Asian Journal of Geological Research <p style="text-align: justify;"><strong>Asian Journal of Geological Research</strong> aims to publish high-quality papers (<a href="/index.php/AJOGER/general-guideline-for-authors">Click here for Types of paper</a>) in all areas of Geology. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer-reviewed, open access INTERNATIONAL journal.</p> Asian Journal of Geological Research en-US Asian Journal of Geological Research Petrology, Geochemistry and Structural Attributes of the Irruan Basement Rocks, Southern Obudu Plateau, Southeastern Nigeria <p>Very little research has been carried out and reported on the Irruan granitoids. Geological field mapping and laboratory analyses were carried out to ascertain the petrological, geochemical and structural attributes of the Irruan Basement Rocks in southern Obudu Plateau, southeastern Nigeria. Five petrological units: granite gneiss, banded gneiss, migmatite gneiss, granodiorite and biotite granite were identified in the area. The rocks are generally siliceous and quartzofeldspathic, recording ≥70.11 wt.% of SiO<sub>2</sub> except the biotite granite that records 61.10 wt.% of SiO<sub>2</sub>; quartz ranges from 25 – 35%, 30%, 20 – 27%, 22 – 35% and 30% for granite gneiss, banded gneiss, migmatite gneiss, granodiorite and biotite granite respectively. Feldspar ranges from 20 – 35%, 22 – 25%, 20 – 27%, 20 – 30% and 25% respectively for the granite gneiss, banded gneiss, migmatite gneiss, granodiorite and biotite granite. Relative to plagioclase, orthoclase is more dominant in many of the samples. Biotite and muscovite range from 5 – 15%. The metamorphosed rocks are predominantly peraluminous, showing aluminum saturation index (ASI) ranging from 1.05 to 3.37 and (Na<sub>2</sub>O + CaO)/Al<sub>2</sub>O<sub>3</sub> ratios of 0.27 – 0.95 and average A/CNK of 1.13. Generally, there are marked variations in the distribution of trace elements with Rb/Nb, Rb/Zr and Rb/Sr ratios of ≤25,000, ≤0.5319 and ≤0.7377 respectively. The granitoids have resulted from the partial melting of the crust with possible contribution from mantle-derived, crust-contaminated magma.&nbsp; On the outcrop scale, fractures occur in NW-SE, NE-SW, NNE-SSW, E-W and N-S orientations. Evidences of primary and secondary structures were observed. The dominant NE-SW fractures were developed contemporaneously with the foliations and lineaments. The N-S and fairly weak E-W fracture sets were developed from a later episode.</p> E. O. Ominigbo E. E. Ukwang O. O. Omo- Irabor J. E. Emudianughe D. P. Okumoko ##submission.copyrightStatement## 2021-01-13 2021-01-13 1 18 Post Foundation Geophysical Investigation of the Former Faculty of Arts Building, Ekiti State University, Ado-Ekiti, Nigeria <p><strong>Aims: </strong>This study entails the geophysical approach for the post foundation investigation using magnetic prospecting and impact method of electromagnetism.</p> <p><strong>Study Design:</strong> Traverses and GPS stations of the area were taken.</p> <p><strong>Place and Duration of Study:</strong> The former Faculty of Arts building at Ekiti State University. Ekiti State University is located along Ado-Iworoko road in Ado-Ekiti, Ekiti State which is located in southwestern Nigeria. The work was on 3<sup>rd</sup> of October 2019.</p> <p><strong>Methodology:</strong> The instrument used in the ground magnetic data acquisition was the proton precession magnetometer. The study area was divided into four traverses that are 100 m long perpendicular to the strike line i.e. the traverse runs from east to west of the study area. A spacing of 5 m serving as stations were maintained on each traverse making a total of eighty stations was accumulated for the four traverses. The impact method of electromagnetics was carried out immediately after the ground magnetic method, the only alteration was the establishment of sub-stations immediately after each station at 2.5 m away from the main station at each traverse. The creation of sub-stations is to comb the study area and obtain a concise data so as to delineate each of the subsurface structures.</p> <p><strong>Results:</strong> The generated geomagnetic contour map of the study area indicates that the central region with high magnetic value implies competent formation, while the extreme North West has low magnetic values suggesting unstable formation. Electromagnetic Profiles of Traverse EFA-1 is a very conductive zone from top to bottom and can be classified as a very weak zone. It cannot bear the load of the structure that was placed on it and thus not a safe site. The weakness of the zone may lead to differential settlement. Traverse EFA-2 defines a fairly competent zone of weathered or a fractured bedrock typically a weathered zone of intermediate value; it can still bear the load of a structure. Traverse EFA-3 is a zone of weathered/fractured bedrock. It has an intermediate potential and evidence of a linear fracture. In traverse EFA-4 is not a competent zone of low to intermediate value. The low value zones may be seasonally wet and dry which can affect the stability of the foundation.</p> <p><strong>Conclusion:</strong> Data analysis delineated suspected fractured, shear or faulted zones and also revealed that the collapsed Faculty of Arts building was sited within the incompetent clayey weathered layer; these weak zones were detrimental to the integrity and stability of the structure.</p> Henry Y. Madukwe Ifeoluwa J. Talabi ##submission.copyrightStatement## 2021-01-28 2021-01-28 19 32 Prelude Geological Survey and Evaluation of Au, Cu Bearing Rock Using Energy Dispersive X-Ray Fluorescence Analysis: A Case of Shuwa, Madagali <p>A prelude geological study have been carried out for the evaluation of gold (Au) and copper (Cu) bearing rock formation of Shuwa District in Madagali LGC and its environs, Adamawa State. Samples were collected and analysis using Energy dispersive X-Ray Fluorescence analysis. The results obtained from the study location reveals that the most prominent mineral formation within the study area is copper oxide (CuO) which accounted for about 42.05% of the mineral presence within the rock sample with 8.80% of Ti0<sub>2 </sub>mineral deposit in association with other minerals occurring as trace elements including gold with 0.04% presence. This research shows that the dominant mineral in terms of economic potential for exploration is copper while gold may not be of any economic viability within the investigated area.</p> U. Z. Magawata, ` M. A. Bawallah S. O. Ilugbo S. Aliyu A. Adamu ##submission.copyrightStatement## 2021-03-03 2021-03-03 33 39 Assessment of Dust Concentration and Compounds at Quarry Sites in Akamkpa Cross River State, Nigeria <p>This study assessed dust concentration, elements and compounds at limestone quarry site and the aim was to determine the level of air pollution due to dust generated from quarrying activities, the elements and risks it poses to health and the environment. Dust samples were collected using a 224-PCXR4 sample pump and analyzed for concentrations and harmful elements/compounds constituents. The results shows that dust concentration at the quarry site was quite high on the average 51.56 mg/m<sup>3</sup>, when compared with the limit 10 mg/m<sup>3</sup> and the study revealed that the crushing plant had more dust concentration of 92.5 mg/m<sup>3</sup> than all the other working areas. Quarry pit had the second highest concentration, followed by garage and the office areas in descending order. three main harmful elements/compound detected in the sampled dust are; silicon dioxide with a mean concentration of 0.62 mg/m3, chromium 5.92 mg/m<sup>3</sup> and lead 9.24 mg/m<sup>3</sup> respectively.</p> <p>The study recommends that environmental management systems, which include a dust management plan, should be employed at the quarries in order to mitigate dust generation. Particularly during drilling/blasting of rocks and at the crushing plant.</p> Godwin Igie Inyaka M. Alkali Emeodilichi H. Mba Udofia Udeme Alfred ##submission.copyrightStatement## 2021-03-19 2021-03-19 40 47