%0 Journal Article
%T Geochemistry of Magmatic Rocks of the Syama Belt, Southern Mali, West African Craton
%A Dasso Yollande Traor¨¦
%A Seko Sanogo
%A Adama Youssouf Kon¨¦
%A Isma£¿la N¡¯Diaye
%A Mamadou Lamine Bouar¨¦
%A Didier B¨¦ziat
%J Open Journal of Geology
%P 250-272
%@ 2161-7589
%D 2022
%I Scientific Research Publishing
%R 10.4236/ojg.2022.123014
%X Within southern Mali, the Syama belt constitutes a linear major structure-oriented N-S, which host several gold deposits (e.g., Syama and Tabakoroni) and prospect areas (e.g. Tellem). The Syama Belt is formed by magmatic rocks (basalts, lamprophyres, andesites, dacites and microgranites); sedimentary rocks (shales) and volcano-sedimentary rocks (pyroclastics). The magmatic rocks are divided into two main volcanic series: tholeiitic affinity rocks (basalts and lamprophyres) and calc-alkaline affinity (andesites) that are the most evolved. The field relationships between rocks of these two series suggest that the calc-alkaline series are younger the tholeiitic series. These tholeiitic series present the Mid-Ocean Ridge Basalt (MORB) affinity whereas the calc-alkaline series would be linked to an island arc-type. This coexistence is not an isolated case within the West African Craton (WAC). Otherwise, the Syama belt has all the characteristics of other belts, within which a number of gold deposits are developed, in the WAC.
%K Syama Belt
%K Magmatic Rocks
%K MORB
%K Boual&#233
%K -Mossi Domain
%K Southern Mali
%K West African Craton (WAC)
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=116042