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Table T26. Concentrations of molecular hydrogen and carbon monoxide in interstitial water of sediment cores of Hole C0020A, determined by the incubation method.

Core, section,
interval (cm) 		Depth
CSF-B (m) 		t = 0 (ppmv) t = 1 (ppmv) t = 2 (ppmv)
H2 CO H2 CO H2 CO
337-C0020A-
1R-1, 123–127 1278 0.4 0.1 35.5 0.30 51.6 1.20
2R-1, 136–140 1287 0.8 1.6 14.8 14.8 22.5 1.20
2R-2, 136–139 1289 0.9 BD 12.3 0.50 1040 1.90
3R-2, 71–75 1372 2.3 0.8 46.5 0.60 292 8.10
4R-2, 99–103 1377 1.2 0.0 4.00 0.60 1790 1.90
5R-2, 39–43 1492 2.0 0.0 24.6 0.70 783 5.50
6R-1, 136.5–140.5 1496 0.8 0.1 260 8.10 447 12.9
6R-3, 137–141 1499 2.5 0.3 25.2 1.40 77.1 3.60
8R-3, 79.5–80 1606 1.0 0.1 13.1 1.60 6.60 1.80
8R-5, 19.5–20 1607 0.4 BD 8.30 1.70 21.5 1.70
8R-9, 15–17 1611 0.7 0.2 2.40 1.40 0.40 0.70
9R-1, 139–143 1627 0.3 BD 88.2 0.40 77.7 0.00
10R-1, 137–141 1631 5.1 1.9 761 0.90 473 1.00
11R-1, 134–138 1739 2.0 0.2 2250 0.10 2420 0.50
11R-4, 142–146 1742 2.6 0.0 1080 2.20 1480 2.10
12R-1, 139.5–143.5 1748 2.7 BD 460 3.80 439 4.30
12R-7, 0–4 1755 1.3 0.0 486 14.5 549 15.3
13R-1, 140–144 1758 2.6 0.3 107 0.70 98.4 0.70
13R-7, 137–141 1765 1.6 0.0 41.8 0.30 39.1 1.00
14R-1, 136–140 1821 1.5 2.0 510 1.40 219 1.20
14R-4, 23–27 1824 1.5 0.9 28.6 0.10 1.80 BD
14R-5, 91.5–95.5 1826 0.7 0.1 2560 4.70 2310 1.00
15R-1, 135.5–139.5 1920 BD 2.7 4.40 19.8 25.9 19.0
15R-6, 136–140 1925 0.4 2.0 1370 5.80 1725 3.60
16R-1, 97–101 1929 1.0 0.0 1.50 2.20 14.9 3.60
16R-2, 73–77 1930 1.1 0.8 BD 4.00 6.80 3.50
16R-3, 97–101 1931 1.1 2.0 208 6.00 1060 4.60
16R-4, 98–102 1932 1.2 0.1 13.7 1.10 6.80 3.50
17R-1, 137–141 1937 1.7 0.8 18.2 2.20 1070 2.50
17R-4, 137–141 1940 0.2 1.1 31.7 7.60 38.1 6.70
17R-6, 62–66 1942 1.6 0.1 50.6 1.40 149 1.20
17R-8, 116.5–120.5 1944 0.4 BD 8.00 2.70 14.7 1.00
18R-1, 111–115 1947 2.7 18.4 68.2 58.8 65.9 45.3
19R-1, 137–141 1951 1.9 0.1 4.90 2.80 2.80 0.50
19R-3, 137–141 1953 0.3 0.0 74.7 2.00 171 2.30
19R-4, 86–90 1954 BD 0.0 31.7 2.10 45.3 0.70
19R-7, 137–141 1958 5.5 1.0 115 46.9 69.1 33.9
20R-2, 62–66 1962 2.5 0.0 7.30 0.40 3.70 0.20
20R-6, 47–51 1966 0.4 0.1 5.10 0.10 1.60 0.00
21R-1, 138–142 1970 BD 0.0 72.6 0.80 61.5 0.40
22R-4, 0–4 1978 BD 0.0 236 3.30 1150 6.60
23R-1, 92–96 1982 0.4 0.4 54.4 13.8 61.9 6.40
23R-3, 136–140 1985 BD 0.1 35.8 16.8 105 15.3
23R-4, 96.5–100.5 1986 BD 0.7 80.8 3.20 66.4 0.40
23R-8, 0–4 1989 BD 0.1 62.9 10.2 202 7.60
24R-1, 97–101 1995 1.1 0.1 10.7 3.80 1450 3.40
25R-1, 137–141 1996 BD 0.8 264 17.6 426 1.50
25R-2, 137–141 1998 BD 2.6 10.2 68.3 82.4 39.9
25R-3, 137–141 1999 0.1 0.4 77.8 11.1 49.3 3.60
25R-5, 156.5–140.5 2001 BD 5.0 149 95.6 378 66.6
26R-2, 0–4 2111 1.0 0.3 876 1.50 237 1.50
26R-4, 136–140 2115 2.2 0.3 306 1.10 6.80 0.00
26R-7, 0–4 2117 0.1 0.1 1310 4.80 1430 15.3
27R-2, 0–4 2201 1.1 BD 76.8 1.50 175 1.10
27R-3, 140–144 2203 9.0 0.2 6.40 0.20 6.50 0.40
28R-2, 137–141 2303 1.1 0.0 824 10.0 1050 22.1
28R-5, 137–141 2306 6.4 0.2 77.9 1.90 77.5 9.10
29R-1, 136.5–140.5 2401 3.0 0.0 41.6 0.70 62.7 BD
29R-3, 134–137 2404 2.4 0.2 137 3.10 3170 12.5
29R-7, 136.5–140.5 2408 0.3 0.0 54.8 0.50 53.5 1.80
30R-3, 0–4 2449 0.7 1.6 1.90 0.20 0.60 BD
30R-4, 0–4 2450 0.7 0.0 27.8 0.80 30.8 1.10
32R-1, 141–145 2458 0.2 0.1 2200 19.8 1610 11.8
32R-6, 67–71 2463 0.7 0.0 70.7 0.00 256 11.7
32R-1, 141–145 control 2458 BD BD 1520 12.6 3060 19.8
32R-6, 67–71 control 2463 BD 0.0 259 18.0 125 13.9

BD = below detection.

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