Table T8. Headspace of methane gas in parts per million by volume converted to microliters per liter and millimoles, Holes 1244A, 1244B, 1244C, and 1244E.
Core, section,
interval (cm)
Depth
(mbsf)
C1
(ppmv)
Sediment
C1
(µL/L)†
C1
(mM)‡
Gross
weight (g)
Net
weight (g)
Volume
(cm3)*
204-1244A-






1H-2, 0-5 1.5 10 25.0 9.3 6.0 23 0.0
1H-5, 0-5 6.0 443 25.7 10.0 6.2 995 0.1
204-1244B-






1H-2, 0-5 1.5 22 23.9 8.2 5.3 62 0.0
1H-4, 0-5 4.5 43 24.8 9.1 5.7 108 0.0
2H-3, 0-5 9.6 15,007 26.1 10.4 6.4 32,137 2.4
2H-6, 0-5 14.1 39,787 24.7 9.0 5.5 106,014 8.0
3H-3, 0-5 19.1 8,323 24.3 8.6 5.2 23,832 1.8
3H-6, 0-5 23.6 7,248 22.9 7.2 4.3 26,371 2.0
4H-4, 0-5 28.8 70,697 24.8 9.1 5.4 189,995 14.5
4H-7, 0-5 33.3 15,459 26.0 10.3 6.1 35,080 2.7
5H-4, 0-5 38.6 8,748 25.0 9.3 5.5 23,039 1.8
5H-7, 0-5 43.1 13,115 25.3 9.6 5.7 33,172 2.6
6H-4, 0-5 46.9 19,912 25.9 10.2 6.0 46,690 3.6
6H-7, 0-5 51.4 6,569 22.2 6.5 3.8 27,816 2.2
204-1244C-






