This is a small area of Mablas peralkaline rhyolites located near the south coast of the Gulf of Tadjoura (Varet, 1978). The Mablas rhyolites are described under the North Tadjoura area (No. 2).
VARET, J. 1978. Geology of Central and Southern Afar (Ethiopia and Djibouti Republic). Editions du Centre National de la Recherche Scientifique, Paris. (Explanation accompanying Geological map of central and southern Afar. 1:500,000).