http://journalajoger.com/index.php/AJOGER/issue/feed Asian Journal of Geological Research 2019-11-11T12:55:51+00:00 Asian Journal of Geological Research contact@journalajoger.com Open Journal Systems <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> http://journalajoger.com/index.php/AJOGER/article/view/30092 Geoelectrical Investigation Using Schlumberger Array for Groundwater Occurrence in Part of Bosso Estate Minna Sheet 164 SW North-Central Nigeria 2019-11-05T09:05:20+00:00 Ochekpo John Emmanuel Alkali Yahaya Baba <p>Inadequate potable water supply remains one of the challenges of residents of Bosso Estate in Minna Metropolis, Niger State, Nigeria owing to the Basement Complex terrain underlying the area. Rapid increase in population in the area over the years, which is due to its proximity to Federal University of Technology Minna (Bosso Campus) and the nation’s capital city (Abuja) among others. This has led to increase in the demand for potable water supply for domestic use since public water supply by government is inadequate. Consequently, in a quest to seek for Groundwater as a reliable source of water supply for domestic need, various abortive boreholes have been drilled without proper geophysical survey. This has led to loss of valuable time, energy and money. Therefore, Geoelectrical investigation using Schlumberger array was carried out with a view to delineate zones with good groundwater occurrence.</p> <p>A locally made Terrameter (resistivity meter) of high precision was used for data acquisition. Schlumberger array was used to obtain geophysical data at ten (10) VES stations in the area. Field data obtained were analysed and interpreted using Win RESIST and Surfer Software which gives an automatic interpretation of the apparent resistivity data. Results from the interpretation revealed these curve types: the HK, H KH and A whereas three to four (4) geoelectric layers which consist of Topsoil layer, Lateritic clay, Weathered/fractured basement and Fresh basement. Fractured/weathered basement has resistivity values ranging from 35.5 to 841.62 Ωm and thickness variation of 13.5 to 48.5 m. This weathered /fractured layer constitutes the aquifer zones in the area. The fresh basement has resistivity values as high as 7336 Ωm and above. The groundwater potential in the study area was classified into high, medium and low/non groundwater potentially occurring zones. High groundwater potential zones were found at VES station 01, 02, 03, 04, 07 and 08 corresponding to the North-Eastern, Central and North-Western parts. This survey revealed aquifer zones having thickness ranging from 20 to 40 m and depth to bedrock ranges from 8.7 to 55 m. A recommended minimum depth for drilling borehole in the study area is about 46 to 60 m. The study however recommends an integrated geophysical method for future groundwater exploration in the area.</p> 2019-11-05T00:00:00+00:00 ##submission.copyrightStatement## http://journalajoger.com/index.php/AJOGER/article/view/30093 Lithological Characteristics of XY Field, Shallow Offshore Niger Delta Basin, Nigeria 2019-11-07T10:40:31+00:00 Alkali Y. Baba Jacinta N. Chukwuma-Orji Owoeye O. Oluwafemi femiseunowoeye@yahoo.com Taiwo M. Opeyemi <p><strong>Aims: </strong>The purpose of this study is to delineate litho-stratigraphic sequences penetrated by well 01, 02 and 03 within the XY field and also to describe the litho-stratigraphic characteristics of the sequences delineated using ditch cuttings, textural/lithological attributes and the distribution of the index minerals (ferruginous material, glauconites, carbonaceous detritals and shell fragments.</p> <p><strong>Study Design:</strong>&nbsp; The result of the lithostratigraphic analysis carried out on three wells from the XY field are presented and discussed.</p> <p><strong>Place and Duration of Study:</strong> The study was carried out in the shallow offshore Western Niger Delta, Nigeria from wells 01, 02 and 03 of XY field from July 2018 to September 2018.</p> <p><strong>Methodology:</strong> The ditch cutting samples for the three wells were lithologically analysed under a stereo-binocular microscope Olympus model SZ 2 ILST. The dominant and secondary rock types, colour, average grain size, roundness, sorting and accessory minerals, sand-shale percentage, fossil and nature of cement and stage of diagenesis were the parameters used for the assessment of the samples. The lithologic descriptions were complemented using logs analyses.</p> <p><strong>Results:</strong> Lithological investigation of the three wells reveals that the lithofacies are generally made up of grey to dark grey shale and mudstone/siltstones interbedded with fine-medium and coarse-grained sandstones. Two units of lower paralic sequence and upper paralic sequence were assigned to the studied section of the three wells, based on their lithologic characteristics. The lower unit is composed mainly of shale and mudstone/siltstone interbedded with sands, while the upper unit is dominantly sanded alternating with shales/mudstones. On the basis of the foregoing, only one of the three formational units of Niger Delta was encountered.