Table T5. Concentrations of methane, ethane, ethylene, and propane in headspace gas, Holes 1248B and 1248C.
Core, section,
interval (cm)
Depth
(mbsf)
C1
(ppmv)
C2
(ppmv)
C2=
(ppmv)
C3
(ppmv)
C1/C2
204-1248B-





1H-2, 0-5 1.20 37,715 62.9

599
1H-4, 0-5 6.00 1,685 2.9

583
1H-5, 0-5 7.00 7,827 10.7

732
2H-2, 38-39 7.75 118,447 258.9
10.7 457
2H-5, 42-43 10.82 292,790 595.4
35.2 492
204-1248C-





1X-1, 0-5 0.00 29,475 45.7

645
2X-1, 0-5 9.60 11,329 12.9

878
3X-1, 145-150 20.65 16,585 24.1 0.5
688
3X-2, 108-113 21.78 13,264 23.7 0.4
560
4X-1, 0-5 28.80 158,896 252.7
37.1 629
5X-2, 105-110 40.95 10,666 13.6 0.5 41.5 785
6H-3, 0-5 49.76 13,475 7.3
22.1 1,848
6H-4, 0-5 51.15 8,285 7.1
25.3 1,175
7H-3, 0-5 60.50 12,330 6.3
26.3 1,945
7H-6, 0-5 65.00 10,709 4.4
21.7 2,456
8H-3, 0-5 69.97 12,423 4.4
20.0 2,823
9H-3, 0-5 79.50 17,380 7.6 0.4 31.9 2,296
10H-2, 0-5 87.19 13,346 6.7
24.2 1,998
11H-3, 0-5 97.66 47,621 11.6
42.4 4,112
12H-5, 0-5 110.61 22,686 52.6
40.1 431
13H-3, 0-5 117.48 17,304 100.9
89.1 171
14H-3, 0-5 125.77 16,719 335.1 0.7 201.9 50
14H-6, 0-5 130.24 7,761 179.4
82.6 43
15H-3, 0-5 135.45 15,984 450.4 0.9 335.0 35
16H-2, 0-5 138.00 18,874 566.9 0.9 437.2 33
17X-2, 0-5 143.45 7,274 251.9
255.8 29
17X-5, 0-5 147.45 10,614 346.8
302.8 31

Note: C1 = methane, C2 = ethane, C2= = ethylene, C3 = propane.