Figure 2: Schematic cross section (A-B, Figure 1) showing the relationships between the Stable Zone (i.e., the West african craton and the Volta Basin, with BSG = Bombouaka Supergroup, OSG = Oti Supergroup, TSG = Tamale Supergroup) and the Pan-African Mobile Zone (BSU = Buem structural unit; ASU = Atacora or Akwapim structural unit; SZ = suture zone; KF = Kandi fault).