| dc.description.abstract | This report documents my field mapping experience of area E Igayaza, Isingiro district with the Department of Geology and Petroleum studies Makerere University. The mapping exercise that ran from 31st /01/2022 to 7th /02/2022 .
The main aim of the trip was to practically learn field geological mapping and field data collection techniques and procedures for students to acquire skills in geological mapping where acquisition, processing and interpretation of field data are the major steps undertaken, equipping students with skills of geologic mapping such as collecting field data, interpreting data and correctly representing it on a base map, collecting samples as well as acquiring knowledge on how to use field equipment such as GPS, geologic compass, hammers, binoculars, lenses, tape measure among others.
Different methods like lecturing, observation, consultation, taking measurements and research were used for data collection. This report therefore, comprises of a detailed geological study of area E which was my main area of study and the regional synthesis of the entire Igayaza area.
The report is comprised of a detailed geological study of area E that I mapped that is the mineralogy, metamorphism, stratigraphy, structural data and economic activities as well as the regional synthesis which covers Gayaza synclinorium and surrounding areas of Western Uganda within the Karagwe-Ankolean system.
Area E is predominated by quartzite on top of the ridges, shale on the ridge slopes and valleys, as well as a few conglomerates. On addition to these, the rest of the Gayaza synclinorium contains slates, mudstones, schists, phyllites and granites in the arena. The metamorphism of the Gayaza area is largely of low grade and the metamorphism grade increases towards the arena due to the contact metamorphism resulting from granitic intrusion.
Faulting and folding are the major tectonic events that occurred in this area and thus the common rock structures encountered are faults, joints, folds as well as bedding planes, laminations, boudins and quartz veins. There are two major fold trends in this region; the regional set generally trending North-westerly which predominates and the cross fold set trending North-easterly. The Gayaza Synclinorium is a cross fold with the axis plunging to the South-West. Weathering and erosion have also contributed greatly to the topography of this area such as the arena topography and the ridges.
The major economic activities in this area are cattle keeping, farming in the fertile valleys and quarrying on the rock outcrops and exposures. Settlements are scarce in this area and it is largely in the valleys. | en_US |
