APPENDICES TO THE REPORT: JOINT 1-D INVERSION OF TEM AND MT DATA FROM OLKARIA DOMES GEOTHERMAL AREA, KENYA

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1 GEOTHERMAL TRAINING PROGRAMME Reports 2009 Orkustofnun, Grensásvegur 9, Number 16 IS-108 Reykjavík, Iceland APPENDICES TO THE REPORT: JOINT 1-D INVERSION OF TEM AND MT DATA FROM OLKARIA DOMES GEOTHERMAL AREA, KENYA by Charles Muturia Lichoro Kenya Electricity Generating Company KenGen Olkaria Geothermal Project P.O. Box 785, Naivasha KENYA United Nations University Geothermal Training Programme Reykjavík, Iceland Published in 2009

2 Lichoro 2 Report 16, appendices These are appendices to the report Joint 1-D inversion of TEM and MT data from Olkaria Domes geothermal area, Kenya by Charles Muturia Lichoro at the UNU Geothermal Training Programme in Appendix І shows the TEM profiles from the Olkaria Domes area and Occam inversion of the resistivity data. Appendix II shows the TEM and MT resistivity data from the Olkaria Domes area and 1-D joint inversion of the MT and TEM profiles and the corresponding model curves. Appendix III contains additional iso-resistivity maps from the Olkaria Domes area to ones shown in the main report. Appendix IV, finally, shows additional resistivity cross-sections from the Olkaria Domes area and their locations.

3 Report 16, appendices 3 Lichoro APPENDIX I: TEM profiles from the Olkaria Domes area and Occam inversion of the resistivity data

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8 Lichoro 8 Report 16, appendices APPENDIX II: TEM and MT resistivity data from the Olkaria Domes area and 1-D joint inversion of the MT and TEM profiles

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37 Report 16, appendices 37 Lichoro APPENDIX III: Additional iso-resistivity maps from the Olkaria Domes area FIGURE 1: Resistivity in the Domes area at 500 m a.s.l. according to joint 1-D inversion of TEM and MT data; the blue (gray) stars show the drilled wells in Domes area while fault strucutres are shown with irregular dark lines; elevation contours are seen in the background FIGURE 2: Resistivity in the Domes area at 3000 m b.s.l.

38 Lichoro 38 Report 16, appendices FIGURE 3: Resistivity in the Domes area at 4000 m b.s.l. FIGURE 4: Resistivity in the Domes area at 8000 m b.s.l.

39 Report 16, appendices 39 Lichoro FIGURE 5: Resistivity in the Domes area at m b.s.l. APPENDIX IV: Additional resistivity cross-sections from the Olkaria Domes area FIGURE 1: Locations of resistivity cross-sections in the Olkaria Domes area (black lines); red (dark) dots show distribution of MT soundings, while the blue (gray) stars show locations of wells

40 Lichoro 40 Report 16, appendices FIGURE 2: Resistivity cross-section SWNE4; the vertical (colour) coded bars indicate alteration mineralogy from nearby wells projected on the profile FIGURE 3: Resistivity cross-section SWNE6; the vertical (colour) coded bars indicate alteration mineralogy from nearby wells projected on the profile

41 Report 16, appendices 41 Lichoro FIGURE 4: Resistivity cross-section NWSE1 FIGURE 5: Resistivity cross-section NWSE3; the vertical (colour) coded bars indicate alteration mineralogy from nearby wells projected on the profile

42 Lichoro 42 Report 16, appendices FIGURE 6: Resistivity cross-section NWSE4 FIGURE 7: Resistivity cross-section NWSE5

43 Report 16, appendices 43 Lichoro FIGURE 8: Resistivity cross-section SN05 FIGURE 9: Resistivity cross-section NWSE1

44 Lichoro 44 Report 16, appendices FIGURE 10: Resistivity cross-section SWNE1 FIGURE 11: Resistivity cross-section SWNE2

45 Report 16, appendices 45 Lichoro FIGURE 12: Resistivity cross-section SWNE3; the vertical (colour) coded bar indicates alteration mineralogy from nearby wells projected on the profile FIGURE 13: Resistivity cross-section SWNE5