ABSTRACT The Dahomeyide suture zone marks continental amalgamation between the Paleoproterozoic West African Craton (WAC) and the Sahara Metacraton (SMC). This suture zone of the PanAfrican orogenic belt is encrusted by UHP/HP metamorphic rock bodies and associated ultramafic igneous plutonic rocks in SE Ghana through to Togo and Benin. The main identified rock types consist of mafic granulites (hornblende-garnet-pyroxene gneiss and pyroxenegarnet-hornblende gneiss), felsic gneiss, eclogite a...
ABSTRACT The Quaternary aquifer in the Keta basin is a source of fresh water to the over 130,000 inhabitants living along the Keta Strip. Groundwater quality is deteriorating due to pollution from mainly agriculture, sewage, septic tanks and solid waste disposal in the area. This research was undertaken to assess the intrinsic vulnerability to pollution of the aquifer. The DRASTIC methodology was applied to delineate zones vulnerable to pollution. Data was gathered on the seven DRASTIC parame...
The growing demand for potable water supply has been a major challenge in Ado-Ekiti, Southwestern Nigeria. Delivery of good quality water by the Ekiti State Water Board to individual consumers in the required quantity and under satisfactory pressure is suspect. Even in areas that are supposedly served by piped water, the supplies to homes are extra-ordinarily intermittent in flow. This inevitably undermines the confidence of consumers, resulting to complaints and possibly the use of water fro...
ABSTRACT Geological mapping and geochemical analysis of rock samples were made on pit rocks from Obuem Mining Concession found within the Birimian of Ashanti Belt of Ghana, in order to determine the nature of gold mineralisation. The study area consists of metavolcanics and metasediments with few intrusions of granitoids. Metasediments such as phyllites and schists as well as metavolcanics of andesitic and basaltic origin were sampled and analyzed for their major and trace element contents us...
ABSTRACT Subsurface samples of Mamu Formation from Ezimo 1235 and Enugu 1327 wells, located within the Anambra Basin were examined for organic geochemical characterization and biomarker content in order to determine the lithofacies association, hydrocarbon potential as well as the palaeodepositional environment. The sediments are made up of siltstone, dark coal, highly fissile shale and mudstone. Selected samples, made up of shale and coal from both wells were subjected to Rock Eval and gas c...
ABSTRACT Accra has been experiencing periodic flooding that affects properties and lives. For instance on 41h and Sib June 1994, 8 persons lost their lives and 80 million cedis worth of properties belonging to Paloma Company were destroyed due the floods that occurred at that time. The government seeing the dangers involved. commissioned institutions such as Ministry of Works and Housing, Tourism and Country Planning and City Engineers to identify such areas and adopt measures that will ...
ABSTRACT The study adopted a pragmatist approach to assess farmers‟ vulnerability and adaptation to drought in three agro-ecological-locations in Ghana. It analysed the variations in precipitation deficits by using precipitation values for 1983-2014 period. It also assessed the variation in drought vulnerability, farmers‟ adaptation and barriers to drought adaptation. The cross-sectional survey design was utilised. A random sample of 326 farmers and six purposively selected lead farmers p...
ABSTRACT Ground magnetics and electromagnetic datasets were processed to interpret the subsurface geology and structure of the southwest of Ghana within the Tarkwain and Volcanics in the central part of the Ashanti belt. The study was aimed at mapping lithology, delineating structural lineaments and their trends as well as the trend of mineralization in the study areas. The data processing steps involved enhancement filters such as reduction to the pole, analytical signal, the first horizonta...
ABSTRACT The Niger Delta is a prolific petroleum sedimentary basin in the Gulf of Guinea and is posed with a major challenge of overpressure development in many of its fields. Integrated study, utilising 3D seismic data and well logs from four wells, namely; OBL_1, OBL_2, OBL_4 and OBL_5 was carried out in the offshore Niger Delta. The study aims at evaluation of structural influences on pressure development, detection of overpressure zones and consequently examining the risk involved in dril...
Subsurfaces samples of predominantly carbonate Ewekoro Formation, obtained from the Ibese core hole, in the eastern Dahomey Basin, were examined based on petrography and geochemistry indices.
ABSTRACT: The study was undertaken to develop a Densu basin integrated hydrological model capable of describing the major hydrological processes occurring in the land phase of the hydrological cycle and computation of water balance in the Densu river basin. Inadequate information on the hydrological processes as well as the regional water balance in the basin has adversely affected the sustainable development, assessment and efficient management of the basin’s water resources. A physi...
ABSTRACT The Akwapim Fault zone is one of the two major fault zones in the southeastern part of Ghana. Its junction with the Coastal Boundary Fault happens to be epicenter for most of the earthquakes that occur in Ghana. The earliest work done in this region was by the Gold Coast Geological Survey on a regional scale in mapping the area to determine the geological structures. With most of geological deformational features being inferred, it is prudent to carry out more research to identify mo...
ABSTRACT Subsurface samples of the predominantly carbonate Ewekoro Formation, obtained from Ibese core hole within the Dahomey basin were used in this study. Investigations entail petrographic, elemental composition as well as stable isotopes (carbon and oxygen) geochemistry in order to deduce the different microfacies and depositional environment. Petrographic study reveals the presence of dolomite, biomicrite, sandy biomicrite, and biosparite facies. Preserved pore types such as; intercryst...
ABSTRACT Field studies of outcrop samples from part of Anambra basin, southeastern Nigeria, were investigated to unravel the lithofacies distribution, provenance, palaeotectonic history as well as aspects of hydrocarbon potential of the basin. The sandstone facies of the Nkporo, Owelli, Mamu and Ajali Formations are cross bedded, medium to coarse grained, poorly sorted to moderately well sorted, negatively skewed and leptokurtic to platykurtic. Textural plots and multivariate parameters indic...
ABSTRACT The Aluminium Smelting Company, located in Ikot Abasi area, lies within the dominantly clastic rocks of the Benin Formation of the eastern Niger Delta. In order to evaluate the level of environmental contamination associated with this major industrial project, concentrations of trace elements and major elements in representative samples of soil, stream sediments and water in the vicinity of the industrial complex were determined by ICP-OES (for soil and stream sediments) and Atomic A...