Table T5. Concentration of light hydrocarbon and nonhydrocarbon gases in VAC samples of core gas void, Holes 1250B, 1250D, 1250E, and 1250F.
Core, section,
interval (cm)
Depth
(mbsf)
C1
(ppmv)
C2
(ppmv)
C3
(ppmv)
i-C4
(ppmv)
n-C4
(ppmv)
i-C5
(ppmv)
n-C5
(ppmv)
i-C6
(ppmv)
CO2
(ppmv)
O2
(ppmv)
N2
(ppmv)
C1/C2
204-1250B-












1H-1, 100 1.00 942,209 743 23.8 7.3 10.0 5.5

387,582 6,230 22,069 1,268
2H-1, 55 5.05 805,408 772 8.4




5,251 20,744 1,043 1,043
3H-1, 96 14.96 871,052 188





31,227 16,161 66,238 4,646
3H-6, 145 22.95 950,127 128 9.0




19,968 2,356 7,262 7,434
4H-2, 70 25.70 954,172 139 12.2




16,663 1,114 8,934 6,855
4H-4, 105 28.65 932,816 91.9 12.9




13,190 8,299 35,128 10,150
5H-1, 120 34.20 946,099 101 11.7




19,265 2,562 10,208 9,414
5H-5, 0 38.98 969,790 81.8 13.5




11,005 75 1,348 11,856
6H-6, 0 49.05 983,242 98.3 5.2




5,236 22 528 10,002
7H-5, 130 58.00 955,972 37.8 33.6 5.6



18,753 52 1,856 25,290
8H-1, 120 62.70 952,778 21.1 34.3 5.1



2,231 6,438 166,773 45,155
8H-6, 29 69.29 973,349 103 11.8




5,974 1,455 1,313 9,432
10H-3, 6 75.52 977,463 127 2.0




6,009 31 560 7,709
10H-3, 69 76.15 976,144 94.2 20.0







10,367
10H-3, 69 76.15 972,148 101 25.4




9,648 78 1,045 9,592
10H-6, 33 80.29 966,719 79.5 25.6 3.5



9,258 87 1,113 12,163
11H-2, 66 84.62 959,452 41.9 33.2 4.4






22,888
11H-6, 0 89.46 892,025 49.0 44.7 6.2



15,835 13,662 60,774 18,216
12H-2, 66 93.31 923,921 72.7 67.3 10.0 4.1


46,066 1,911 1,550 12,702
12H-5, 120 98.23 961,546 118 47.5 7.4



14,440 87 829 8,125
13H-2, 0 101.89 967,955 1,211 12.9




2,857 15,561 57,521 800
13H-6, 0 107.89 965,380 397 23.4 4.5



6,546 1,965 1,552 2,434
14H-1, 55 111.55 921,755 919 58.3 14.4
5.3




1,003
14H-3, 45 114.45 963,094 117 45.0




14,505 73 795 8,232
15H-4, 42 125.28 792,658 515 39.1 11.3



10,972 37,404 145,466 1,539
17H-4, 20 136.70 957,094 444 5.0




15,616 298 11,412 2,156
19H-4, 126 144.21 939,755 477 7.3




333 296 9,802 1,969
204-1250D-












2H-1, 109 7.59 958,899 475.6 5.3




16,369 285 18,664 2,016
2H-5, 50 12.26 957,977 706.1 6.3




5,045 324 16,306 1,357
3H-1, 126 17.26 956,395 132.5 11.6 4.2



15,690 189 24,679 7,218
4H-1, 149 26.99 954,905 58.3 9.0




13,468 244 13,855 16,379
6H-2, 98 39.48 949,159 10.5 8.5 2.7



11,917 154 14,459 90,396
8H-7, 51 63.69 817,572 33.3 3.8




3,497 151 9,911 24,530
10H-7, 76 83.58 804,629 20.2 12.1 37.7



14,565 112 7,161 39,892
14H-2, 100 108.00 949,473 1,106.0 27.7 5.4



7,209 165 7,043 858
15X-3, 96 118.96 919,613 915.3 96.5 34.4



29,586 368 25,144 1,005
16X-3, 47 128.07 944,246 430.3 7.2




