Abstract: The Banana Zone Cu-Ag Prospect is within the SW-NE trending Ghanzi-Chobe Belt (GCB), which extends from the Namibia-Botswana border in the south to Shinamba Hills in the north near the Botswana-Zambia border. The Banana Zone is also part of the Ghanzi Project owned by Khoemacau Copper Mining and situated between the Ghanzi and Maun townships, in Botswana. The Banana Zone has inferred resource of over 225.4 million metric tonnes (Mt) grading 0.64% Cu and 8.1 g/t Ag. The GCB consists...
Abstract: Parental magma composition to layered ultramafic to mafic intrusions are commonly studied using rocks occurring along their contact with the surrounding country rock. These include sills, dykes and/or rare chill margins. In comparison to the well-studied ~2.05 Ga Bushveld Complex layered intrusion, no study is available on the parental magma composition of the Molopo Farms Complex layered intrusion in southern Botswana. With a size, approximately 1/3rd of the Bushveld Complex, mafi...
Abstract: Internal erosion and development of seepage pathways is an ever present concern in earth fill dams, and are a major reason for many dam failures. Internal erosional progresses that are responsible for many dam failures are usually difficult to detect at their onset using the currently in-built monitoring systems that are installed during dam construction. Importantly, increased seepage in dams can only be observed after manifesting at the surface, at which time the integrity of the...
Abstract: The NW trending Archean Tati Greenstone Belt is located in the southwestern part of the Zimbabwe Craton, in northeastern Botswana and consists of mafic to felsic volcanic rocks and metasediments. All rocks in the TGB have undergone greenschist facies metamorphism at 2630 ± 70 – 2570 ± 70 Ma and intrusion of granitoids that comprises of granodiorite, tonalites, quartz diorite and monzonite occurred at 2.65- 2.73 Ga. The TGB is host to numerous Au deposits including from NW to...
Abstract: The Moiyabana Coalfield, located ~80 km west of Mahalapye village in the South Eastern Kalahari sub-basin, is one of the potential areas for coal mining in Botswana. This project discusses the petrographic and geochemical results of a detailed investigation carried out on a borehole core of the Moiyabana area, eastern Botswana. Geologically, the Moiyabana coal seams occur in sedimentary rocks of Permian Age and are hosted in the Karoo Supergroup sequence. All coal seams are found w...
Abstract: This study focuses on using electrical resistivity tomography (ERT) to map coal seam and associated structures found within the seams in parts of the Mmamabula Coal Field- central Botswana. The coals of this area belong to the Ecca Group’ s Mmamabula Fm and Mosomane Fm. Several major faults are reported to have affected the Karoo strata in the Mmamabula area. The northern limit of the coalfields is defined by the ENE-trending Zoetfontein Fault which has a downthrow to the no...
Abstract: The Motloutse Complex to the southwestern margin of Zimbabwe Craton is a medium-grade terrane in northeastern Botswana. Some studies consider it as part of the Limpopo Complex high-grade terrane between the Kaapvaal and Zimbabwe cratons, while others argue it as an allochthonous terrane separate to the Limpopo Complex. A number of shear zones are postulated to delineate the extents of Motloutse Complex. Except the northern margin (the Shashe shear zone), the rest of the terran...
Abstract: Expansive soils tend to be fairly high in natural fertility and their unique morphology makes them quite interesting. Soils found in Serowe, Central Botswana, commonly exhibit variable degrees of periodic shrinking and swelling which often leave visible cracks and sometimes undulating micro-topography (gilgai) on the landscape. The use of expansive soils is often constrained due to severe management problems often associated with their physico-chemical properties. Therefore, basic ...
Abstract: The focus of this thesis was on the comparison in breakage behavior of heterogeneous diorite rock obtained at two separate quarry locations in Botswana. There are many problems associated with inefficient size reduction of quarry stones. Generally, when the material is left over sized, it will fail in its downstream operation because during separation/ screening the product will not pass to lower screens and it will require a secondary crushing activity resulting in a waste of ener...
With the emphasis that the study area is a highly mineralized area with high potential for future mining projects due to large iron ore reserves, a total of 21 soil surface samples were investigated in terms of toxic heavy metals (Pb, Cr, Ni, Cu, Zn, Co, and As) using ICP-OES to determine the metal concentrations, define the geochemical baseline during pre-mining conditions, decipher metal sources and their interrelationships using multivariate statistical analysis, and evaluate the contamina...
Abstract Sand bodies deposited across normal growth faults and associated rollover anticlines are critical reservoirs for the accumulation of oil and gas. This paper addresses aspects of structures and depositional environments of some sand bodies within the Tomboy field, offshore western Niger Delta. Structural interpretation was undertaken to identify and assign faults found in the 3-D seismic volume. Time and depth structure maps in combination with well logs were used to produce for five...
Abstract Subsurface core samples obtained from Enugu 1325 and 1331 wells within the Anambra Basin were characterized by standard organic geochemical methods; Rock-eval and GC-Ms; to deduce the hydrocarbon potential, source input of the organic matter and palaeodepositional environment of the basin. The lithologies in both wells consist of coals, shales and siltstones and belong to the Mamu Formation. The Total Organic Carbon (TOC), Soluble Organic Matter (SOM) and Genetic Potential (GP) of t...
Abstract This study employs 3D Post-Stack Time-Migrated seismic data from the DN-Field, within the Coastal Swamp depobelt of the Niger Delta in predicting lithofacies and fluvial facies of OVK-1 sand bodies in the Agbada Formation, as a tool to identify new drillable prospects. A lithofacies model for OVK-1 reservoir sand body was generated after upscaling using Most Of, as the averaging method. Calibrated by fluvio-facies at the well locations, channel sands were identified in OVK1 reservoi...
Abstract The Akinbo Formation comprises a sequence of mostly dark, pale-greenish grey, laminated shale, slightly glauconitic shale, sandy shale with subordinate claystone lenses. Selected subsurface samples of the shaly facies as penetrated by Akinside 1582 well in eastern Dahomey basin, were investigated by sedimentological, mineralogical and geochemical parameters to ascertain the hydrocarbon potential and deduce the influence of variations of clay mineral indicators on the prospect. Values...
ABSTRACT Schistose rocks from Okene-Lokoja area, SW Nigeria, consist of quartz-biotite schist, quartz muscovite schist, amphibole schist, and quartz schist. Major element compositions (oxide wt. %) of the schists together with their trace element contents (Ba. Ce. Cr. La. Li, Ni, Rb, Sr, V, Y, Zn, and Zr) are presented. The schists (excluding the quartzitic variety) are enriched in SiO,,K,O, Rb and Ba but depleted in total Fe, O. Mno. TiO,, MgO, Ni and Zn compared with rocks of similar compos...