Overview of the Afar depression and its main magmatic segments, modified after Varet (1975) and Wolfenden et al. (2004). The white dashed line represents the Tendaho-Gob Aad discontinuity (TGD), which marks the transition from Red Sea-oriented to Main Ethiopian Rift (MER)–oriented structures. Major grabens and fault belts in the vicinity of the study area (white rectangle) are indicated: TG – Tendaho Graben; AR – Asal Rift; HG – Hanle Graben; GG – Gob Aad Graben; WFB – Wonji Fault Belt; E-WFB – East Wonji Fault Belt.