Lipid Analyses of Sediments from Site 364 in the Angola Basin, DSDP Leg 40

The lipids extracted from samples in the Angola Basin (Site 364) were examined for terrigenous components.A Pleistocene sample contained H-alkanes and «-fatty acids of both autochthonous origin and terrigenous influx from the Zaire River.The paleoenvironmental conditions were oxic.A Cretaceous sample, representative of the Aptian sapropelic sequence in the basin, contained lipids derived from both marine and terrigenous sources and was deposited under anoxic conditions.Diterpenoids and carbon isotope ratios were used as the primary indicators for terrigenous lipids.