The Potential Relationship of Some Geothermal Field in Uganda

Abstract

Detailed geological work has been concentrated on three main geothermal areas of south western Uganda that is Katwe-Kikorongo, Buranga and Kibiro Hot springs. This included geochemical exploration, isotope hydrology, geological mapping and geophysics. Resistivity located an anomaly in Katwe and Kibiro thought to be a geothermal reservoir. However, drilling to the depth gave no sign of ge previously drilling targeted areas and probing deeper. Under this project, study has been made to correlate different geothermal hot springs with the aim of grouping them into geothermal fields. The character fluids were studied using Cl-SO4- version, isotopes, ratio of conservative elements and mixing models. Cl Amoropii, Okumu, and Kibiro as chloride waters, Kitagata and Kanangorok, as steam heated waters, Kibenge, Kabuga and Rwagimba as Volcanic waters, Amuru as bicarbonate waters while Amuru (Pakele) and Avuka as peripheral waters. The geothermal fluids come from old base rock rat partially or fully equilibrated. The Kibenge, Rwagimba and Kabuga are correlated to Buranga with fluids of similar origin while Kibiro a appear to be linked, with Avuka at the peripheral of Kibiro show that there was no boiling in the studied hot springs but with some evidences of mixing. The log Q temperature plots of minerals shows Kanangorok, Kabuga, Kibenge, Rwagimba, and Okumu are saturated with calcite and could be prone to scaling if utilised.