Petrography and Geochemistry of Precambrian Basement Straddling the Cameroon-Chad Border: The Toubor

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The border of Cameroon and Chad is characterized by a Precambrian basement straddling the Touboro-Ba?bokoum area;this basement is made up of gneiss, amphibolite and granitoids (granite, syenite, granodiorite). The studied rocks display high-K calk-alcalca
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