Table T10. Composition of headspace gases, Site 1253.
Core, section,
interval (cm)
Depth
(mbsf)
CH4
(ppmv)
C2H6
(ppmv)
C3H8
(ppmv)
CH4/
C2H6
205-1253A-




1R-1, 29-34 370.29 3 0 0 ND
2R-3, 0-5 378.14 3 0 0 ND
3R-1, 31-35 385.51 3 0 0 ND
4R-4, 5-10 399.15 3 0 0 ND
10R-1, 72-73 430.62 21 2 0 14
11R-1, 95-96 437.05 2 0 0 ND

Notes: ppmv = parts per million by volume. ND = not determined.