</p> 2019-11-07T00:00:00+00:00 ##submission.copyrightStatement## http://journalajoger.com/index.php/AJOGER/article/view/30095 Artisanal and Small-scale Gold Mining in Syanyonja, Busia Gold District, South Eastern Uganda: Impacts on the Mining Population and the Environment 2019-11-11T12:55:51+00:00 Timothy Omara prof.timo2018@gmail.com Shakilah Karungi Stephen Ssebulime Kibet Mohamed Kiplagat Ocident Bongomin Remish Ogwang Solomon Akaganyira <p class="MsoNormalCxSpFirst" style="margin-bottom: .0001pt; mso-add-space: auto; text-align: justify; text-justify: inter-ideograph; line-height: normal;"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">Aims: </span></strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">To determine the amount of mercury discharged into Namukombe stream, the major water body in Syanyonja village, Busia gold district and investigate the impacts of mercury-based artisanal and small-scale gold mining (ASGM) on the mining population and the environment. </span></p> <p class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; mso-add-space: auto; text-align: justify; text-justify: inter-ideograph; line-height: normal;"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">Study Design:</span></strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;"><span style="mso-spacerun: yes;">&nbsp; </span>Quantitation of mercury discharged with tailings was done by mass balance method. Field survey at the mining sites was done followed by administration of questionnaires to 50 stampeders in the village.</span></p> <p class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; mso-add-space: auto; text-align: justify; text-justify: inter-ideograph; line-height: normal;"><strong style="mso-bidi-font-weight: normal;"><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">Place and Duration of Study:</span></strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;"> The study </span><span style="font-size: 10.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: 'Times New Roman';">was done in Syanyonja village in Syanyonja parish, Busitema subcounty, Samia Bugwe constituency, Busia gold district, South East of the Republic of Uganda between April 2019 to June 2019</span><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">.</span></p> <p class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; mso-add-space: auto; text-align: justify; text-justify: inter-ideograph; line-height: normal;"><strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">Methodology:</span></strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;"> F</span><span style="font-size: 10.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: 'Times New Roman';">ieldwork was done in Syanyonja village to appreciate the level of<span style="mso-spacerun: yes;">&nbsp; </span>environmental pollution due to mercurial ASGM in the area. </span><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">Quantitation of mercury discharged with tailings was done by mass balance method. Field survey at the mining sites was done followed by administration of 50 questionnaires to stampeders of at least 18 years old and ASGM experience of not less one year.</span></p> <p class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; mso-add-space: auto; text-align: justify; text-justify: inter-ideograph; line-height: normal;"><strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">Results:</span></strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;"> About 8% of mercury mixed with auriferous materials is lost in tailings, accounting for an annual mercury release of about 1.757 kg into the environment. Socio-demographic<span style="mso-spacerun: yes;">&nbsp; </span>results indicated that the majority of the mining population (64%) are male and ASGM have left human health and environmental footprints, which directly or indirectly affects the population. </span><span lang="EN-AU" style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri; mso-ansi-language: EN-AU;">The most common health problems among miners are malaria (36%) and abdominal pain (20%). </span><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">The standard of living of the miners are evidently low, and most mines are characterized by school dropouts, prostitutes and thieves. Mining sites have deplorably poor hygiene, with evident burning of amalgams to recover gold. </span></p> <p class="MsoNormalCxSpMiddle" style="margin-bottom: .0001pt; mso-add-space: auto; text-align: justify; text-justify: inter-ideograph; line-height: normal;"><strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;">Conclusion:</span></strong><span style="font-size: 10.0pt; mso-bidi-font-size: 11.0pt; font-family: 'Arial','sans-serif'; mso-fareast-font-family: Calibri;"> ASGM have been accompanied by wanton mowing down of vegetation, land degradation as well as mercuric pollution of water, air, land and aquatic ecosystems. It is suggested that the Ugandan government should re-enforce committees to follow up on ASGM activities and train artisans on sustainable (non-mercury) alternative gold extraction methods that do not create new toxic exposures such as using borax, magnets and sluice boxes. Artisans should take up farming actively as an alternative.</span></p> 2019-11-11T00:00:00+00:00 ##submission.copyrightStatement##