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Nosa Igbinigie
University of Benin
Earth & Planetary Sciences Engineering Environmental Science Physics

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Evaluation of the Hydrocarbon Potentials of Shale Exposures at Okpekpe in Edo North Alexander Ogbamikhumi; Nosa Igbinigie; Ovie Odokuma-Alonge
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 4 (2019): JGEET Vol 04 No 04: December 2019
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (484.686 KB) | DOI: 10.25299/jgeet.2019.4.4.2807

Abstract

This study evaluates the source rock characteristics of rock exposures along a newly exposed road cut in Okpekpe. An integrated technique of organic geochemical analysis and biostratigraphy evaluation were adopted to determine the source rock quality, Maturation index, kerogen types, depositional environment andsediment age. Results of organic geochemistry gave total organic carbon (TOC) value between 0.81 to 3.04 w.t% (2.08wt.% average) indicative of a good source potentials. The plot of Total Sulphur Content (TSC) against TOC suggests a transitional depositional environment for the samples while the plot of hydrogen index (HI) against oxygen index (OI) shows that the samples are capable of generating mixed type II/III kerogen. Palynological analysis revealed that the basal section of the exposure is characterized by the occurrences of typical and moderately rich Late Cretaceous – Early Tertiary palynomorphs. While the upper section is poorly rich in palynomorph abundance but with spot occurrences. The palynomophs asssemlages is of Late Maastrichtian - Early Paleocene and the outcrop is characterized by the presence of terrestrial pollens and spores indicating a continental to transitional depositional environment, typical of the Mamu Formation of the Anambra Basin.
Co-Authors Alexander Ogbamikhumi Ovie Odokuma-Alonge