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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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