IOSR-JAGG   Volume-5 ~ Issue-5 ~ SEP-OCT-2017

Abstract: The analysis of aeromagnetic data over Middle Benue Trough and its adjourning basement terrain using Source Parameter Imaging (SPI) in Oasis montaj version 8.2 indicates that, the depth to magnetic sources in adjourning basement varies between 0.2 km to1.7 km. The depth to magnetic source at the middle of the study area which made up of the Cretaceous sediments of middle Benue varies between 4 km to 6 km. The shallow depth at the adjourningbasement could be as a result of basic intrusive rocks of the basement terrain, while the deeper sources at the middle of the study area that made upof cretaceous sediments of middle Benue, could be due to rifting of the Benue Trough. From the results obtained the adjourning basement terrain could be a potential site for mineral exploration while, the sedimentary section belonging to the middle Benue Trough could be a potential site for petroleum exploration.

Keywords: Oasis Montaj, basement terrain, Source Parameter Imaging, Middle Benue and Magnetic source

Abstract: The mesoproterozoic Kibara belt in central Africa has the subdivision of the two mobile belts which are the Karagwe -Ankole belt (KAB) and the Kibara belt (KIB), separated by Rusizian terrane. The KAB, which spans Rwanda, Burundi, Southwestern Uganda and Northwestern Tanzania, and the KIB together host a large metallogenic province that is composed of numerous rare -metal ore deposits mineralised in niobium-tantalum(Nb-Ta), tin(Sn) and tungsten(W).The part of the Karagwe-Ankole Belt located in Rwanda contains the bulk of cassiterite, columbite-tantalite, and wolframite. These ore minerals have been termed 3Ts and occur in Nb-Ta-Sn pegmatites, W-Sn hydrothermal quartz vein deposits and Sn greisens, which are components of one composite metallogenic system related to the............

Keywords: Karagwe-Ankole belt, Kibara belt, Cassiterite, Columbite-Tantalite, Wolframite, Rwanda

Abstract: The Muglad rift basin of interior Sudan is an integral part of the West and Central African Rift System (WCARS). It has undergone a polyphase development which has resulted in three major phases of extension with intervening periods when uplift and erosion or non-deposition have taken place. The depositional environment is nonmarine ranging from fluvial to lacustrine. The basin has probably undergone periods of transtensional deformation indicated by the rhomb fault geometry. Changes in plate motions have been recorded in great detail by the stratigraphy and fault geometries within the basin and the contiguous basins. The rift basin has commercial reserve of petroleum, with both Cretaceous and Tertiary petroleum systems active. The major exploration risk is the lateral seal and locally the effect of the tectonic rejuvenation as well as tectonic inversion. In some oilfields, the volcanic rocks constitute a major challenge to seismic imaging and interpretation.