Petrological and geochemical data for basic (alkali basalts and hawaiites) and silicic peralkaline rocks, plus rare intermediate products (mugearites and benmoreites) from the Pleistocene Boseti volcanic complex (Main Ethiopian Rift, East Africa) are reported in this work. The basalts are slightly alkaline or transitional, have peaks at Ba and Nb in the mantle-normalized diagrams and relatively low 87Sr/86Sr (0. 7039-0. 7044). The silicic rocks (pantellerites and comendites) are rich in sanidine and anorthoclase, with mafic phases being represented by fayalite-rich olivine, opaque oxides, aenigmatite and slightly Na-rich ferroaugite (ferrohedenbergite). These rocks were generated after prolonged fractional crystallization process (up to 90-...
New K-Ar ages, major and trace element concentrations, and Sr-Nd-Pb isotope data are presented for O...
This study focuses on mafic volcanic rocks from the Bouvet triple junction, which fall into six geoc...
Volcanological and petrological evidence, 87Sr/**Sr data, the linear correlation between pairs of re...
Petrological and geochemical data are reported for basalts and silicic peralkaline rocks from the Qu...
The southern portion of the Kenya rift is characterized by voluminous eruption of mafic to felsic ma...
Basalts of the Silali volcano are of high-Fe transitional affinity and range from plagioclase-phyric...
Matrix glass and melt inclusions in phenocrysts from pantellerite lavas of the Boseti volcanic compl...
Matrix glass and melt inclusions in phenocrysts from pantellerite lavas of the Boseti volcanic compl...
The central Kenya peralkaline province comprises five young (< 1 Ma) volcanic complexes dominated by...
The central Kenya peralkaline province comprises five young (< 1 Ma) volcanic complexes dominated...
The origin of peralkaline silicic rocks is still obscure and stands perhaps as one of the last major...
The Ethiopian plateau is made up of several distinct volcanic centres of different ages and magmatic...
The Boku volcanic complex is a Quaternary center situated on the axial segment of the Main Ethiopian...
International audienceNew petrological, geochronological, and geochemical data on basalts, mugearite...
The volcanic rocks of the Afro-Arabian volcanic province chart the nature and evolution of the mantl...
New K-Ar ages, major and trace element concentrations, and Sr-Nd-Pb isotope data are presented for O...
This study focuses on mafic volcanic rocks from the Bouvet triple junction, which fall into six geoc...
Volcanological and petrological evidence, 87Sr/**Sr data, the linear correlation between pairs of re...
Petrological and geochemical data are reported for basalts and silicic peralkaline rocks from the Qu...
The southern portion of the Kenya rift is characterized by voluminous eruption of mafic to felsic ma...
Basalts of the Silali volcano are of high-Fe transitional affinity and range from plagioclase-phyric...
Matrix glass and melt inclusions in phenocrysts from pantellerite lavas of the Boseti volcanic compl...
Matrix glass and melt inclusions in phenocrysts from pantellerite lavas of the Boseti volcanic compl...
The central Kenya peralkaline province comprises five young (< 1 Ma) volcanic complexes dominated by...
The central Kenya peralkaline province comprises five young (< 1 Ma) volcanic complexes dominated...
The origin of peralkaline silicic rocks is still obscure and stands perhaps as one of the last major...
The Ethiopian plateau is made up of several distinct volcanic centres of different ages and magmatic...
The Boku volcanic complex is a Quaternary center situated on the axial segment of the Main Ethiopian...
International audienceNew petrological, geochronological, and geochemical data on basalts, mugearite...
The volcanic rocks of the Afro-Arabian volcanic province chart the nature and evolution of the mantl...
New K-Ar ages, major and trace element concentrations, and Sr-Nd-Pb isotope data are presented for O...
This study focuses on mafic volcanic rocks from the Bouvet triple junction, which fall into six geoc...
Volcanological and petrological evidence, 87Sr/**Sr data, the linear correlation between pairs of re...