GEOLOGY OF OZIZZA AND ENVIRONS, EBONYI STATE, NIGERIA

Ilochi, Somto Louise (2018) GEOLOGY OF OZIZZA AND ENVIRONS, EBONYI STATE, NIGERIA. Diploma thesis, Godfrey Okoye University.

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Abstract

Cretaceous sediments outcropped extensively in the Afikpo sedimentary basins. Detailed geological mapping of Ozizza and environs was undertaken in order to give a detail descriptions of the lithological features, stratigraphic relationships and contacts, sedimentary structures, and their paleontological contents. Sieve analysis, hydrological and palynological analyses of selected outcrop samples were carried out in order to reconstruct the depositional history of the sediments in the area and their provenance, assess the age of sediments and establish their paleoenvironments of deposition, and evaluate the hydrocarbon source rock potential and the degree of thermal maturation. Two main lithological units were encountered, which include sandstone and shale. Result from the sieve analysis indicates that the sandstones in the study area were mostly deposited in a beach and fluvial settings. Physicochemical results from heavy metals analysis indicated significant concentration of sodium (Na) in the water samples. Results from the palynological investigation revealed a Late Campanian to Earliest Maastrichtian for the sediments, with the following index sporomorphs assemblage: Cingulatisporites ornatus, Zlivisporis blanensis, Distaverrusporites simplex, Longapertites marginatus, Constructipollenites ineffectus, Monocolpites marginatus, Echitriporites trianguliformis,, Buttinia andreevi, and Retidiporites magdalenensis. Environmentally significant palynomorphs indicated that the sediments in the study area were deposited in a marginal marine/ nearshore brackish water environments of deposition, with minor marine influence. Kerogen analysis shows that all the sediments were mostly dominated by phytoclasts followed by opaque debris and AOM, giving rise to mostly type III kerogen, which are generally immature but have potential to generate gas.

Item Type:	Thesis (Diploma)
Subjects:	Q Science > QE Geology
Depositing User:	Louise Somtochukwu Ilochi
Date Deposited:	07 Aug 2018 12:00
Last Modified:	07 Aug 2018 12:00
URI:	http://eprints.gouni.edu.ng/id/eprint/603

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