| dc.description.abstract | This geologic field report presents a comprehensive study of the geology of Igayaza-Isingiro done during a mapping exercise and field excursion to Southwestern Uganda from the 31stJanuary, 2022 to the 7thFebruary, 2022. The fieldwork encompasses detailed geological mapping of Igayaza, Isingiro District which lies in the Karagwe-Ankolean system (1400-950 Ma); the northernmost extension of the Kibaran mobile belt. The major aim of the project was to equip students with skills in geologic mapping and build their understanding of the geology of Karagwe-Ankolean system.
The report begins with an overview of the study area, geological setting, and relevant literature review. Detailed geological mapping was conducted by nine groups of nine students to identify and delineate various rock formations, lithologies , and structural features. Field measurements,including strike and dips of structures such as beds, joints, faults and folds, were taken and used to determine the orientation of the structures, which helped shed light on the tectonic history and stress regimes that shaped the study area.
Field observations and measurements were supplemented by laboratory analyses,including petrographic studies,todeterminethemineralcompositionoftherocksencountered.Furthermore,based on the laboratory work,there port discusses the regional geological evolution, key geological events and processes that influenced the current geological framework.Italsoexaminesthepotentialimplicationsoftheobservedgeologicalfeaturesfornaturalresource.
The lithology comprised of thin arenaceous formations predominated by quartzites while the thick argillaceous formations constituted shales. Quartzites mainly occupied the ridge summits while the shales occupied the flanks of ridges and in valleys between ridges. The grades of metamorphism varies from low grade regional metamorphism as evidence DB you presence of beddings and some index minerals such as chlorite, muscovite. Sandstones and shales were metamorphosed to quartzites and phyllites respectively. Contact metamorphism occurred around granitic intrusions that formed most of the arenas (broad stadium like structures).
Structures in the Area Include Joints, beddings, Faults, quartz veins; these were mapped at different scales. The economic potential of the area is low since no economic minerals have been discovered. However, some of the economic activities carried out include; farming, cattle keeping, quarrying and brick making. | en_US |
