Table T4. Concentrations of methane, ethane, ethylene, and propane in headspace gas, Holes 1250C, 1250D, and 1250E.
Core, section,
interval (cm)
Depth
(mbsf)
C1
(ppmv)
C2
(ppmv)
C2=
(ppmv)
C3
(ppmv)
C1/C2
C1
(mM)
204-1250C-






1H-1, 120-125 1.20 12,019 13.7

880 2.3
2H-CC 5.06 7,271 9.3

782 1.9
3H-3, 0-5 17.00 16,942 10.3

1,638 3.5
4H-4, 0-5 27.60 34,893 5.9

5,944 9.3
5H-3, 0-5 35.98 13,115 2.1

6,367 2.6
6H-3, 0-5 44.77 9,654



1.5
7H-5, 0-5 56.70 10,442 1.5 0.5 5.2 7,201 1.9
8H-3, 0-5 64.50 8,964 1.1

8,076 2.1
10H-3, 0-5 75.46 15,818 3.3
3.4 4,793 2.5
11H-3, 0-5 85.41 13,918 2.4
6.7 5,728 2.1
12H-2, 0-5 92.65 12,874 2.7
6.0 4,716 1.9
13H-3, 0-5 103.39 17,293 25.4

681 2.7
14H-3, 0-5 114.00 13,276 36.1
5.9 368 1.8
15H-2, 0-5 121.86 12,111 27.6

439 2.0
17H-3, 0-5 135.00 12,894 30.0

430 2.4
19X-3, 0-5 141.50 11,271 18.7

603 1.9
204-1250D-






1H-2, 0-5 1.19 4,710 8.4

559 1.4
2H-4, 0-5 10.26 10,539 8.1

1,295 2.0
3H-4, 0-5 20.50 13,511 5.2

2,588 2.9
4H-3, 0-5 28.50 5,001 1.3

4,001 1.2
6H-2, 0-5 38.50 16,917 1.5

11,587 2.4
8H-4, 0-5 58.71 19,284 1.4

13,974 3.0
10H-4, 0-5 78.32 16,422 1.7

9,492 2.8
14H-5, 0-5 111.33 2,668 21.3 4.1
125 0.4
15X-3, 0-5 118.00 10,232 38.6 8.0
265 1.4
16X-3, 0-5 127.60 7,209 15.7

459 1.6
19X-3, 0-5 140.20 8,330 11.9

698 1.8
204-1250E-






2H-3, 0-5 9.50 12,038 11.97

1,006 2.0

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