- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
A linear belt of structural weakness extends from South-West Africa northeasterly across Northern Rhodesia to Tanganyika, Kenya, and even Somalia. In Northern Rhodesia it is called the mid-Zambezi-Luangwa rift, is 750 miles long, and leads into the Ruaha rift in Tanganyika. It is crossed by the east-west lower Zambezi rift zone in the southern part of the country and by the Nyasa rift in the Rungwe volcanic area. At both intersections carbonatite occurrences are known; they are related to the tectonics.