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Eastern Rift structural geology - tectonics, volcanology and geothermal

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Titill: Eastern Rift structural geology - tectonics, volcanology and geothermalEastern Rift structural geology - tectonics, volcanology and geothermal
Höfundur: KenGen ; Geothermal Development Company Ltd. ; Jarðhitaskóli Háskóla Sameinuðu þjóðanna ; United Nations University ; United Nations University, Geothermal Training Programme ; Kandie, Risper J.
URI: http://hdl.handle.net/10802/13902
Útgefandi: United Nations University
Útgáfa: 2016
Ritröð: United Nations University., UNU Geothermal Training Programme, Iceland. Short Course ; SC-23
Efnisorð: Jarðfræði; Jarðskorpuhreyfingar; Landrek; Eldvirkni; Jarðhiti; Afríka
ISSN: 1670-794x
Tungumál: Enska
Tengd vefsíðuslóð: http://os.is/gogn/unu-gtp-sc/UNU-GTP-SC-23-0207.pdf
Tegund: Tímaritsgrein
Gegnir ID: 001475247
Athugasemdir: Presented at SDG Short Course I on Exploration and Development of Geothermal Resources, organized by UNU-GTP, GDC and KenGen, at Lake Bogoria and Lake Naivasha, Kenya, Nov. 10-31, 2016.
Útdráttur: Eastern rift is a branch of the larger East African Rift (EARS), an extensive continental rift on the Earth’s surface that extends from Gulf of Eden/Red Sea in SW Asia and propagates southward through East Africa to Mozambique near Beira. As the EARS propagates southwards from Afar triangle/triple junction, it separates into two branches namely Eastern and Western Branches. The Eastern branch includes the Ethiopian and Kenya rifts that are centered on Ethiopian and Kenyan domal hotspots respectively. Rifting tectonic episode started 30Ma in the Afar region. Magmatic and volcanic activities associated with domal uplift started during Miocene. Volcanism preceded the major rift faulting events and the mechanism of rifting process has been modeled to be as a result of elevated heat flow from the upper mantle that caused a pair of thermal bulge in the central Kenya and the Afar region of north central Ethiopia. The volcanic centres within the Eastern rift have elevated heat flow and fracture networks that has made it possible for existence of low to high geothermal systems.


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