Research Centre for Geophysics and Volcanology;
Institute of Geological and Mining Research;
Buea;
Cameroon;
Faculty of Sciences;
University of Maroua;
Maroua;
Cameroon;
Centrer for geological and Mining Research;
Institute of Geological and Mining Research;
Garoua;
Cameroon;
Faculty of Sciences;
University of Ngaoundere;
Ngaoundere;
Cameroon;
Cameroon Volcanic Line; Adamawa Plateau; Beka Volcanic Massif; Fractional Crystallization; OIB-Type Mantle;