Table 1

Gas compositions (% mol) under isothermal He flow over time

Floyd Shale, 50°C




time (min)
 Methane
 Ethane
 Propane
 i-Butane
 n-Butane
 i-Pentane
 n-Pentane
0
 15.92
 28.30
 23.48
 3.57
 13.53
 6.11
 9.10
8
 16.14
 33.23
 24.83
 3.24
 11.31
 4.41
 6.84
16
 15.53
 34.42
 25.87
 3.42
 11.07
 3.67
 6.02
24
 12.16
 32.54
 27.51
 3.95
 12.37
 4.54
 6.93
32
 11.34
 34.31
 27.97
 3.61
 12.00
 4.15
 6.63
40
 13.02
 34.43
 27.71
 3.40
 11.71
 3.70
 6.03
48
 11.36
 35.12
 28.13
 3.48
 11.89
 3.63
 6.40
56
 10.35
 35.41
 28.47
 3.54
 11.88
 4.15
 6.21
64
 11.58
 34.91
 28.28
 3.31
 11.67
 4.30
 5.95
72
 11.42
 34.76
 28.69
 3.60
 11.97
 3.72
 5.84
80
 11.08
 34.73
 28.35
 3.50
 11.61
 4.73
 6.00
88
 8.76
 36.37
 29.74
 3.47
 11.96
 3.66
 6.04
% var
 44
 12
 12
 1
 3
 12
 12

New Albany Shale, 100°C




time (min)
 Methane
 Ethane
 Propane
 i-Butane
 n-Butane
 i-Pentane
 n-Pentane
0
 3.30
 29.05
 36.68
 3.13
 17.24
 2.67
 7.92
4
 1.18
 37.08
 41.00
 3.12
 13.71
 1.39
 2.53
8
 1.02
 34.90
 39.13
 3.25
 15.96
 2.11
 3.63
12
 0.85
 34.13
 38.09
 3.07
 16.74
 2.43
 4.69
18
 0.75
 33.27
 39.63
 3.40
 16.67
 2.19
 4.09
21
 0.45
 27.45
 38.69
 3.88
 18.62
 3.50
 7.41
34
 0.46
 26.31
 38.24
 3.24
 18.00
 3.58
 10.16
45
 0.54
 26.19
 40.16
 2.94
 18.20
 2.92
 9.04
55
 0.70
 25.02
 41.61
 2.94
 18.38
 2.73
 8.62
65
 0.71
 23.68
 42.29
 3.09
 18.54
 2.86
 8.82
% var
 71
 75
 8
 2
 14
 16
 109

Mowry Shale, 100°C




time (min)
 Methane
 Ethane
 Propane
 i-Butane
 n-Butane
 i-Pentane
 n-Pentane
0
 9.15
 6.84
 19.12
 7.94
 22.71
 12.99
 21.25
8
 4.50
 4.34
 18.36
 11.25
 24.02
 17.57
 19.97
16
 3.86
 2.95
 16.79
 12.06
 24.43
 18.99
 20.92
24
 5.11
 3.16
 15.77
 11.40
 23.29
 19.53
 21.74
32
 -
 4.14
 16.06
 12.88
 24.50
 20.55
 21.87
40
 -
 -
 16.47
 13.14
 24.34
 22.81
 23.24
48
 -
 -
 15.97
 13.84
 24.98
 23.06
 22.15
56
 -
 -
 15.33
 14.44
 24.55
 23.15
 22.52
64
 -
 -
 15.27
 14.20
 23.92
 24.16
 22.45
72
 -
 -
 14.92
 15.17
 23.64
 23.71
 22.56
80
 -
 -
 11.21
 15.06
 23.40
 26.73
 23.60
% var
 101
 56
 26
 35
 2
 68
 5

Times are in minutes. Yields: Floyd, 57 μg C1-C5/g; New Albany, 1.2 mg C1-C5/g; Mowry, 25 μg C1-C5/g. % var is variance as % of mean. The dashes indicate no data. Average % variance is 14% in the Floyd data; 42% in the New Albany data; 42% in the Mowry data.

Mango and Jarvie Geochemical Transactions 2009 10:10   doi:10.1186/1467-4866-10-10

Open Data