Table T6. Composition of gas from analyses of decomposed samples of gas hydrate, Hole 1247B.
Core, section, interval (cm)
Depth (mbsf)
C1
(ppmv)
C2 (ppmv)
C3 (ppmv)
i-C4 (ppmv)
n-C4 (ppmv)
CO2 (ppmv)
O2 (ppmv)
N2 (ppmv)
C1/C2
204-1247B-









12H-2, 41-51 93.01 952,222 39.43
NA NA NA NA NA 24,150
12H-2, 41-51 93.01 957,557 38.53


3519 1667 1506 24,852

Note: C1 = methane, C2 = ethane, C3 = propane, i-C4 = isobutane, n-C4 = normal butane, CO2 = carbon dioxide, O2 = oxygen, N2 = nitrogen. NA = not analyzed. Blank cells = below detection limit.