Field study report of the Semliki Basin Ntoroko.
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This report explains the thirteen days of field study in Semliki basin in Ntoroko district in S.W Uganda. The Semliki Basin hosts sediments that represent the Middle Miocene to recent, which are described from outcrop and well data, underlain by possible Jurassic to Early Tertiary sediments which rest unconformable on Basement, describes from seismic data. The field work was carried out in areas like Kichwamba, behind Kisegi hill at the quarry, along seasonal Kisegi River, along the Kibuku road cut, Turaco area and Sempaya hot springs. The main objective of this field study was field training on collecting and interpreting stratigraphic, petrographic, sedimentologic and structural data which are very key in hydrocarbon exploration. This report has seven chapters, with chapters one to seven having detailed information on the general introduction of the semliki basin, materials and methods used, the lithology and stratigraphy of the sediments and the basement complex, the basin and facies analysis concepts of the Semliki basin, structures observed in the basement rocks and the sediments in the basin, geophysics of the Semliki basin and discussions, conclusions and recommendations respectively. Lithostratigraphic units encountered within the study areas include; gneisses, granites, sandstones, siltstones, clays, evaporates, conglomerates and Travertine and geologic structures encountered in these units included faults, folds, joints, dikes, veins, trace fossils, mud diaper, concretions, oilstostromes, lamination and bedding. The study also included acquiring a better understanding of the stratigraphic relationship of the different rock units that are exposed on outcrop, those from the magnetic and gravity maps as well.