Table T4. Concentrations of methane, ethane, ethylene, and propane in headspace gas, Hole 1247B.
Core, section,
interval (cm)
Depth
(mbsf)
C1
(ppmv)
C2
(ppmv)
C2=
(ppmv)
C3
(ppmv)
C1/C2
C1
(mM)
204-1247B-






1H-1, 0-5 0.0 10



0.002
1H-2, 0-5 1.5 4



0.001
1H-3, 0-5 2.5 5



0.001
2H-1, 0-5 3.6 14



0.002
2H-2, 0-5 5.1 9



0.001
2H-3, 0-5 6.6 25



0.003
2H-4, 0-5 8.1 101



0.02
2H-5, 0-5 9.6 749



0.10
2H-6, 0-5 11.1 12,599 1.0

13,124 1.8
2H-7, 0-5 12.6 54,113 2.4

22,547 8.1
3H-1, 0-5 13.1 30,788 2.4

12,991 4.7
3H-2, 0-5 14.6 57,772 1.8

32,096 10.3
3H-3, 0-5 16.1 47,376 1.5 0.7
31,168 8.9
3H-4, 0-5 17.6 50,259 1.5 0.8
32,849 10.0
3H-5, 0-5 19.1 52,600 1.5 0.7
34,834 10.2
5H-4, 0-5 29.1 25,736 3.5
4.4 7,353 5.7
6H-3, 0-5 37.1 19,605 1.3 0.8
15,560 4.2
8H-3, 0-5 56.1 14,661 0.9

16,111 3.5
9H-3, 0-5 65.5 10,217 2.1 1.2
4,912 1.9
10H-3, 0-5 75.1 18,695 1.7 1.4 4.2 10,933 4.4
11H-3, 0-5 84.2 9,996 1.3 0.9
7,871 2.7
12H-4, 0-5 94.6 11,776 6.8 1.3 8.3 1,722 3.0
13H-3, 0-5 103.2 7,418 2.0 1.5 6.0 3,636 1.8
14H-3, 0-5 109.7 12,242 2.3 1.3 7.3 5,346 2.8
18X-3, 0-5 130.3 9,926 41.0 1.1 15.4 242 2.4
19X-2, 0-5 136.1 10,426 74.2 1.7
140 2.8
20X-2, 0-5 145.7 10,182 104.1 1.3 62.3 98 2.8
21X-2, 0-5 155.4 20,759 411.6 1.7 385.7 50 3.3
22X-2, 0-5 165.0 54,113 615.7 3.6 735.3 88 8.6
23X-2, 0-5 174.6 21,416 556.4 3.3 99.3 38 3.2
24X-2, 0-5 184.2 13,017 398.6 1.5 630.6 33 2.2
25X-2, 0-5 193.5 12,945 355.0 2.2 567.9 36 2.6
26X-4, 0-5 206.4 12,273 248.0 1.1 26.4 49 2.6
26X-6, 0-5 209.4 14,201 269.0
272.0 53 2.7
27X-4, 0-5 215.7 9,103 176.0 1.1 178.6 52 2.5
27X-6, 0-5 218.7 16,322 223.5 1.2 205.6 73 3.7

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