D
Dereje Ayalew
Researcher at Addis Ababa University
Publications - 69
Citations - 3538
Dereje Ayalew is an academic researcher from Addis Ababa University. The author has contributed to research in topics: Rift & Basalt. The author has an hindex of 27, co-authored 57 publications receiving 3035 citations. Previous affiliations of Dereje Ayalew include Centre national de la recherche scientifique.
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Relationships between mafic and peralkaline silicic magmatism in continental rift settings: A petrological, geochemical and isotopic study of the Gedemsa volcano, Central Ethiopian rift
TL;DR: Petrological and geochemical data are reported for basalts and silicic peralkaline rocks from the Quaternary Gedemsa volcano, northern Ethiopian rift, with the aim of discussing the petrogenesis of peralkal magmas and the significance of the Daly Gap occurring at local and regional scales as mentioned in this paper.
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Evolution of the northern Main Ethiopian rift: birth of a triple junction
TL;DR: In this paper, the authors determined the timing and kinematics of rifting in the 3rd arm, the Main Ethiopian rift (MER), near its intersection with the southern Red Sea rift.
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Flood and shield basalts from Ethiopia: Magmas from the African superswell
Bruno Kieffer,Nicholas Arndt,Henriette Lapierre,Florence Bastien,Delphine Bosch,Arnaud Pêcher,Gezahegn Yirgu,Dereje Ayalew,Dominique Weis,Dougal A. Jerram,Francine Keller,Claudine Meugniot +11 more
TL;DR: The Ethiopian plateau is made up of several distinct volcanic centres of different ages and magmatic affinities as discussed by the authors, and the three main types of magma have very different major and trace element characteristics ranging from compositions low in incompatible elements in the tholeiites [e.g. 10 ppm La at 7 wt % MgO (=La7), La/εb = 4.2], moderate in the alkali basalts (La7 = 24, La/β = 9.2), and very high in the magnesian alkaline magmas (
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The northwestern Ethiopian Plateau flood basalts: Classification and spatial distribution of magma types
Raphaël Pik,Catherine Deniel,Christian Coulon,Gezahegn Yirgu,Corine Hofmann,Dereje Ayalew,Dereje Ayalew +6 more
TL;DR: In this paper, the authors used trace element data to identify distinct geochemical groups and evaluate the role of differentiation processes in the discovery of low-Ti basalts in the Afro-Arabian CFB province.