Fig 1 (c) Schematic structure of Afar depression (after
BERBERI and VARET 1977)
1-Basement 2-Continental rift
volcanism 3-Oceanic crust 4-Extension axis 5-Relative
motion along the faulting 6-Extension manifestation of
tectonics 7-Transversal tectonic structure 8-Central
volcanoes