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Structure, stratigraphy and sedimentology of the paleoproterozoic Nsuta manganese deposit, Ghana

  • Authors: Van Bart, Adrian
  • Date: 2008-07-18T13:42:03Z
  • Subjects: Manganese ores , Stratigraphic geology , Structural geology , Ghana
  • Type: Thesis
  • Identifier: uj:7367 , http://hdl.handle.net/10210/812
  • Description: The Nsuta manganese deposit is located in the Western Region of Ghana, approximately five kilometers south of Tarkwa Goldfields. The deposit has been an important source of manganese ore since mining began in 1916. The purpose of this project was to produce a concise model of the stratigraphy, sedimentology and structural evolution of the deposit in support of future exploration projects. The manganese ores occur as an up to 45m thick carbonate bed in a thick turbidite-greenstone succession that is part of the ~2.2 Ga Birimian Supergroup. Calc-alkaline volcanics, volcaniclastics, turbidites, argillites and phyllites are thought to have been deposited in a backarc basin environment. The entire sedimentary succession, including the manganese orebody, is a thick turbidite package hosted between an upper and lower greenstone unit consisting predominantly of volcaniclastic material. The entire lithological succession at Nsuta is interpreted to have been deposited within the middle to lower reaches of a submarine fan environment. Field evidence suggests a simple stratigraphy, commencing with a lower greenstone unit composed largely of volcaniclastic material. This is followed by an upward-fining lower turbidite unit deposited in response to a marked transgression and sea level rise. Maximum rate of sea level rise provided ideal conditions for manganese precipitation and concentration, as detrital influx ceased. The central portion of the carbonate orebody that formed hosts the manganese orebody. An upward-coarsening turbidite unit follows above the carbonate unit. This upward-coarsening succession reflects a regression and a highstand systems tract in terms of sequence stratigraphic principles. It is capped by an unconformity that formed during a period of rapid relative sea level fall. It is overlain by a second upward-fining turbidite succession. This succession is not fully preserved as there is a sheared contact between it and the overlying upper greenstone unit. Post-depositional deformation and metamorphic alteration are largely attributed to the Paleoproterozoic Eburnean Orogeny. A first phase of compression was directed along a NW-SE axis and produced a series of isoclinal anticlines and synclines (F1) with NE-SW striking axial planes. This was followed by thrusting between the anticlines and synclines. The age of this deformation and closely associated greenschist metamorphism can be accurately constrained between 2.09 Ga and 2.07 Ga. E-W oriented oblique listric faulting has a prominent effect on the appearance of the Nsuta manganese deposit, as it produced a series of imbricate fault blocks dipping to the north. Associated with this period of deformation is small-scale cross folding with axes plunging to the east (F2). The faults post-date the Eburnean Orogeny and must be associated with a second major tectonic event. Finally, a NNE-SSW striking normal fault, locally known as the German Line, caused further block rotation, notably in the northern parts of the mining concession. Late Mesozoic deep lateritic weathering and incision of the lateritic peneplane by modern rivers have resulted in the complex dissected appearance of the Nsuta orebody. However, based on the detailed structural analysis provided in this study, a feasible target for future exploration of manganese ore buried beneath Late Mesozoic and Cenozoic sediments and soils, has been identified. This target is located to the west of Hills A and B. , Dr. J.M. Huizenga Prof. Nic Beukes Prof. J. Gutzmer
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Conceptualised integrated Health and Safety compliance model for the Ghanaian construction industry

