Surface Exploration of a Viable Geothermal Resource in Mbeya Area, SW Tanzania. Part II: Geochemistry
- Key words
- Isotope geochemistry, fluid, REE, carbon dioxide, helium, Songwe hot springs, Mbeya area, Tanzania
- Location
- Mbeya, Tanzania
- Conference
- World Geothermal Congress
- Year
- 2010
- Session
- 14. Geochemistry
- Language
- English
- Paper number
- 1455
Full text
9084KB, opens in a new tab
Abstract
In addition to the geological investigations presented in Part I (Delvaux et al., this volume), fluid and gas samples were taken for reservoir characterization and hydrological assessment of (at least two) geothermal systems in Mbeya area, SW Tanzania, i.e. the Northern Ngozi-Songwe and the Southern Kiejo-Mbaka system.
Sampled fluids included cold surface waters as well as hot springs which were analyzed for chemical and isotopic composition. Gas samples were taken from a CO2 producing well and from bubbling cold and hot springs which were also analyzed chemically and isotopically. Additionally, free gas phases were sampled using the copper tube technique for noble gas analyses.
The integrated data set of the Northern Ngozi-Songwe system including geophysical measurements (Part III: Kalberkamp et al., this volume) resulted in a conceptual model which allows siting of exploration wells for proving the predicted reservoir in the subsurface.
Copyright 2010, International Geothermal Association. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.