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Nzenti, J.P., Barbey, P., Macaudière, J., Soba, D., 1988. Origin and evolution of late Precambrian high-grade Yaounde gneisses. Precambrian Research 38, 91-109.

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Article

Petrographic and Structural Assessment of the Gounbela Area (Meiganga, Cameroon): An Approach for the Comprehension of the Geodynamic Context of the Adamawa-Yadé Emplacement

1Centre for Geological and Mining Research, P.O Box 333, Garoua, Cameroon, (Institue of Geological and Mining Research, Cameroon)

2Department of Earth Sciences, University of Ngaoundere, P.O Box 454 Ngaoundere, Cameroon

3Departement of Earth Sciences, University of Yaounde I, P.O Box 812 Yaounde, Cameroon;

4School of Geology and Mining of Meiganga (EGEM), University of Ngaoundere, Cameroon

5Research Centrer for Geophysics and Volcanology, P.O Box 370 Buea, (Institue of Geological and Mining Research, Cameroon)

6Mineral processing laboratory, Institue of Geological and Mining Research, 4110 Nlongkak Yaounde Cameroon

7Laboratory of Environmental Geology, University of Dschang P.O Box 67, Dschang Cameroon


Journal of Geosciences and Geomatics. 2022, Vol. 10 No. 2, 81-88
DOI: 10.12691/jgg-10-2-2
Copyright © 2022 Science and Education Publishing

Cite this paper:
Mana Bouba Christian, Ismaïla Ahmadou, Ipan Antoinette Solange, Issac Bertrand Gbambie Mbowou, Yingyang Wanbitching Raoul, Sep Nlonngan Jean Paul, Dili-Rake Jacques, Bomolomo Michel Vanessa, Safianou Ousmanou, Bello Bienvenue. Petrographic and Structural Assessment of the Gounbela Area (Meiganga, Cameroon): An Approach for the Comprehension of the Geodynamic Context of the Adamawa-Yadé Emplacement. Journal of Geosciences and Geomatics. 2022; 10(2):81-88. doi: 10.12691/jgg-10-2-2.

Correspondence to: Mana  Bouba Christian, Centre for Geological and Mining Research, P.O Box 333, Garoua, Cameroon, (Institue of Geological and Mining Research, Cameroon). Email: manaboubachristian@yahoo.com

Abstract

A petrographic and a structural study of the Gounbela region (Adamawa-Yadé) basement have been made. This included a macroscopic and a microscopic approach. The lithology is made up of biotite-amphibole gneisses and amphibolites (belonging to the amphibolite facies); of biotite-muscovite and pink granites with a porphiryc granular texture showing a syn-to late tectonic character of rocks. The Gounbela tectonic present four deformational phases; D1, D2, D3, D4. D1 is materialized by the S1 foliation; D2 is marked by the S2 schistosity resulting from the tranposition of S1 foliation. D3 is charasterized by F3 folds and C3 shear planes. The D4 deformational phase is made up of veins and faults. The major faults directions N130-N140 are similar to those belonging to the Lamé cretaceous Serie in Tchad, suggesting that they may have been occurred during the Atlantic opening.

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