Dabbahu rift segment with Dabbahu volcano in distance

Looking north along the Dabbahu rift segment towards the Dabbahu volcano. Photograph by Elizabeth Baker, Royal Holloway, University of London.

Geology of the Northern Afar Rift

The Northern Afar region (also known as the Danakil Depression) is bound to the west by the Ethiopian Plateau and to the east by the Danakil Block. It is a low lying area dropping in elevation from around 200m in the north to 120m below sea level in its centre. The northwest-southeast trending Axial Volcanic Ranges of the Erta Ale, Tat Ale and Alyata volcanic shield complexes dominate the geology (e.g. Beyene & Abdelsalam, 2005).

To the north of the Northern Afar Rift the southern Red Sea spreading ridge splits into southeast and a SSW trending branches. The southeast trending rift dies out while the SSW trend continues through the Gulf of Zula into the Northern Afar Rift. It continues south along the Erta Ale range and then splits again running southeast into the Tat Ale-Dadar range and southwest into the Alyata-Manda Hararo and Dabbahu ranges (Barberi & Varet, 1975, Chu & Gordon, 1998, Beyene & Abdelsalam, 2005).

Close up of normal faults

Close up showing the geometry of the normal faults and transfer zones. Photograph by Elizabeth Baker, Royal Holloway, University of London.

For references used, please see technical version.