Table T10. Composition of gas samples from PCS experiments, Hole 1244C.
Sample
Volume
(mL)
C1
(ppm)
C2
(ppm)
C3
(ppm)
i-C4
(ppm)
n-C4
(ppm)
i-C5
(ppm)
n-C5
(ppm)
i-C6
(ppm)
n-C6
(ppm)
O2
(ppm)
N2
(ppm)
CO2
(ppm)
204-1244C-14P (119.5 mbsf)










G1 170 436,079
1.6 0.8 0.4 0.3 6.1 0.6
85,989 439,689 669
G2 550 689,226
2.8 1.3 0.4 0.3


47,949 247,888 2,149
G3 580 667,865
3.3 2.2 1.4 0.7 18.2 1.9
55,396 257,047 4,666
G4 250 670,843
3.6 2.6 1.7 0.8 20.0 2.0 0.2 54,751 254,490 4,696
G5 125 705,012
3.6 2.3 1.4 0.8 21.7 2.1 0.2 49,213 227,366 4,506
G6 120 638,788
3.2 1.9 0.6 0.6 7.2 0.8
64,289 277,859 1,781
204-1244C-16P (130.5 mbsf)










G1 15 5,634
0.8 3.7 2.3 0.4 19.2 2.1
183,744 765,307 87
G2 475 843,372
3.0 1.1 0.4 0.3 4.8 0.5
24,411 99,419 3,615
G3 435 560,012
2.2 3.0 0.3 0.2 1.3

75,549 341,868 1,921
G4 245 636,039
3.1 4.2 0.9 0.4 7.5 0.8
61,899 282,637 3,410
G5 170 679,387
3.4 1.5 0.6 0.4 0.9

55,204 247,197 3,881
G6 145 580,360 84.1 176 1.6 0.5 0.4 3.9 0.4
37,069 164,478 2,325
G7 130 640,898
4.3 1.6 0.5 2.9 1.1

50,109 221,322 2,295
G8 70 635,219
4.3 1.9 0.7 0.7 2.4 0.3
53,633 232,047 2,887
204-1244C-18P (141.5 mbsf)










G1 125 772,473 80.6 2.3 1.0 0.7 0.1 5.7

35,347 167,384 495
G2 610 920,021 96.0 2.3 0.8 0.3 0.3 2.2

1,519 27,305 498
G3 345 882,178 92.1 3.1 1.5 1.2 0.5 13.8 1.5
8,695 78,080 556
G4 285 851,463 82.5 2.9 1.2 0.5 0.4 7.2 0.8
15,250 104,741 524
G5 250 881,000 85.4 3.3 1.4 0.4 0.3 5.9 0.7
9,606 66,977 1,030
G6 145 884,948 85.8 3.3 1.3 0.3 0.5 1.4 0.2
8,621 63,660 1,213
G7 145 843,935 87.2 3.4 1.6 0.4 0.5 3.1 0.5
15,308 105,297 576
G8 85 852,936 88.1 3.4 1.4 0.3 0.5 2.7 0.5
13,695 95,317 340
G9 70 701,437 79.9 3.7 1.4 0.4 0.6 2.1 0.2
36,677 246,037 563
G10 30 692,092 85.3 4.5 1.5 0.5 0.7 2.8 0.4
36,665 256,700 508
G11 20 663,382 84.5 4.5 1.8 0.8 0.7 5.7 0.6
43,299 276,725 480
204-1244E-6P (39.2 mbsf)










G1 350 870,286 5.7






15,114 78,400 1,209
G2 140 937,758 10.0 4.9





7,561 38,339 629
G3 175 930,691 11.8 3.4





4,961 34,666 577
G4 90 953,158 9.2 5.6





1,224 21,812 695
G5 190 941,925 7.6 5.7





2,711 28,599 1,059
204-1244E-11P (71.6 mbsf)










G1 210 810,427 14.0






28,500 140,287 303
G2 460 970,372 32.0






1,236 3,175
G3 470 972,979 17.0






312 1,227
G4 410 971,345 14.5






192 1,354
G5 370 971,345 14.5






230 2,110
G6 450 965,414 10.0 2.6






1,592 323
G7 410 966,128 9.2 3.3





117 3,471 656
G8 370 959,598 8.6 3.6






5,637 1,201
G9 390 957,788 9.4 3.7






8,191 1,137
G10 360 960,875 10.6 3.9





450 12,480 828
G11 180 957,634 10.6 4.1





562 11,397 2,111
G12 120 960,231 11.2 4.3





930 10,894 1,868
G13 70 959,952 11.2 4.1





869 12,212 1,502
G14 260 955,157 14.5 5.0





2,137 13,307 2,025
204-1244E-15P (102.1 mbsf)










G1 90 268,925 5.5 1.2





72,741 633,256 224
G2 330 742,137 11.5






13,743 231,071 225
G3 410 690,349 9.3 2.1





13,443 287,268
G4 380 668,665 7.0 6.1





9,894 305,853 193
G5 560 697,888 7.3






8,684 287,700 463
G6 460 747,744 7.5 3.2





6,597 239,263 399
G7 580 823,931 8.4 4.8





5,070 155,159 1,340
G8 290 802,125 9.6 4.9





6,159 180,496 1,032
G9 120 776,182 9.9 5.0





8,744 203,411 670
G10 90 773,196 10.4 5.2





5,905 207,875 428
204-1244F-4P (23.1 mbsf)










4P-G1 595 875,610 7.5 6.0





13,151 72,967 5,255

Notes: All samples were analyzed by the natural gas analyzer. Samples from Core 204-1244C-18P were also analyzed by gas chromatography (GC). C1 and C2 concentrations are given as a sum for Cores 204-1244C-14P and 16P, and corrected concentrations based on GC analyses are given for Core 18P. C1 = methane, C2 = ethane, C3 = propane, i-C4 = isobutane, n-C4 = normal butane, i-C5 = isopentane, n-C5 = normal pentane, i-C6 = isohexane, n-C6 = normal hexane, O2 = oxygen, N2 = nitrogen, CO2 = carbon dioxide. Blank cells = below detection limit.