Geochemistry, Petrogenesis and Tectonic Signification of the I-Type Granitoids in Ladde-Gore (Northern Domain, North Cameroon)

International Journal of Geoinformatics and Geological Science

© 2025 by SSRG - IJGGS Journal

Volume 12 Issue 3

Year of Publication : 2025

Authors : Amadou Diguim Kepnamou, Yaya Fodoué, Mahamat Abakar, Wassouo Wadjou Jacques

10.14445/23939206/IJGGS-V12I3P101

How to Cite?

Amadou Diguim Kepnamou, Yaya Fodoué, Mahamat Abakar, Wassouo Wadjou Jacques, "Geochemistry, Petrogenesis and Tectonic Signification of the I-Type Granitoids in Ladde-Gore (Northern Domain, North Cameroon)," SSRG International Journal of Geoinformatics and Geological Science, vol. 12,  no. 3, pp. 1-15, 2025. Crossref, https://doi.org/10.14445/23939206/IJGGS-V12I3P101

Abstract:

The Ladde-Gore region is located in the northern domain of the Pan-African chain in Cameroon. The present work deals with the petrography and geochemistry of the granitoids of the Ladde-Gore region. The granitoids in the study area consist of amphibole granite, amphibole-biotite granite, amphibole-biotite-muscovite granite, and granodiorite. These rocks have a grainy texture with a primary paragenesis of Amp+Bt+Pl+Ort+Mic+Qz+Ap+Zr and a secondary paragenesis of Ep+Chl+Op. The Ladde-Gore granitoids are magnesian to slightly ferriferous, shoshonitic to calco-alkaline hyper potassic, metaluminous, and belong to type I granitoids. Rare Earth profiles (REE) show a negative Eu anomaly for the granodiorite and no Eu anomaly for the granites. Multi-element spectra show positive or negative Ba anomalies for some samples and negative Nb-Ta, Sr, Zr, and Ti anomalies. The process behind the formation of these rocks is fractional crystallization. These rocks were emplaced in a VAG subduction environment (volcanic arc granitoids).

Keywords:

Petrography, geochemistry, Ladde-Gore, Northern domain, Central Panafrican Fold Belt.

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