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Volume 9, Issue 2, April 2020, Page: 52-60
Basic Petrological and Structural Analysis in the Zimbi Gold Area (East Cameroon)
Ntomb Yvan Demonstel, Centre for Geological and Mining Research, Garoua, Cameroon
Ndzie Mvondo Justin, Ore Processing Laboratory, Institute for Geological and Mining Research, Yaounde, Cameroon; Department of Earth Sciences, University of Yaoundé I, Yaoundé, Cameroon
Ndong Bidzang Francois, Ore Processing Laboratory, Institute for Geological and Mining Research, Yaounde, Cameroon
Received: Dec. 26, 2019;       Accepted: Jan. 13, 2020;       Published: Feb. 20, 2020
DOI: 10.11648/j.earth.20200902.11      View  412      Downloads  190
Abstract
The plutono-metamorphic series of the locality of Zimbi, extends over a narrow strip of 135 km2 on the eastern edge of the gold district of Baden-Colomine in East Cameroon. The work carried out in this locality is based on a cartographic approach (processing of maps and Landsat-7 ETM + images), combined with a geological and mining survey on the ground using conventional tools. On the morphostructural level, we observe NE-SW oriented penetrative lineaments. The trajectories of these are deviated or not in contact with other less dense lineaments, organized in networks of directions N-S, NE-SW, ENE-WSW, E-W, NW-SE. Parallel to the main Cameroon Center Shear (N070E), the ENE-WSW network which induces a significant reversal of foliation on contact, defines a structuring dexter shear zone accompanied by NE-SW and EW satellite shear zones with dexter kinematics and NW-SE and NS of senestrial kinematics. The lithological diversity allows the facies of calc-alkaline granite to predominate. Zimbi's range of structural elements highlights a magmatic fluidity substituted in foliation. The foliation directed NE-SW, of dip (40-90 °) either towards the NW, or towards the SE; carries a linearization of stretch subméridienne. The folding that affects it is induced by two directions of compression perpendicular N-S to NE-SW and E-W to NW-SE, which define the voltage slots favorable to mineral concentrations by circulation of mineralizing fluids. The shear zones and the quartz-feldspathic veins, structures favorable to mineralization such as gold, secondarily affect this complex. These geomorphological, lithological and structural geology data make the plutono-metamorphic procession of Zimbi a privileged area for mining research, in the gold district of Baden-Colomine.
Keywords
Plutono-metamorphic, Zimbi Area, Morpho-structural, Gold Mineralization
To cite this article
Ntomb Yvan Demonstel, Ndzie Mvondo Justin, Ndong Bidzang Francois, Basic Petrological and Structural Analysis in the Zimbi Gold Area (East Cameroon), Earth Sciences. Vol. 9, No. 2, 2020, pp. 52-60. doi: 10.11648/j.earth.20200902.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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