Abstract: Mafic to ultramafic rocks occurring in the Lechana area forms part of the Archean high-grade Motloutse Complex terrane in eastern Botswana. Their occurrence as inclusions (displaced fragments) within ~2.6 Ga tonalite gneiss indicates that they are older than ~2.6 Ga. The ultramafic rocks – peridotite and pyroxenite – are widespread in the mapped area as layers, with some layers rich in pyroxenite, others rich in peridotite, and a third type of layer made up of peridotite with p...
Abstract: The invasion by Striga in most cereal crop fields in Africa has posed an acute threat to food security and socioeconomic integrity. Consequently, numerous technological and research developments have been made to minimize and even control the Striga impacts on crop production. So far, efforts to control Striga have primarily focused on the manipulation of the genetics of the host crops, as well as understanding the phenological and physiological traits, along with the chemical comp...
ABSTRACT Varying climatic conditions with increased uncertainty mainly in rainfall and temperature are salient features in marginal areas globally, adversely affecting farming activities particularly in Africa. Kenya experiences variations of annual rainfall with considerable uncertainty. These variations ranging from below 500mm to above 2000mm annually, cause droughts and floods respectively, affecting farming activities and yields. This study focused on Machakos sub County, a semi arid are...
ABSTRACT Miospores and dinoflagellates recovered from sediments from the ST – 5 and ST – 6 wells, offshore Tano Basin, Western Ghana were studied in order to determine their ages, establish palynostratigraphy and determine environments of deposition. Based on First Appearance Datum (FAD) and (LAD) of marker palynomorphs, three (3) biozones were erected for miospores and dinoflagellates respectively. The characteristic taxa of each of the biozones have been discussed in detail. The three b...
ABSTRACT The Paleoproterozoic Birimian province of Ghana is made up basically of parallel and equally spaced NE-SW trending greenstone belts (with the exception of one which trends N-S), one of which is the Bole-Nangodi belt which outcrops in the northern parts of Ghana. These belts petrologically consists of metasedimentary and metavolcanic rocks, both of which are intruded by granitoids of various ages. These granitoids can broadly be grouped into four; the Cape Coast, Winneba, Dixcove and ...
ABSTRACT Data from HD-1 well, offshore Tano Basin was subjected to optical and organic geochemical analysis to reveal the palynostratigraphy, palaeoenvironments and hydrocarbon potential of the said well. Organic geochemical studies of Total Organic Carbon and Rock-Eval pyrolysis analysis as well as the microscopic investigation of the 44 slides of ditch cuttings from a depth of 3370ft – 7290ft shows four (4) types of Palynofacies associations in the HD-1 well based on the sedimentary organ...
ABSTRACT Groundwater remains the single most important source of water in Talensi district for various purposes. Notwithstanding, little research on the quality and sustainability of the resource in the district exist. Hence a comprehensive quality assessment and a quantification of groundwater resources in the shallow unconfined aquifers of the Talensi district has been conducted using conventional graphical methods, mass balance and multivariate statistical techniques coupled with steady s...
ABSTRACT Hydrogeochemical study of the origin of underground mine water at Golden Star Bogoso/ Prestea Limited (New Century Mines) was carried out to determine the geochemical processes controlling surface water, groundwater and underground mine water and to identify the source of recharge to the underground water in the mines; investigate the hydrochemical facies of groundwater in the various aquifers (gallaries), and identify the relationship between surface water and groundwater, and under...
ABSTRACT Shales from the Paleoproterozoic Birimian Supergroup in parts of the WaLawra Belt, Northwestern Ghana, were analyzed for their major and trace element contents using ICP-MS and ICP-AES with the main aim of establishing the geochemical characteristics of the shales and inferring their provenance. On the whole twenty-two (22) samples of the shale was collected for analysis. The studied shales were compared to Early Proterozoic crust (EPC) and Post Archean Australian Shales (PAAS), and ...
ABSTRACT This research was carried out to investigate the origin of salinity in the unsaturated soil zone with emphasis on chloride profile and stale isotopes in the Ekumfi Akwakrom and Ekumfi Asokwa in Mankessim Municipality of the Central Region of Ghana, which has been reported to have high saline groundwaters. A total of 159 samples were analysed, which comprises: fifty – six (56) rainwater samples, fifty – three (53) soil from the unsaturated zone, two (2) groundwaters, forty – two...