  • Authors: Mustapha, Zakari , Aigbavboa, Clinton , Thwala, Wellington Didibhuku
  • Date: 2015
  • Subjects: Compliance model , Construction industry , Ghana
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/73573 , uj:18427 , Citation: Mustapha, Z., Aigbavboa, C. & Thwala, W.D. 2015. Conceptualised integrated Health and Safety compliance model for the Ghanaian construction industry.
  • Description: Abstract: Lack of stringent measures in safety and construction laws has been attributed to poor performance in Health and Safety (H&S) in the construction industry. The review of literature in the existing body of knowledge becomes paramount in order to continue with the research on the subject matter. The review will enable the road map for the development of the conceptualised integrated H&S compliance model for the Ghanaian construction industry. The conceptualised model theory form the bases of the discussion in this paper. A total number of fifteen studies relevant to accident causation theories were selected out of the total number of thirty studies reviewed, through a rigorous process. The assessment of H&S compliance model for the study was carried out through the combination of objective and subjective attributes. The Domino Theory form the basis for theoretical and conceptual framework of this paper. The study adopted various constructs from Accident Root Causes Tracing Model (ARCTM) and Domino theory. The hypothesised integrated holistic H&S compliance model is presented in this paper based on an in-depth review of the previous models. Government support and contractor’s organisational culture serve as variable constructs identified as gaps in H&S compliance research. Discussions also included the integrated holistic model and the variables of the model, identification of the model and justification for the selected variables. The paper presented the hypothesised integrated holistic H&S compliance model. The gaps identified in H&S compliance research served as the variable constructs. They are government support and contractor’s organisational culture.
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Contractors management team roles for project cost control in Ghana

  • Authors: Owusu, K. , Aigbavboa, C. , Thwala, Wellington Didibhuku
  • Date: 2015
  • Subjects: Cost control , Contractor , Ghana
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/85340 , uj:19331 , Citation: Owusu, K., Aigbavboa, C. & Thwala, W.D. 2015. Contractors management team roles for project cost control in Ghana.
  • Description: Abstract: Project cost control is one of the key management practices that are crucial to the survival of every construction company in a country. The involvement, good cooperation and good coordination of the contractors' in-house management team roles are essential to achieve maximum good management practice as well as maximum profit. The objectives of the study were to identify the various roles in-house team members play for successful project cost control and to develop a model to show the interdependencies of the roles among the contractor's team for effective cost control. The study uses both quantitative and qualitative approach. The population and sample sizefor this study comprised all registered members of the Ashanti Region branch of Association of Building and Civil Contractors of Ghana (ABCCG) who wereforty-one (41) members in good standing with response rate of 90%. Likert scale from 'always to never' was used to evaluate the roles of the contractors' team. The survey indicated that the project manager is responsible for checking cost performance, timely co"ective measures and taking plan based on actual cost. The quantity surveyor also prepares detailed estimates, cash flow forecasting, financial reporting, gathers cost data by checking invoices. The store keeper/manager also does inventory control, controlling of materials, and minimizing wastage of materials at construction site. A model developed shows that project manager links up all the professionals by coordination with the contractors' management team to achieve maximum good management practice as well as maximum profit.
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Marketing construction business in Ghana : the problems, prospects and strategies

  • Authors: Yankah, J.E. , Thwala, Wellington Didibhuku , Aigbavboa, C.O. , Pretorius, J.G.
  • Date: 2015
  • Subjects: Marketing , Construction , Ghana
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/80811 , uj:18761 , Citation: Yankah, J.E. et al. 2015. Marketing construction business in Ghana : the problems, prospects and strategies.
  • Description: Abstract: Many construction enterprises still oftenfail to realize that marketing entails more than just playing withfew isolated promotional tools, such as distributing brochures, advertising, promotional videos, which they often employ without following a structured marketing plan formulated in line with the organization's aims and objectives. Such ad hoc approach to marketing in the construction industry has resulted in an uphill struggle with little to no success. This paper identifies the problems that has led to the ad hoc approach to marketing in the construction industry and examines the prospects for improving the situation. It discusses the strategies to be adopted to improve the effectiveness of implementing marketing in the management of construction business. The study adopts descriptive research design and the use of literature review as a method to identify, summarize and synthesize extant literature on construction marketing to show why the need exist for marketing in the management of construction business. The paper finds that gaps exist in existing construction marketing research knowledge in general and Ghana in particular . There is the need for scientific research which focuses on development of frameworks or models to guide the marketing of construction businesses in developing countries. Construction enterprise owners, construction marketing/management researchers, construction education curriculum developers and managers of construction business organizations will find this paper useful. Future research work must focus on developing construction industry specific frameworks or models to guide the marketing of construction businesses.
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Occupational Health and Safety challenges in the Ghanaian construction industry

