Scholarly work in the Department of Geology and Mineral Sciences

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Browsing Scholarly work in the Department of Geology and Mineral Sciences by Author "Dairo Victoria Abiola"

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    Assessment of Groundwater Quality in Parts of Ijoko Area, Sango-Otta Axis of Southwestern Nigeria
    (Scientific Review, 2019) Dairo Victoria Abiola; Fagoyinbo Victor Oludare; Mac-tyger Godson
    A total of 26 water samples comprising of well, river and borehole waters were subjected to physico-chemical tests to evaluate its quality. The result of the physical characteristics shows that the average pH value, total dissolved solid and electrical conductivity is 4.9, 1027.31mg/L and 1526.92mg/L respectively. Thus, relatively above the desirable limit for drinking water while the ionic dominance of the major cations and anions reveal high concentration of Na+ and Cl- amidst other ions in the order of Na+>Ca2+>Mg2+> K+ and Cl->HCO3- > SO42- respectively wherein the water was classified as belonging to Na-Cl facies and unsuitable for irrigation purpose.
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    Biozonation and Correlation of Two Wells in Niger Delta Using Calcareous Nannofossils
    (Acta Palaeontologica Romaniae, 2016) Dairo Victoria Abiola; Oladiran Mary Olutimilehin
    Two wells drilled in the offshore of Niger Delta were biostratigraphically analyzed and correlated, based on their calcareous nannofossils content. The 98 analyzed samples were collected from the Well MAY-01 at interval range of 40ft. (12.19m) to 120ft (36.58m) from the depth of 4050ft. (1234.40m) to 11700ft. (3566.16m), while in the second well, Well MAY-02, at interval range of 30ft (9.12m) from the depth of 7200ft. (2194.56m) down to 9850ft. (3002.28m). In all, twenty calcareous nannofossil species were identified and used for biozonation and correlation. The distribution of the calcareous nannofossil species in the two wells enabled the establishment of zones belonging to the upper Miocene; NN9 and NN11, while NN10 was not recorded. The most abundant calcareous nannofossils identified are Discoaster hamatus, Discoaster berggrenii, Discoaster quinqueramus, Ceratolithus armatus and Ceratolithus cris-tatus. The two biozones of calcareous nannofossils identified from May-01 and May-02 wells were correlated based on their short stratigraphic range and found to be similar in the two studied successions.
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    Foraminifera biostratigraphy and paleoenvironmental studies of well-x, eastern Niger delta
    (International Journal of Advanced Geosciences, 2021) Adewole John Adeola; Dairo Victoria Abiola; Adeola Samuel Ibukunoluwa
    Ditch cutting samples from Well-X drilled in the Eastern part of the Niger delta were subjected to biostratigraphy and paleoenvironmental studies using micropaleontological analysis to identify the foraminifera present in the sections penetrated by the well. A total of 50 (fifty) foraminifera species made up of benthonic and planktic spp were recovered from the sections. The marker species identified are Globorotalia acostaensis, Globorotalia mernadii cultrate, Neogloboquadrina dutertrei, Globorotalia plesiotumida, Globorotalia obesa, Globorotalia nepenthes, Sphaeroidinella subdehiscens, Neogloboquadrina dutertrei, Globigerinoides sudquadratus. The four (4) biozones identified are N16 (Late Miocene 9.5Ma - 10.9Ma), N15-N14, N13-N12 and N12-N11 (Middle Miocene with corresponding ages 10.9Ma -11.8Ma, 11.8Ma-12.2Ma and 12.2Ma respectively). Using the encountered benthonic foraminiferal species, the paleoecology was determined; and it was revealed that the paleoenvironment of the section ranges from Inner Neritic to Outer Neritic Environment. Also, the lithological analysis revealed an intercalation of Shale, Mudstone and Sand which indicates various paleoecological episodes that led to their deposition. The age of the well was inferred from the bioevents of the marker species to be Middle Miocene to Late Miocene with the sparse occurrence of the Calcareous Benthic and the Plankonic species suggesting a shallow marine environment.
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    Groundwater Contamination and Effective Ways of Rectification
    (International Journal of Information Research and Review, 2016-01) Fagoyinbo Victor Oludare; Dairo Victoria Abiola
    Groundwater contamination is a common occurrence the world over. When it occurs, it is very difficult and expensive to overcome. Since groundwater is a major source of potable water and the most widespread, it is very necessary to explore all avenues to avert its contamination. The impact that contamination has on groundwater, its environment and consumers were discussed. These include health hazard, imbalance in the ecosystem, water scarcity, negative economy and inflation. The various steps to prevent groundwater contamination such as efficient waste disposal method, safe storage and handling of hazardous materials and protection of chemicals or waste from floods and rainfall percolating underground were briefly discussed. Also discussed under prevention are good management of waste products, monitoring of storage tanks and pipelines, well monitoring as well as formulation of an effective Water Policy. The solution to contamination are broadly grouped into two; namely ex-situ and in-situ technologies. Some case studies were analyzed for future references.