The Teltele cluster of intrusions consists mainly of trachyte with minor soda trachyte and, to the west, three plugs of phonolite.
DAVIDSON, A. 1983. The Omo River project. Reconnaissance geology and geochemistry of parts of Ilubabor, Kefa, Gemu Gofa and Sidamo, Ethiopia. Bulletin, Ethiopian Institute of Geological Surveys, 2: 1-89.