1H-2, 0-5 1.5 245 24.2 8.5 5.5 654 0.0
1H-3, 0-5 3.0 6 26.0 10.3 6.5 12 0.0
2H-2, 0-5 7.0 1,632 28.8 13.1 8.1 2,422 0.2
2H-5, 0-5 11.5 9,362 25.1 9.4 5.7 23,322 1.8
3H-2, 0-5 16.5 33,324 24.9 9.2 5.6 86,597 6.5
3H-5, 0-5 21.0 21,100 22.5 6.8 4.1 82,234 6.2
3H-7, 0-5 24.0 17,504 26.2 10.5 6.3 38,191 2.9
4H-3, 0-5 27.5 5,029 25.8 10.1 6.0 11,744 0.9
4H-6, 0-5 32.0 916 23.6 7.9 4.7 2,985 0.2
5H-3, 0-5 37.0 3,379 21.8 6.1 3.6 15,321 1.2
5H-6, 0-5 41.5 7,895 24.4 8.7 5.1 22,824 1.8
6H-3, 0-5 46.5 9,600 26.5 10.8 6.4 20,571 1.6
6H-6, 0-5 50.9 9,029 25.7 10.0 5.9 21,683 1.7
7H-3, 0-5 54.9 2,622 24.6 8.9 5.2 7,417 0.6
7H-6, 0-5 59.1 879 25.9 10.2 6.0 2,063 0.2
8H-3, 0-5 64.5 8,286 26.0 10.3 6.0 19,232 1.5
8H-6, 0-5 69.0 16,805 26.4 10.7 6.2 37,004 2.9
9H-3, 0-5 75.0 21 24.1 8.4 4.9 65 0.0
9H-6, 0-5 79.5 161 25.3 9.6 5.6 415 0.0
10H-3, 0-5 84.0 1,051 26.7 11.0 6.4 2,238 0.2
10H-6, 0-5 88.5 587 26.4 10.7 6.2 1,304 0.1
11H-3, 0-5 93.2 507 24.9 9.2 5.3 1,394 0.1
11H-6, 0-5 97.7 685 25.3 9.6 5.6 1,780 0.1
12H-3, 0-5 103.5 51,241 23.4 7.7 4.5 178,928 14.5
12H-6, 0-5 108.0 8,298 25.1 9.4 5.4 22,265 1.8
13H-3, 0-5 113.0 7,802 22.9 7.2 4.2 29,754 2.4
13H-6, 0-5 117.5 8,265 27.4 11.7 6.7 16,240 1.3
15H-3, 0-5 124.0 16,060 25.9 10.2 5.9 38,628 3.2
15H-6, 0-5 128.5 9,778 24.8 9.1 5.2 27,574 2.3
17H-2, 40-45 133.8 27,858 26.2 10.5 6.0 64,457 5.4
19X-3, 0-5 146.0 10,028 27.0 11.3 6.5 20,912 1.8
19X-6, 0-5 150.0 12,073 24.5 8.8 5.0 35,789 3.0
20X-4, 0-5 153.7 21,974 26.1 10.4 6.0 51,779 4.4
21X-4, 0-5 163.3 6,971 29.1 13.4 7.7 11,213 1.0
22X-4, 0-5 172.8 7,056 24.2 8.5 4.9 21,999 1.9
23X-4, 0-5 182.4 5,512 24.3 8.6 4.9 16,949 1.5
24X-4, 0-5 191.6 2,520 25.7 10.0 5.7 6,321 0.6
25X-4, 0-5 200.9 871 25.2 9.5 5.4 2,349 0.2
26X-4, 0-5 210.6 42,962 23.4 7.7 4.4 153,213 13.8
27X-4, 0-5 220.3 436 25.2 9.5 5.4 1,179 0.1
28X-4, 0-5 229.9 1,643 28.8 13.1 7.4 2,776 0.3
29X-4, 0-5 238.8 13,733 27.8 12.1 6.9 26,287 2.5
30X-4, 0-5 249.2 10,886 28.3 12.6 7.1 19,608 1.9
31X-4, 0-5 258.8 7,882 26.9 11.2 6.3 16,979 1.6
32X-4, 0-5 268.4 14,244 26.4 10.7 6.1 32,822 3.2
33X-4, 0-5 278.0 9,012 26.1 10.4 5.9 21,650 2.1
34X-4, 0-5 287.8 10,727 21.4 5.7 3.2 55,915 5.4
35X-4, 0-5 297.5 14,212 25.5 9.8 5.5 37,181 3.7
36X-4, 0-5 307.1 18,438 26.9 11.2 6.3 39,945 4.0
37X-2, 0-5 313.7 14,749 25.1 9.4 5.3 40,923 4.1
38X-4, 0-5 326.4 20,735 25.4 9.7 5.5 55,179 5.6
39X-2, 0-5 333.0 14,375 24.0 8.3 4.7 47,159 4.8
204-1244E-






1H-1, 0-5 0.0 8.9 25.1 9.5 6.68 0.02 0.0
1H-2, 0-5 1.5 6.5 26.2 10.6 6.80 0.01 0.0
1H-3, 0-5 3.0 23 27.8 12.2 7.69 0.04 0.0
1H-5, 0-5 6.0 314 27.0 11.4 7.06 0.64 0.0
1H-6, 0-5 7.5 3,369 26.3 10.7 6.59 7.62 0.5
2H-1, 0-5 8.7 1,481 28.6 13.0 7.98 2.51 0.2
2H-2, 0-5 10.2 18,787 26.8 11.2 6.85 40.21 2.8
2H-3, 0-5 11.7 13,656 25.9 10.3 6.27 33.14 2.3
2H-4, 0-5 13.2 56,704 27.0 11.4 6.92 119.36 8.4
2H-5, 0-5 14.7 31,984 26.4 10.8 6.54 73.12 5.2
2H-6, 0-5 16.2 26,002 26.4 10.8 6.53 59.65 4.2

Notes: * = sample weight per density, where density = [0.0403ln(depth) + 1.5424]. † = ppmv CH4 x [(21 - sample volume)/sample volume)]. ‡ = µL/L CH4/(f x 1000 x 22.4), where f = -0.00053 x depth + 0.64.