  • Authors: Mustapha, Zakari , Aigbavboa, Clinton , Thwala, Wellington Didibhuku
  • Date: 2015
  • Subjects: Construction , Ghana , Performance
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/75838 , uj:18726 , Citation: Mustapha, Z., Aigbavboa, C. & Thwala, W.D. 2015. Occupational Health and Safety challenges in the Ghanaian construction industry.
  • Description: Abstract: The prevalence of Occupational Health and Safety (OHS) issues in most of the African countries have been attributed to the insufficient attention received from industry and government. The review of literature in the existing body of knowledge becomes paramount on the subject matter. The road map for the identification of occupational health and safety practices in the Ghanaian construction industry was obtained through literature review. Studies relevant to OHS practices were selected out of the numerous studies reviewed, through a rigorous process. The results from the literature study were analysed to obtain specific issues that are relevant to the OHS in the Ghanaian construction industry. Based on the identified practices, needs are clearly defined and strategies are proposed to come out with appropriate solutions for health and safety improvements in the Ghanaian construction industry. Findings from the study show that ignorance and lack of interest in dealing with OHS issues in Ghana is one of the contributing factors to the OHS challenging. It is concluded that proactive measures should be provided at all levels of organisations in the country to deal with OHS issues. There should also be the establishment of OHS culture robust enough to deal with all issues in the country. Serious attention should be given to effective OHS management in order to eliminate accident in the construction industries.
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Philosophical basis for housing development

  • Authors: Aigbavboa, Clinton , Thwala, Wellington Didibhuku
  • Date: 2015
  • Subjects: Adequate housing , Ghana , Shelter
  • Language: English
  • Type: Conference proceedings
  • Identifier: http://hdl.handle.net/10210/87950 , uj:19650 , Citation: Aigbavboa, C. & Thwala, W. 2015. Philosophical basis for housing development.
  • Description: Abstract: The need to provide adequate, suitable, and equitable housing has remained an important priority of every successive Ghanaian government. Even though housing is a fundamental necessity of life, more than half of the Ghanaian population lives in inadequate houses. Hence, the objective of this paper is to discuss the fundamental philosophy underpinning adequate housing development vision in Ghana to provide a solution to the current housing problems faced by the low-income groups. The data used in this paper were derived from secondary sources only, through a detailed review of related literature on the subject to meet the research objectives. The study is an in-depth literature exploration on the fundamental philosophy underpinning housing development vision in Ghana. Unlike housing development in other African States which has its underpinning in its Constitution, the philosophical basis for housing development in Ghana is not completely supported in the Ghanaian constitution. The foundation is found in separate Ghana Development Plans as deemed necessary by the previous and even the current government as a follow-up to their manifesto before being elected into government. For instance, the present government involvement in housing provision is as a result of the manifesto’s declaration, which states that: every Ghanaian must have a home though not necessarily own a house, as a meaningful expression of the right to shelter.
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A Delphi technique approach towards the need for and relevance of construction project monitoring and evaluation practices

  • Authors: Tengan, Callistus , Aigbavboa, Clinton
  • Date: 2017
  • Subjects: Delphi technique , Ghana , Monitoring and evaluation
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/254494 , uj:26641 , Citation: Tengan, C. & Aigbavboa, C. 2017. A Delphi technique approach towards the need for and relevance of construction project monitoring and evaluation practices.
  • Description: Abstract: The practical experience of the researchers on the implementation of the inductive methodology to knowledge dissemination using the Delphi technique approach is reported in this study. The Delphi method is a vital procedure of reaching consensus on issues that cannot be resolved in a once-off discussion. The research commenced with five questions to ascertain the views of experts with the aim of reaching consensus on the need for and relevance of monitoring and evaluation (M&E) implementation in achieving project success in Ghana’s construction industry. Experts for the study were identified from the Ghanaian construction industry (quantity surveyors, architect, and engineers), research, and academic institutions of higher learning faculties in Ghana. After two iterative Delphi rounds, consensus was achieved on the need for and relevance of M&E to achieve project success as suggested by the experts during the Delphi process. Based on the difficulties faced in the process, the study recommends clear and concise instructions to Delphi experts on the process. Also, the length of the structured Delphi questionnaire should be as short as possible to ensure a high response rate with a constant reminder to experts before the close of the submission of responses. In conclusion, the authors argue that the Delphi technique is vital for studies in areas where consensus on the need for and relevance of construction project management practices is yet to be reached.
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“But the moment they find out that you are MSM…”: a qualitative investigation of HIV prevention experiences among men who have sex with men (MSM) in Ghana’s health care system

