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Palynological and hydrocarbon potential of Eocene Nanka Formation was investigated from subsurface shale sample recovered between the depth 17 to 28 meters at Agulu Lake south eastern Nigeria. The Rock-eval pyrolysis results recorded shows that Total organic carbon (0.40), S1 (0.03) and S2 (0.23) of the analyzed sample has a petroleum potential that is poor in quality. Production Index (0.10) and Tmax (412) records indicates that the stage of thermal maturity for its oil is mature. Hydrocarbon Index (58) and Oxygen Index (101) results suggest a Type IV Kerogen. The kerogen investigation indicates that particulate organic matter, spore and pollen colouration and vitrinite reflectance results obtained from the simple is at an immature thermal oil maturity stage. The age-diagnostic index palynomorphs species recovered assigned a MiddleEocene for the studied area. The results suggests that Agulu lake, which is mid-Eocene has a hydrocarbon record of type IV kerogen, immature stage of thermal maturity, poor source bed, but has organic matter that may generate oil.

iosr journal of applied geology and geophysics

Palynology, Source Rock Potential and Thermal Maturity of Eocene Nanka Formation (Ameki Group) In Anambra Basin: An Investigation of Agulu Lake, South-Eastern Nigeria