Mapping of Hydrothermal Minerals Related to Geothermal Activities Using Remote Sensing and GIS: Case Study of Paka Volcano in Kenyan Rift Valley
- 1 Department of Geology, University of Nairobi, Nairobi, Kenya
- 2 Geothermal Development Company, Nairobi, Kenya
- 3 Geothermal Development Company, Nairobi, Kenya
- 4 Department of Geology, University of Nairobi, Nairobi, Kenya
- 5 Department of Geology, University of Nairobi, Nairobi, Kenya
Abstract
Remote sensing investigations combined with Geographical investigation systems (GIS) provide a rapid and cost-effective method for prospecting hydrothermal and geothermal systems. Most geothermal systems in Kenya are found in remote areas where accessibility is difficult. This study was carried out on Paka volcano which is located in the Kenyan rift valley. The aim of the study was to use remote sensing and GIS to investigate hydrothermal minerals and structures associated with geothermal activities. The study involves use of Landsat TM image classification using ENVI 5.1 and ArcGIS. Lineament extraction was done using PCI geomatics 2015 while Rose diagrams were generated using Rockworks 16. The research has shown that lithological, hydrothermal mineralization and structural maps can be generated form Landsat TM images using remote sensing and GIS. It has been shown that faults trend in the Northeast, North and Northwest direction. Hydrothermal minerals that are rich in iron and clays occur on Paka volcano mountain and its neighbouring areas.
- Omenda, P.A. (1994) Geological Control on the Reservoir Characteristics of Olkaria West Geothermal Field, Kenya. Proceedings of the 19th Workshop on Geothermal Reservoir Engineering, Stanford, 18-20 January 1994, 125-129.
- Waswa, A.K, Nyamai, C.M, Mathu, M,M and Ichang’i, D.W (2015) Intergration of Geological Mapping and Remote Sensed Studies for the Discovery of Iron Ore Mineralization in Mutomo-Ikutha Area, SE Kenya. Universal Journal of Geosciences, 3, 39-50. https://doi.org/10.13189/ujg.2015.030201
- Ochieng, L. (2013) Overview of Geothermal Surface Exploration Methods. Geothermal Development Company, Nakuru Kenya.
- Calvin, W.M., Coolbaugh, M., Kratt, C., and Vaughan, R.G. (2005) Application of Remote Sensing Technology to Geothermal Exploration. In Rhoden, H.N., Steininger, R.C., and Vikre, P.G., Eds., Geological Society of Nevada Symposium 2005: Window to the World, Reno, Nevada, 1083-1089.
- Harvey, C.C., Gunderson, R., and Cumming, W (2000) Methylene Blue Adsorption: a Real Time Rig Geologist Tool for Estimating Geothermal Reservoir Temperatures and Forecasting Drillhole Stability Problems. Proceedings of the New Zealand Geothermal Workshop, Auckland, November 2000, 151-155.
- Ghazban, F. (2004) Alteration and Geochemistry of Mount Taftan Geothermal Prospect South eastern Iran. Iranian International Journal of Science, 5, 43-62.
- Wamalwa, R.N., Waswa, A.K., Nyamai, C.N., Mulwa, J. and Ambusso, W.J. (2016) Evaluation of the Factors Controlling Concentration of Non-Condensable Gases and Their Possible Impact on the Performance of Geothermal Systems: Case Study of Olkaria Wells in the Kenyan Rift Valley. International Journal of Geosciences, 7, 257-279. https://doi.org/10.4236/ijg.2016.73021
- Dunkley, P.N., Smith, M, Allen, D.J. and Darling, W.G. (1993) The Geothermal Activity and Geology of the Northern Sector of the Kenya Rift Valley. British Geological survey Research Report SC/93/1.
- Sabins, F.F., (1997) Remote Sensing—Principles and Interpretation. 3rd Edition, W.H. Freeman, New York, NY.