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Table T16. Headspace sample hydrocarbon concentrations, Hole U1390A.
Core,
section
|
Depth
(mbsf)
|
Concentration (ppmv)
|
|
Methane
|
Ethene
|
Ethane
|
Propene
|
Propane
|
|
339-U1390A-
|
|
1H-3
|
2.90
|
2.88
|
—
|
—
|
—
|
—
|
|
2H-7
|
12.54
|
2.67
|
—
|
—
|
—
|
0.36
|
|
3H-7
|
21.92
|
10,035.08
|
—
|
—
|
—
|
—
|
|
4H-7
|
31.16
|
30,249.31
|
0.43
|
0.52
|
—
|
—
|
|
5H-7
|
39.39
|
26,534.37
|
0.41
|
—
|
—
|
—
|
|
6H-6
|
49.23
|
63,991.88
|
1.28
|
1.94
|
1.41
|
—
|
|
7H-7
|
59.95
|
25,331.80
|
0.76
|
1.43
|
—
|
—
|
|
8H-7
|
69.19
|
9,266.37
|
—
|
1.1
|
—
|
—
|
|
10X-4
|
81.21
|
6,192.27
|
0.68
|
1.27
|
—
|
0.41
|
|
11X-5
|
89.50
|
5,144.98
|
0.74
|
1.69
|
—
|
—
|
|
12X-4
|
97.60
|
6,686.41
|
0.57
|
2.29
|
—
|
—
|
|
13X-4
|
107.20
|
8,108.68
|
—
|
2.74
|
—
|
—
|
|
14X-5
|
118.15
|
7,466.70
|
0.51
|
3.49
|
—
|
—
|
|
15X-4
|
126.40
|
14,170.22
|
1.04
|
7.59
|
—
|
—
|
|
16X-5
|
137.40
|
7,982.97
|
—
|
4.91
|
—
|
—
|
|
17X-4
|
145.40
|
9,196.75
|
—
|
4.04
|
—
|
—
|
|
18X-5
|
156.09
|
5,456.44
|
—
|
2.48
|
—
|
—
|
|
19X-3
|
162.86
|
6,748.13
|
1.58
|
4.57
|
—
|
—
|
|
20X-4
|
174.10
|
7,080.24
|
0.43
|
5.82
|
—
|
—
|
|
21X-6
|
186.30
|
7,407.62
|
0.48
|
4.7
|
—
|
—
|
|
22X-6
|
196.05
|
10,894.07
|
0.42
|
6.77
|
—
|
—
|
|
23X-6
|
206.82
|
7,504.57
|
0.82
|
8.07
|
—
|
—
|
|
24X-7
|
216.33
|
7,337.89
|
1.49
|
13.5
|
—
|
—
|
|
25X-5
|
223.50
|
9,447.93
|
1.20
|
14.74
|
—
|
0.45
|
|
26X-6
|
234.50
|
4,391.90
|
—
|
8.98
|
—
|
0.53
|
|
27X-7
|
245.21
|
3,193.33
|
0.53
|
5.13
|
—
|
—
|
|
28X-7
|
254.92
|
3,244.92
|
—
|
7.15
|
—
|
0.66
|
|
29X-7
|
263.95
|
3,661.48
|
—
|
7.34
|
0.41
|
0.34
|
|
30X-8
|
274.27
|
12,261.30
|
—
|
21.66
|
0.38
|
—
|
|
31X-7
|
283.57
|
4,799.19
|
—
|
9.63
|
—
|
—
|
|
32X-6
|
292.20
|
4,845.77
|
—
|
11.73
|
—
|
—
|
|
33X-6
|
301.51
|
8,235.29
|
—
|
16.6
|
—
|
—
|
|
34X-5
|
309.89
|
15,951.64
|
1.35
|
41.98
|
—
|
0.44
|
|
35X-4
|
317.44
|
5,984.93
|
—
|
11.52
|
—
|
—
|
|
36X-5
|
329.01
|
16,457.88
|
0.64
|
29.09
|
—
|
0.61
|
|
37X-2
|
335.00
|
7,959.99
|
0.75
|
18.86
|
—
|
—
|
|
38X-4
|
346.40
|
9,830.54
|
2.48
|
46.38
|
—
|
11.52
|
— = no data.
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