Chronology

Journal ArticleThe boundaries of the Lower Omo Basin have been mapped by Fuchs (1939) and by Butzer (1970, 1971) in a general way. The structural features and physiography of the eastern and central part of the Lower Omo Basin are best expressed on the maps of Davidson et al. (1973). Walsh and Dodson (1969) have mapped the geology of the North Turkana District of Kenya. East of Lake Turkana the geology is summarized by Vondra and Bowen (1976), and Vondra, Burggraf and White (1978). The Ilemi Triangle in southern Sudan remains poorly known geologically, but some information is presented by Fuchs (1939), and by Arambourg (1943). More recently Baker et al. (1972) and Cerling and Powers (1977) have provided general summaries of the structural evolution of this part of East Africa