Abstract: All the epicenters determined in the central part of the West African Rift Valley up to the middle of 1958 have been plotted on a map. Most of them are on the faults which border the Rift; a few are on faults which crosscut it. The eastern Virunga ‘extinct’ volcanoes show a fairly strong seismic activity. The most important discovery is that of a transverse zone stretching west from Lake Kivu to the Congo River (450 km); extinct or active volcanoes are located at the intersection of this zone with the Rift Valley. Diagrams show the amount of seismic energy liberated per year within 500 km of Lwiro. The mean value is 3.5×1020 ergs/year, which is about 0.03 per cent of that of the earth as a whole.
Publication Year: 1959
Publication Date: 1959-11-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 43
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