@article{jgg2014224,
author={{L., Ndema Mbongue J. and T., Ngnotue and D., Ngo Nlend C. and P., Nzenti J. and E., Cheo Suh},
title={Origin and Evolution of the Formation of the  Nyong Series in the Western Border of the  Craton},
journal={Journal of Geosciences and Geomatics},
volume={2},
number={2},
pages={62--75},
year={2014},
url={http://pubs.sciepub.com/jgg/2/2/4},
abstract={The Nyong series at Ed¨Ļa and Eseka area is located in the western edge of the Congo Craton and comprise three distinguish rock units namely: metasedimentary rocks unit (schists, garnet-rich micaschist); meta-igneous rocks unit (pyroxene-rich gneiss, garnet-rich charnockitic gneiss, charnockitic gneiss, biotite-rich gneiss, amphibole and biotite-rich gneiss, garnet and amphibole-rich gneiss, amphibolite, pyribolite, pyrigarnite, garnet-rich amphibolite) and a unit of the rocks resulting from the melt (migmatite, TTG) displaying quartzo-feldspathic segregation arising from either in situ partial melting or injection along dykes or ductile shear zones. The meta-igneous rocks derived from (i) intermediate to basic tholeiitic rocks with high TiO<SUB>2</SUB> (0.6-3.47%) contents compatible with the extensive orogenic domain and (ii) calc-alkaline protolith display high FeO*/MgO (1.5-3.31) ratios which is in accordance with the typical domain of collisional orogeny. The chemical patterns of metasedimentary rocks are those of shale. The average Nb/Y (0.004) ratio and the fractioned REE patterns suggest that the contribution of alkaline vulcanite and a continental environment can be envisaged for these metasedimentary rocks.},
doi={10.12691/jgg-2-2-4}
publisher={Science and Education Publishing}
}