A BIOFACIE STUDY OF AN OUTCROPPING UNIT AT IBII QUARRY SITE, AFIKPO BASIN, SOUTH EASTERN NIGERIA
A Biofacie study of an outcropping unit at the Ibii quarry site, Afikpo Basin, South Eastern Nigeria was carried out to determine the fossil assemblage of the samples in relation to its lithological variations in order to determine the age and paleoenvironment of deposition, using a total of ten samples obtained from the field. The samples were further subjected to lithological/Sedimentological and palynological analysis respectively. The results for the lithological/Sedimentological analysis which cuts across both processes of lithological description, lithofacie and wet sieve analysis showed that the samples were highly calcareous, and the lithofacie analysis showed the presence of authigenic minerals such as quartz, heavy minerals, muscovite, gypsum, and mica flakes respectively while the wet sieve analysis showed a high value of shale to sand ratio all of which further depicts a marginal marine to marine depositional environment. The palynological analysis yielded practically no Palynomorph to very scanty to low quantity of palynomorphs. The palynomorphs include; Psilatricolporites sp, Laevigasporites discordatus, Diatom and Fungal spore. Although the analysis yielded no environmentally significant Palynomorph, the presence of Diatom and fungal spore in most of the samples portray that the samples were probably deposited in a marine setting.
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