ABSTRACT The hydrogeological conditions of University of Ghana, Legon Campus was assessed using geophysical and numerical techniques. Data from borehole lithological logs and electrical resistivity survey was used to conceptualize the hydrogeological system of the terrain whiles using MODFLOW to generate groundwater flow simulation models under steady state conditions. The objective of the study was to conceptualize the hydrostratigraphy through geophysical techniques, develop a groundwater f...
ABSTRACT Mafi-Tsawla and surroundings geologically belongs to the internal zone of the Pan-African Dahomeyide orogenic belt, in southeastern Ghana. The geology of these internal units requires a total understanding of the structures and lithological types and their sequences. However, the structural and petrologic evolution of these internal units is unresolved, and this results in limited understanding of the geology of the terrain. The objectives of this study are to conduct a systematic fi...
ABSTRACT Neoproterozoic phyllites from the Akuapim range, a prominent part of the Togo Structural Unit forms part of the Pan-African Dahoeyide orogen exposed at the southeastern part of Ghana. The area of study exhibit three varieties of phyllites which are carbonaceous, ironstained and micaceous phyllites. These phyllites have been analyzed for their mineralogical and geochemical characteristics to infer their source -area weathering, source rock composition and tectonic setting. The mineral...
Abstract A three dimensional fault seal analysis study of the AK fault situated offshore of the West Coast of South Africa is presented. This study is aimed at informing the development plan of the Ibhubesi gas field with regards to the compartmentalization of the reservoirs, by understanding whether a key fault, the AK fault facilitates hydrocarbon migration to the Ibhubesi field reservoirs or whether it provides a seal. In order to address this research aim, a seismic interpretation of the ...
ABSTRACT Rocks and soil covering approximately 81km2 in the Ntunkumso area in the Ashanti Region of Ghana were investigated in the present study. Petrographic studies of eighteen (18) rock samples collected suggest that the rocks are predominantly biotite schist, diorite, granodiorite, and granite. The biotite schist outcrops between Ntunkumso and Boiya and is made up of biotite, quartz, feldspar, iron oxides and opaque minerals. Diorite was encountered at Abesewase and Ofoase and is mineralo...
ABSTRACT This thesis is divided into 2 parts. The first part (Chapters 1-5) concentrates on unravelling the . Precambrian geological history of the high-grade poly-metamorphic and poly-deformed basement of southernmost India, using field geology and U-Pb geochronology. Because Peninsular India occupied a central position in Gondwana, this work bears on reconstruction models of central Gondwana between circa 600 Ma and 200 :f,a. The second part of the thesis (Chapter 6) tests the use of organ...
ABSTRACT The search for more hydrocarbons in some old fields in the onshore and shelf parts of the Niger Delta Basin is gradually becoming a major avenue for increasing the nation’s reserves. Some asset teams now have new mandates to re-evaluate key hydrocarbon reservoirs in such fields for effective optimization and production. The major reason for the re-evaluation is that some of the reservoirs between the Late Eocene and Early Oligocene (34.0 Ma and 31.3 Ma) were wrongly tagged and ma...
Abstract The sedimentary facies of the investigated area of the northeastern Voltaian, with respect to the sedimentary structures, composition as well as the depositional environments, can be classified into six (6) facies. The sediments are deposited dominantly in a shallow marine environments with records of shoreface/foreshore, Aeolian and tidal environments. The sediments were deposited in the various environments by both low and high energy media. The area shows a shallowing and thickeni...
ABSTRACT Fresh groundwater resource located in the shallow semi-confined aquifer system of the White Volta River Basin of Ghana contributes significantly to the livelihood of the communities in the basin. The objectives of this study were to evaluate the spatial variations in the hydraulic parameters of the shallow aquifer system of the White Volta River Basin of Ghana, develop a 3 - dimensional groundwater flow model for the basin and assess various scenarios of groundwater development and c...
ABSTRACT According to Knorring and Kennedy (1958), scapolite occurs in rock volume proportions of 20% at the Mampong Inselberg but other areas in the Dahomeyide suture zone have scapolite in the mafic gneiss in volume proportions of about 2%.Also, the amphibolite which occurs with the mafic gneiss in the study area is said to have undergone granulite facies metamorphism to produce the mafic gneiss (Fitches, 1970). The petrographical analyses of this research showed that the mafic gneiss has s...
ABSTRACT Population growth and industrialisation have put a lot of pressure on water resources the world over. Accra is overpopulated due to influx of people from other part of the country to seek greener pastures with limited access to water supply from the Ghana Water Company Limited (GWCL) resulting in individuals supplying their own water through drilling of individual boreholes. Hydrochemical data from 39 water samples (i.e. boreholes, hand dug wells and surface water) from six communiti...
ABSTRACT The present study area is bound within the latitude of 5055” N to 6° 0’ 0” N and longitude of 7055” E to 8° 1’ 0” E in the Southern Benue Trough, within the Afikpo syncline and Abakaliki anticlinorium, in south eastern Nigeria. The shale unit underlie the bioturbated sandstone unit. Sedimentary structures were also observed in the study area, which include tabular cross stratification, beddings, herribone structures, asymmetrical ripples and trough cross beds. Asymmetri...
ABSTRACT Lithofacies and petrophysical analysis formed the basis for the diagenetic evaluation of the reservoir units in well XYZ 006, XYZ field, Onshore, Niger Delta, Nigeria. Detailed examination of cores taken from the Lithologic section in XYZ-006 well, led to the recognition of several distinctive component facies comprising of fourteen (14) facies. These was subjected to facies analysis using the Markov Chain statistical technique. The modal analysis of the studied core samples exhibit...
ABSTRACT Nearly two decades into the outbreak, the HIV/AIDS epidemic has spread throughout sub-Saharan Africa with complex spatio-temporal variability within countries Based on epidemiological evidence, several broadly distinctive HIV/AIDS prevalence patterns have been reported reflecting a variety of factors such as sophistication in surveillance systems, political attitudes, openness towards recognition, and release of AIDS information. This thesis examines the geography of clinical AIDS in...
ABSTRACT An integrated petrographic and geochemical study of the Anyaboni Formation, Kwahu Group, Voltaian Supergroup in Ghana was carried out to infer the provenance, tectonic setting, paleoweathering and paleoclimate conditions and uranium mineralisation potential of the basin. Twenty representative rock samples were collected from the Anyaboni Formation in Asesewa and its surrounding areas for petrographic and whole rock geochemical studies. The major elements were analysed by ICP-OES and ...