 868.0 0.3
15T-1, 16.5–20.5 75.87 1944.6 0.7 BD N 5.5 1028.0 0.4
16T-2, 0–4 76.69 4451.3 0.6 BD N 4.9 2092.0 0.3
17T-4, 96–100 83.59 2335.8 0.9 BD N 4.0 1131.5 0.5
18T-2, 96–100 85.98 7425.4 1.0 BD N 6.3 1732.9 0.2
19T-CC, 16–20 89.52 390.9 BD BD N 4.3 351.2 BD
20T-1, 59–63 94.29 1481.9 0.2 BD N 5.5 773.9 0.1
21H-2, 77–81 99.07 114.3 BD BD N 2.3 120.0 BD
22X-1, 34.5–35.5 100.55 186.0 BD BD N 3.5 171.6 BD
23X-2, 19–23 105.50 194.0 BD BD N 4.8 78.4 BD
24T-4, 0–4 111.69 2000.8 0.8 BD Y 6.7 600.9 0.2
25T-1, 59–63 114.29 541.6 BD BD N 6.2 259.9 BD
30X-1, 0 127.20 280.6 BD BD N 2.4 1866.2 BD

BD = below detection, ND = no data.

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