Table T5. Carbon isotopic composition of methane and carbon dioxide in PCS gas.
Core, section,
interval (cm)
Depth
(mbsf)
C1/C2
13C ( PDB)
C1
CO2
204-1244C-
14P 120.0
–64.5
16P 131.0
–65.4
16P-2 131.0
–66.4
18P 142.0
–66.3
18P-G2 142.0
–66.6
204-1244F-
4P-G1 23.6 117,374 –71.3 1.6
204-1244E-
6P-G1 64.5
–68.9
11P-G4 75.8
–68.1
204-1245B-
17P

–65.1 6.3
33P-G1 291.7 4,417 –65.1 –6.6
33P-G2 291.7 11,106 –65.6
33P-G3 291.7 13,335 –66.1 –7.3
33P-G4 291.7 11,982 –63.2
33P-G5 291.7 10,983 –65.1 –3.2
33P-G6 291.7 10,804 –65.5 0.7
204-1245C-
3P-G1 total 17.5 48,785 –75.1
8P-G1 57.5 73,546 –68.7
8P-G2 57.5 179,625 –68.8
8P-G3 57.5 5,879 –66.7
8P-G4 57.5 147,119 –66.5
8P-G5 57.5 143,493 –68.5 –3.1
8P-G6 57.5 55,635 –67.5 –3.5
8P-G7 57.5 114,987 –67.6 –3.9
8P-G8 57.5 105,301 –68.1 –3.4
16P-G3 120.5 4,211 –67.6
16P-G4 120.5 4,179 –66.8
16P-G5 120.5 4,055 –67.9
16P-G10 120.5 3,645 –67.6
16P-G15 120.5 3,473 –66.1
16P-G20 120.5 3,060 –67.6
16P-G25 120.5 3,127 –68.2 –2.2
16P-G30 120.5 2,580 –67.8 2.0
204-1247B-
4P-G1 23.1 460,317 –72.2
16P-G1 123.8 60,728 –67.9
16P-G4 123.8 3,866 –68.3
16P-G5 123.8 2,504 –67.7
16P-G8 123.8 2,381 –67.5
16P-G12 123.8 2,666 –66.4
16P-G15 123.8 2,515 –67.2
16P-G16 123.8 2,083 –67.3 –5.4
204-1249C-
6P-G7 34.0 616 –65.1
6P-G11 34.0 645 –65.3 0.1
6P-G17 34.0 636 –64.7 2.4
204-1249F-
4P-G1 14.0 664 –71.8 1.6
4P-G2 14.0 1,026 –65.8 –11
4P-G3 14.0 1,006 –65.2
4P-G6 14.0 951 –60.4 –13.7
4P-G7 14.0 1,100 –65.5 –4.1
4P-G8 14.0 1,317 –65.5 –8.1
4P-G9 14.0 1,394 –65.4
4P-G10 14.0 1,252 –65.5 –12.1
4P-G11 14.0 984 –65.4
4P-G13 14.0 753 –66
4P-G14 14.0 786 –65.1
4P-G18 14.0 783 –65.4 –18.1
4P-G22 14.0 689 –65.9 –3.1
4P-G28 14.0 746 –65.6 –3.1
4P-G35 14.0 663 –67
4P-G49 14.0 679 –65.4
4P-G68 14.0 725 –65.3 –8.4
4P-G71 14.0 661 –65.5 1.6
4P-G82 14.0 619 –65.8 –8
4P-G96 14.0 555 –65.6 –3.4
204-1250D-
5P-G1 35.5 18,050 –70.3
5P-G2 35.5 16,571 –69.1
5P-G3 35.5 14,995 –68.8
5P-G4 35.5 16,483 –69
204-1250F-
4P-G4 119.5 917 945 –66.5
204-1251B-
12P-G3 104.6 58,968 –68.5 1.7
18P-G3 154.1 86,669 –68 3.0
35P-G4 291.1 4,755 –62.2
204-1251D-
6P-G4 46.4 119,668 –70.2
10P 69.4
–69.2 –2
21P-G3 173.9
–67.1
29P-G5 228.0 7,949 –65.4
204-1251G-
2P-G4 20.5 180,577 –71.1 –7.3

Note: PDB = Peedee belemnite.