Table
T6. Composition of hydrocarbon gases, Site 1126.
Core,
section
Depth
(mbsf)Sample
methodC1
(ppmv)C2
(ppmv)C1/C2
182-1126A-
1H-5
5.9
HS
13.6
182-1126B-
2H-5
12.50
HS
3.2
3H-4
20.50
HS
3.9
4H-5
31.50
HS
5.0
5H-5
41.00
HS
7.2
6H-5
50.50
HS
4.6
7H-5
60.00
HS
8.2
8H-5
69.50
HS
5.0
9H-5
79.00
HS
6.8
10H-3
85.50
HS
5.4
11H-4
97.27
VAC
31.8
1.3
24.5
11H-5
98.00
HS
8.3
14H-4
114.00
HS
12.1
15H-2
120.50
HS
6.3
17H-5
134.80
HS
8.3
18H-3
141.30
HS
7.8
19H-5
153.80
HS
7.6
22X-1
167.20
HS
7.3
24X-1
186.50
HS
11.3
1.1
10.3
25X-1
197.10
HS
8.6
1.2
7.2
27X-5
221.30
HS
12.0
2.7
4.4
28X-2
226.40
HS
9.2
2.1
4.4
29X-2
236.00
HS
8.5
2.1
4.1
32X-1
253.70
HS
2.7
182-1126D-
12R-1
252.45
HS
3.8
20R-1
328.90
HS
2.7
21R-1
338.68
HS
2.8
22R-3
350.60
HS
2.3
24R-1
367.40
HS
2.6
25R-3
379.83
HS
2.2
26R-2
387.65
HS
2.5
27R-1
396.62
HS
5.0
28R-3
408.84
HS
3.3
29R-1
415.60
HS
2.3
30R-2
426.29
HS
2.4
31R-1
436.18
HS
2.3
33R-1
453.70
HS
5.4
Note: HS = headspace, VAC = vacutainer, blank = not detected.