Figure F29. Mass chromatograms (m/z 85) of aliphatic hydrocarbon extracted from Samples 208-1266A-2H-5, 140–150 cm, and 208-1266C-11H-CC, 0–1 cm. Results from Sites 1263 and 1264 are also shown for comparison. Note the remarkable similarity in relative abundance of n-alkanes (n-C14–18) pristane and phytane in samples from the Oligocene and above.

Figure F29. Mass chromatograms (m/z 85) of aliphatic hydrocarbon extracted from Samples 208-1266A-2H-5, 140–150 cm, and 208-1266C-11H-CC, 0–1 cm. Results from Sites 1263 and 1264 are also shown for comparison. Note the remarkable similarity in relative abundance of n-alkanes (n-C_14–18) pristane and phytane in samples from the Oligocene and above.