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Lithofacies and petrophysical properties interpretation of reservoir rocks in shaka field, Onshore Niger Delta

This research covers lithofacies and petrophysical interpretation of reservoir rocks using well logs and core data from Well SHA-001 to understand the reservoir quality with respect to their depositional environments. Analysis was carried out on core sample of 84.3 feet from a depth range of 7176 ft – 7260.3 ft in well SHA-001 to identify and interpret lithofacies depositional environments. Six (6) Lithofacies were...

Author(s):Joshua Mene O., Kingsley Okengwu O and Eric Eche U

Article in Press

New nano-structured microcrystalline silica: fire agate

30 samples of fire agate (SiO2) from Mexican new deposits (State of Aguascalientes, Calvillo and Jesus Maria municipalities) were documented using Raman Microprobe (RMP), Infrared reflection (IRS) Spectroscopy, Scanning Electron (SEM), and Atomic Force Microscopy (AFM). Fire agate, a non-transparent variety with multicolored fire, show a higher degree of organization of homogeneous nano-structure which is built from the...

Author(s):Mikhail Ostrooumov

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Determining the optimum compressive strength of cemented paste backfill for artificial ground support in underground mines

This study was carried out to determine the optimum strength of cemented paste backfill for production of an economic backfill in an underground mine. Tailings samples from a copper mine, Namibia were collected and classified into three particle size range of +75µm, +150µm, +300µm for preparation of cemented-tailings paste. Tailings compaction was also carried out for a penetrometer (CBR) test to determine the optimum...

Author(s):Ajaka E.O

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Estimation of Swelling Potential of Enugu Shale Using Cost Effective Methods

The behavior of swelling soils is mainly governed by its mineralogical composition as well as its environmental factors and stress history. Enugu Shale is one of these shales that assessment of its soil swelling potential cannot only be based on its mineralogical composition alone. The identification of its clay mineral types is basic to understand the roles of other factors of swelling in the soils. The results of...

Author(s):Chidiebere Nnamani and Ogbonnaya Igwe

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Sedimentary facies analysis and depositional environments of the Buanji Group, Chimala (East), SW Tanzania

This work presents a facies analysis of Buanji Group based on field data. The succession is divided into two depositional sequences which are lower siliciclastic units (ranging between 600 – 750 m thickness) of the lower and middle Buanji and upper non-clastic – clastic strata (600 ± 20 m thickness) of the middle and Upper Buanji Units. Six lithofacies (conglomerate (F1), sandstone (F2), siltstone/mudstone (F3), shale...

Author(s):Godson Godfray and Joshua J. Mahwa

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PRELIMINARY INVESTIGATION ON THE QUALITY OF AMASIRI SANDSTONE (SOUTHEASTERN NIGERIA) AS CONSTRUCTION MATERIAL

The need to source for local construction materials that are appropriate for the massive developmental projects in Ebonyi State, southeastern Nigeria, has necessitated sampling and testing of the Maastrichtian Amasiri Sandstone in the Akpoha area of the state. Petrographic analysis and aggregate tests were conducted on six samples randomly selected from the rock deposit underlying the area. The petrographic analysis...

Author(s):Chioma Elizabeth Nwimo, Modestus Chijioke Ohaegbulem, Okechukwu Pius Aghamelu, Nonyelum Stella Iloanya, Chijioke Martin Nwachukwu

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Investigating the viability of geothermal potential within Benue state, central Nigeria from radiometric and high resolution aeromagnetic data

The study focuses on both (qualitatively and quantitatively) analysis of high resolution Aeromagnetic data for the estimation of geothermal potential within the eastern part of Lower Benue Basin and correlating the results from the qualitative analysis of Radiometric concentration data of the study area. The study area covers a total area of 18,150 km2 , six aeromagnetic sheets covers the area, major towns are Markudi,...

Author(s):Adebayo Adetona

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Geology and Genesis of Uranium Mineralization in Tarat Formation, Mining District of SOMAIR from Tim-Mersoi Basin, Northern Niger.

The study aimed at characterizing the geochemical compositions of Tarat Sandstones horst of uranium deposit in Arlit, Northern Niger. Induced Coupled Plasma - Atomic Emission Spectrometry (ICP-AES) and Induced Coupled Plasma-Mass Spectrometry (ICP-MS) analyses were used to determine the characteristics of studied sandstones. Field observations in Takriza, Taza North, Tamou open pit mines and Tamari Prospect and factor...

Author(s):BOHARI ABDOU DODO

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Litho-structural Features of the Precambrian Basement rocks of the Benin-Nigerian Shield, Northwestern Nigeria: Implications for their Probable Evolution from the Pan-African and Brasiliano Belts

We present the petrographic and structural features of the Precambrian (Neoproterozoic) Basement rocks of the Benin-Nigerian Shield that crop out in Northwestern Nigeria within Kanoma and its environs to give an insight on the evolution and deformational episodes that pervaded them. The major rock types in the area are schists and quartzites which have been intruded by granitic rocks. The origin of these rocks can be...

Author(s):Emmanuel Daanoba Sunkari, Basiru Mohammed Kore

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Risk Assessment in Open Pit Mining and Economic Uncertainty Modelling for Optimal Decision-Making using Stochastic Simulation - a Case Study of an Iron Ore Deposit

The key economic parameters to model risks and uncertainties for optimal decision-making in the planning of a mining project include commodity price, discount and monetary exchange rate. The current status of these key parameters is known but, the risk associated with their unknown values is of importance for decision making. In this research, economic variables such as, commodity price, mining costs, annual change in...

Author(s):ABU BAKARR JALLOH