Evolution of the Danakil Depression (Afar, Ethiopia) in Light of Radiometric Age Determinations

  title={Evolution of the Danakil Depression (Afar, Ethiopia) in Light of Radiometric Age Determinations},
  author={Franco Barberi and S. Borsi and Giorgio Ferrara and G. Marinelli and Roberto Santacroce and Haroun Tazieff and Jacques Varet},
  journal={The Journal of Geology},
  pages={720 - 729}
Fourteen new K/Ar and fission-track ages obtained on volcanic rocks from the Danakil depression are presented. Together with previous data, they allow a preliminary reconstruction of the volcanic evolution of the northern Afar (Danakil) rift. Independent age determinations indicate that the Danakil rift began to form in the lower Miocene (23-25 m.y. B.P.). Since then and up to the present day, volcanism has been almost continuous producing rock associations of contrasting origin according to… Expand
Evolution of the Danakil Depression (Afar, Ethiopia) in Light of Radiometric Age Determinations: A Discussion
  • P. Mohr
  • Geology
  • The Journal of Geology
  • 1973
It has long been obvious that a revision to Blandford's (1870) stratigraphic classification of the Ethiopian volcanic rocks is necessary. Nevertheless, most geologists working in Ethiopia have judgedExpand
Structural Meaning of East-Central Afar Volcanism (Ethiopia, T.F.A.I.)
The volcanic units outcropping in southeastern central Afar include a sequence of thick, stratoid lava flows with interbedded acidic rocks, ranging in age from 25 to 1 m.y. This sequence is overlainExpand
New age constraints on the timing of volcanism in central Afar, in the presence of propagating rifts
[1] We investigate the relationship between rift propagation and volcanism in the Afar Depression in the last 4 Myr. Potassium-argon and thermoluminescence dating allow detailed reconstruction of theExpand
Origin and Evolution of the Halo-Volcanic Complex of Dallol: Proto-Volcanism in Northern Afar (Ethiopia)
Contextual early observations on volcano genesis are valuable but scarce. Resembling a shield volcano, the Dallol dome is a complex 40 m-high geological structure on the Danakil depression, aExpand
Geologic and geochronologic constraints on the evolution of the Red Sea-Gulf of Aden and Afar depression
Abstract New KAr age determinations show that the development of Southern Afar since 14 Ma ago involved five stages of tectonism and volcanism at 14-11, 11-10, 9-7, 5-4 and post-1.6 Ma ago; whileExpand
Silicic central volcanoes as precursors to rift propagation: the Afar case
Abstract The Afar depression is a triple junction characterised by thinned continental crust, where three rift systems meet (Red Sea, Gulf of Aden and East African Rift). About 100 recent K–Ar agesExpand
Volcanism in the Afar depression: Its tectonic and magmatic significance
Abstract Three main types of volcanism, viz. oceanic, continental and stratoid, reflect the tectonic evolution of Afar. Stratoid volcanism (flood basalts and ignimbrites) is believed to be an earlyExpand
The Manda-Inakir Geothermal Prospect Area, Djibouti Republic
The northern half of Djibouti Republic is made of volcanic formations of late Miocene age, with the extensive and deeply faulted Mabla Rhyolites (12 to 8 My) partly covered (western side) by theExpand
In early Miocene time (ca. 2. Ma ago), dike swarms, layered gabbros, granophyres, and basalts of the Tihama Asir ophiolite in S.W. Saudi Arabia were emplaced during the initial stages of Red SeaExpand
Age of the lower flood basalts of the Ethiopian plateau
VARIOUS stages of continental fracturing and crustal separation are displayed in Ethiopia at present. Separation of the African and Arabian plates has taken place along the Red Sea and Gulf of AdenExpand


Ethiopian rift and plateaus: Some volcanic petrochemical differences
Volcanism on the Arabo-Ethiopian swell has accompanied the development of the three traversing spreading zones conjoining at Afar: the Red Sea, Gulf of Aden, and African rift systems. The Red Sea andExpand
Tectonic Significance of the Afar (or Danakil) Depression
The Afar depression results from the separation of the Arabian and Nubian plates, with generation of new oceanic crust. Volcano-tectonic spreading axes form part of broad uplifted structures. TheExpand
Tectonic Significance of Regional Geology and Evaporite Lithofacies in Northeastern Ethiopia
Mesozoic and Precambrian rocks are exposed in the Danakil Alps of coastal Eritrea, but the Danakil Depression between the Alps and the Ethiopian plateau is covered by Tertiary-Quaternary rocks. TheExpand
Geologic History of Red Sea Area
The Red Sea depression has been considered by previous workers to be (1) a graben, with downdropped center block, resulting from compressive forces, or (2) a paar, or depression caused by the movingExpand
Les Diatomées des Sédiments Holocènes du Bassin du Lac Afrera (Giulietti) (Afar Septentrional, Ethiopie). Essai de Reconstitution de l'Évolution du Milieu
The calcareous holocene sediments found in the outlying areas around Lake Afrera (Ethiopia) contain diatoms in abundance, some of which seem to be new species. Qualitative and quantitative studies,Expand
Géologie de l’Afar Septentrional
RésuméTectonique — Du 15° au 13° parallele, l’apex septentrional de l’Afar est conditionné par des fissures de tension ouvertes et des failles normales de direction NNW. Un graben à fosse centraleExpand
Sur la decouverte en Afar (Ethiopie) d'un granite
  • hyperalcaline: le massif de Limmo: Acad. sci. (Paris) Comptes rendus,
  • 1972
Sur la decouverte en Afar (Ethiopie) d'un granite hyperalcaline: le massif de Limmo: Acad. sci. (Paris) Comptes rendus
  • 1972
Age of the Ethiopian flood basalts: Nature, v. 234
  • 1971