12,862 329 10,477 2,194














204-1250E-












1H-1, 140 1.40 837,221 921.9 4.4




13,311 7,153 13,874 908
2H-1, 10 6.60 952,495 664.2 9.8




14,249 309 11,718 1,434
2H-1, 55 7.05 879,538 480.5 7.8




22,145 6,276 63,968 1,830
204-1250F-












1H-2, 23 101.73 547,504 121.6 15.3







4,503
1H-2, 23 101.73 537,946 64.6





10,572 90,665 340,094 8,327
1H-2, 141 102.91 951,008 275 20.3







3,454
1H-2, 141 102.91 946,737 146





10,533 1,672 1,287 6,497
1H-3, 102 104.02 958,756 324 20.1







2,962
1H-3, 102 104.02 953,652 171





7,843 1,330 950 5,577
1H-4, 7 104.57 961,734 392 25.5




4,755 1,446 1,201 2,456
1H-4, 94 105.44 959,698 175 39.3




6,283 1,139 1,134 5,496
1H-5, 75 106.75 966,270 531 25.0




5,120 1,489 1,112 1,820
1H-6, 149 108.99 956,640 619 27.9
3.2 1.5 1.4
3,268 998 156 1,545
2H-1, 76 110.26 936,949 815 81.5 24.7 4.5 8.5

12,119 6,516 16,156 1,150
2H-2, 96 111.96 957,385 1,107 73.1







865
2H-3, 1 112.51 959,947 1,167 76.5 33.1 2.6 9.2

6,360 2,299 1,351 823
2H-3, 7 112.57 945,991 1,144 87.9 34.8 3.3 10.5

10,303 3,691 4,737 827
3X-2, 54 115.54 934,700 1,258 143.1 83.6 1.6 26.9

26,587 3,099 5,886 743
5H-1, 34 121.34 948,353 771 49.5







1,230
5H-1, 130 122.00 964,914 691 42.8 18.4 1.9 5.5

10,107 1,581 1,169 1,396
5H-2, 55 123.05 968,006 620 29.8 9.4 1.9 5.2

6,747 1,559 1,112 1,561
6X-1, 100 128.30 933,551 647 12.4
5.8 4.9

28,678 2,325 9,901 1,443
6X-2, 26 129.06 907,593 618 12.7
4.8 3.2

31,412 4,000 16,977 1,469
9X-1, 106 135.06 944,049 409 8.1

1.8

8,178 1,551 1,492 2,308
9X-2, 124 136.74 955,343 449 7.9

1.9




2,128
10X-3, 73 147.33 770,925 312








2,474
10X-3, 73 147.33 796,757 483 10.5

3.1

2,437 37,416 137,219 1,650
11X-2, 98 155.68 972,109 4,011 872 400 8.6 38.4

7,009 1,456 1,382 242
11X-3, 145 157.38 929,271 4,174 906 409 7.6 32.7

8,792 5,800 15,703 223
11X-5, 0 158.90 963,019 4,426 1,042 445 5.3 29.5

6,920 1,183 970 218
12X-1, 111 163.91 928,188 5,330 1,623 496 339 1.3

13,185 2,684 12,061 174
12X-2, 133 165.63 941,979 5,473 1,808 481 402 185 1.4
11,258 2,073 9,557 172
12X-4, 119 168.49 930,330 5,596 1,921 652 675 242 2.3
15,864 1,522 5,076 166
12X-5, 45 169.25 931,335 5,203 1,844 667 676 240 3.2
3,430 2,733 10,307 179
13X-2, 72 174.62 924,075 7,465 7,077 798 1,101 304 28.0 7.7 15,160 4,538 14,055 124
13X-5, 30 178.70 302,182 2,408 1,094 378 428 182 8.4 1.8 4,140 149,412 535,498 126

Notes: C1 = methane, C2 = ethane, C3 = propane, i-C4 = isobutane, n-C4 = normal butane, i-C5 = isopentane, n-C5 = normal pentane, i-C6 = isohexane, CO2 = carbon dioxide, O2 = oxygen, N2 = nitrogen. Blank cells = below detection limit.