Untitled - Orkustofnun

Bw’Obuya and Omenda25Development of conceptual model of OlkariaFIGURE 12: Geothermal model of the Olkaria system showing structures and fluid flow patterns7. CONCLUSIONS1. The results of the review indicated that the geothermal system at Olkaria has been welldescribed and modelled by use of an integrated approach that included various geophysicaltechniques, geochemistry, geology and reservoir studies. The heat sources have been mappedmore effectively by use of seismics and MT while the hydrological patterns are bestunderstood from fluid chemistry, resistivity and geological observations.2. The Olkaria geothermal system is characterized by discrete magma bodies which are orientedNW and are the main heat sources. The fluid upflow zones are mainly at intersection of faultswhile cold recharges are along NW-SE and NNE trending faults. A major hydrological barrierexists between Olkaria Hill fault and Ololbutot fault.ACKNOWLEDGEMENTSWe are grateful to Cornel Ofwona, Silas Simiyu and Martin Mwangi for having read and offeredsuggestions that improved the paper.