Experiences of formal foster parents in Ghana : motivations and challenges

  • Authors: Frimpong-Manso, Kwabena , Tagoe, Ishmael , Mawutor, Stella Mawusi
  • Date: 2020
  • Subjects: Ghana , Foster care , Children
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/432050 , uj:37306 , Citation: Frimpong-Manso, K., Tagoe, I. & Mawutor, S.M. 2020. Experiences of formal foster parents in Ghana : motivations and challenges.
  • Description: Abstract: In Ghana, reform of the child welfare system is shifting the care of orphans and vulnerable children from residential care to foster care. However, the system has faced difficulties in recruiting foster parents. Therefore, this qualitative research explored the motivations and challenges of foster parents in Accra, the capital city of Ghana. Fifteen foster parents took part in semi-structured interviews that were analysed using an inductive thematic approach. The study found that participants undertook the role of fostering because of their love for children, religious and social obligations, and satisfaction of personal goals. Challenges the foster parents experienced included stigma, financial challenges, and emotional issues as a result of fostering children. The recommendations of the study which aim to help in addressing the challenges confronting foster parents include the provision of financial resources, sensitisation campaigns to reduce the stigma and creation of foster parent associations to help with the emotional issues.
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Citizenship, indigeneity, and the experiences of 1.5- and second-generation Fulani Herders in Ghana

  • Authors: Setrana, Mary B.
  • Date: 2021
  • Subjects: Ghana , Citizenship , Fulani
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/489244 , uj:44602 , Citation: Setrana, M.B. 2021. Citizenship, indigeneity, and the experiences of 1.5- and second-generation Fulani Herders in Ghana.
  • Description: Abstract: Issues of indigeneity and citizenship rights for second-generation pastoralist migrants across the West African States have received little to no attention in migration and pastoralist studies. This article explores this under-researched area in the field of migration studies and revisits the highly contested migration–citizenship nexus among Fulani herders in the Shai-Osu- Doku and Agogo traditional areas of Ghana. The article captures the crises of citizenship facing descendants of Fulani herders and families, particularly in relation to their integration into local host communities. I argue that second-generation migrants remain at the margins, spatially and socio-politically defined, of both development and society. While they do not have any ties with their ancestral “home countries,” they are also considered non-citizens and face growing hostility in the places they call home. Being a citizen is not simply a static legal position, but a status developed through routine practices, building relations, and shared experiences.
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Modelling a cost profile for road projects

  • Authors: Akinradewo, Opeoluwa , Aigbavboa, Clinton , Oke, Ayodeji , Coffie, Harrison
  • Date: 2021
  • Subjects: Cost performance , Cost profiling , Ghana
  • Language: English
  • Type: Article
  • Identifier: http://hdl.handle.net/10210/479691 , uj:43398 , Citation: Akinradewo, O. et al. 2021. Modelling a cost profile for road projects.
  • Description: Abstract: One of the vital success elements of a construction project is the accuracy of the estimation of construction cost. This study is aimed at developing a cost profile for road projects in Ghana. Pro forma was designed to retrieve historical cost data of completed road projects in Ghana. The pro forma retrieved data such as the initial budgeted cost and final construction cost of road projects, location of road projects, features of road projects, the scope of road projects (new project, renovation work, upgrade work or replacement work), type of road projects, and classification of road projects. Cost data were analyzed using descriptive analysis and probability distributions such as cumulative density functions and probability density functions. From the findings, estimates prepared for road projects in Ghana can be expected to be below the final construction cost by approximately 20% as most of the completed road projects in Ghana experience cost overrun.
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Tourism and Hospitality Research in the Peripheries: Thematic Focus and a Research Agenda from Ghana

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