http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/144 2026-02-17T15:38:53Z 2026-02-17T15:38:53Z Alabi, Omanayin, Y. A., Waziri, N. M., Onoduku, U. S A. A. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/19524 2023-10-23T12:03:08Z 2023-07-10T00:00:00Z

Title: Characterization of Pegmatites in Ogodo-Odobola Area of Idah Sheet 267NW, Central Nigeria Authors: Alabi, Omanayin, Y. A., Waziri, N. M., Onoduku, U. S A. A. Abstract: The pegmatites of Ogodo-Odobola area around Ajaokuta, Central Nigeria belong to the pegmatite belt of Central Nigeria. A detailed geological mapping of the pegmatites and host rocks was conducted with the aim of understanding their mode of occurrence and field relationship and to assess their mineralization potentials. Twelve (12) representative samples of rocks were selected for petrographic analysis. The results show that the area is underlain by migmatite-gneiss, schist, with intrusions of granite and pegmatite. The pegmatites occur in tabular form with varying widths (2 centimetres – 6 metres) and lengths (12 – 200 metres). Principal joint direction is NNE-SSW which is believed to have influenced the pegmatite emplacement. Petrography of the representative rock samples revealed an average mineralogical composition of biotite (23.90%), microcline (22.15%), hornblende (15.05%), quartz (10.65%), plagioclase (10.35%), muscovite (8.00%), myrmekite (0.20%), and opaque and accessory minerals (9.70%). The pegmatites were found to be dominated by microcline and plagioclase feldspars, and then muscovite, biotite, and accessory and opaque minerals. The pegmatite of the Ogodo-Odobola area is worth probing as the results have shown prospect for possible economic minerals. Keywords: Mineralization, Basement Complex, Structural Features, Petrography, Ajaokuta Description: xxx

2023-07-10T00:00:00Z Alabi A. A., Christopher Imouhkai Unuevho, Oseremen Sarah Julius, Adekola Amos Alabi, Akobundu Nwanosike Amadi, Mamodu Adegbe and Saidu Saliu http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/19523 2023-10-23T11:55:53Z 2018-03-01T00:00:00Z

Title: Geotechnical Characterization of Geological Formation at Slump Sites Within South-Western Outskirts of Zungeru, North Central Nigeria Authors: Alabi A. A., Christopher Imouhkai Unuevho, Oseremen Sarah Julius, Adekola Amos Alabi, Akobundu Nwanosike Amadi, Mamodu Adegbe and Saidu Saliu Abstract: Slumping is destroying farmlands on the south-western outskirts of Zungeru. Sieve analysis and Atterberg limit tests were conducted on samples of geological formation from the slump and stable sites to ascertain the geotechnical attributes that make the area susceptible to slumping. Surface geological reconnaissance revealed that the area is underlain by schist, amphibolite and granite. The schist unconformably underlay Doko member of Bida Formation, which is the lithostratigraphic unit undergoing slumping. Coefficient of Uniformity (C U ) ranges from 0.57 to 3.48 at the slump sites. This indicates that the slump sites’ geological formation is poorly graded. Formation C U at stable site is 5, which indicates fair particle size grading. Natural Moisture Content (NMC) is 1.9% at the stable site. The value tripled (2.2 to 6.6%) at the slump sites. Atterberg limits’ value is similar at all the sites. Their liquid limit is less than 40%. Their plastic limit and plastic index are less than 20% and 7% respectively. The low Atterberg limits’ value indicates that clay shrinkage and swelling is not responsible for observed slumping. Poor formation particle size grading and high NMC caused slumping in the area. Description: XXXX

2018-03-01T00:00:00Z Olasupo, Alabi, A. A B. A. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/16919 2023-01-09T12:27:07Z 2021-10-25T00:00:00Z

Title: GEOLOGY AND INDUSTRIAL APPLICATIONS OF KWAKUTI MARBLE, NORTH-WETERN NIGERIA Authors: Olasupo, Alabi, A. A B. A. Abstract: Carbonate sedimentary rock formed at the bottom of lakes and seas as silt and organic matter that settle from the water body to the bottom. It is formed as a result of the recrystallization of limestone. It is composed essentially of calcite (CaCO3), but it is called dolomite CaMg(CO3)2 when its magnesium content is high. Generally pure marble is composed of total CaCO3 content of between 97% - 99%, and pure dolomite is composed of 45.7% MgCO3 and 54.3% CaCO3 or 30.4% lime (CaO) and 21.8% magnesia (MgO). Despite abundant reserves of marble, not very much of the country’s marble has been properly utilized. Kwakuti marble has so far been underutilized, therefore this research will unravel geology and economic potential of the study marble. Ten (10) samples of marble were selected for analysis using XRD and XRF techniques. Comparison of the chemical composition of Kwakuti marble with typical calcitic and dolomitic marbles; the Kwakuti marble compare favourably with typical calcitic marbles from different environments. Comparing the study marble to standard and specification it revealed that the Kwakuti marble is well suitable for agricultural productions. Description: XX

2021-10-25T00:00:00Z Unuevho, C.I. http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/16214 2022-12-28T22:55:32Z 2008-05-01T00:00:00Z

Title: WELL-SITE DIAGNOSIS OF THE STRATIGRAPHIC TOP OF AGBADA FORMATION FROM INTEGRATED PHYSICAL AND SEDIMENTOLOGICAL DATA: NW NIGER DELTA Authors: Unuevho, C.I. Abstract: Accurate lithostratigraphic correlation is the key to the successful performance of a well-site geologist’s functions. The recognition of the stratigraphic top of the Agbada Formation is a pre-requisite for effective lithostratigraphic correlation in the NW Niger Delta. It is the Agbada Formation that contains the drilling objective sands in this portion of the Niger Delta. The lithostratigraphic interval is determined by diagnosing sedimentary environments, using integrated physical and sedimentological data. The physical data are formation natural radioactivity (expressed as gamma ray values), spontaneous potential and resistivity and penetration rate measurements. The key sedimentological data is the presence of glauconite. The stratigraphic top of the Agbada Formation is fixed at the base of the fluvial continental lithofacies. This is automatically the top of the shallowest marine facies. This approach is easier than using marine fauna method to define the top of the shallowest marine shales. Integrated physical and sedimentological data gives a more credible result because the top of the Agbada Formation is not a sharp boundary. Real time accurate correlation is facilitated if MWD [measurement while drilling] or LWD [logging while drilling] resistivity and gamma ray data are available.

2008-05-01T00:00:00Z