A 3.5-m gravity core taken from the Guaymas Basin, Gulf of California, was analyzed for lipids, humates, kerogens, and C1 to C8 hydrocarbons. The analyses were of interest due to the high geothermal gradient observed in the Guaymas Basin and the strong petroliferous odor of the sediment. Analyses were by gas chromatography (GC), GC-mass spectrometry, and stable isotope mass spectrometry. The bulk of the organic matter (humates and kerogens) was of marine origin and diagenetically immature. The molecular markers of the hydrocarbons, fatty acids, and ketones were of a predominantly marine autochthonous origin. A small and variable component of allochthonous lipids from terrestrial plants was also present. Methane was principally of biogenic origin, but the lower sections of the core contained significant concentrations (7 μg g-1 dry sediment) of petrogenic C2 to C8 hydrocarbons.
|Original language||English (US)|
|Number of pages||13|
|Journal||Deep Sea Research Part A, Oceanographic Research Papers|
|State||Published - Aug 1979|
All Science Journal Classification (ASJC) codes
- Environmental Science(all)
- Earth and Planetary Sciences(all)