Geothermal Characterization of Selected Volcanic Systems in Kenya from Resistivity and Gravity
- Key words
- Magnetotelluric, 2D gravity, Resistivity structure, Kenya rift
- Conference
- World Geothermal Congress
- Year
- 2020
- Session
- Exploration
- Language
- English
- Paper number
- 11033
Full text
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Abstract
An extensive geophysical survey comprising over 400 MT and 515 gravity stations covering Korosi, Paka and Silali volcanoes in the northern Kenya are reviewed in order to construct 1D resistivity inversion models correlated with mapped geological structures in the vicinity of the volcanoes and with previous gravity studies. The resistivity pattern imaged by EM methods conducted over a geothermal reservoir from the surface down typically includes near-surface unaltered rocks ( more than 100 Ωm) underlain by low resistivity smectite-zeolite alteration (
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