@article{jgg2018622,
author={{Nicaise, Saha Fouotsa Alliance and Rigobert, Tchameni and Emmanuel, Nomo Negue and Dawa?, Daouda and Joseph, Penaye and Martial, Fosso Tchunte Periclex},
title={Polyphase deformation in the Mb¨¦ - Sassa-Bersi area: Implications on the tectono-magmatic history of the area and the tectonic evolution of the Tchollir¨¦-Banyo and Central Cameroon Shear Zones (Central North Cameroon)},
journal={Journal of Geosciences and Geomatics},
volume={6},
number={2},
pages={41--54},
year={2018},
url={http://pubs.sciepub.com/jgg/6/2/2},
issn={2373-6704},
abstract={Field petrographic and structural data of the Mb¨¦-Sassa-Bersi area exposed two main group of rock (metamorphics and plutonics) which were affected by polyphase deformation. The structural evolution is marked by four deformation phases called D<SUB>1</SUB>, D<SUB>2</SUB>, D<SUB>3</SUB> and D<SUB>4</SUB>. The geometrical arrangement of D<SUB>1 </SUB>structures (flat-lying foliation, horizontal lineation, recumbent folds and overlapping) allow to linked this deformation phase to tectonic nappe verging toward SSE. The second deformation stage (D<SUB>2</SUB>) corresponds to simple shear dominated transpression and characterized by the evolution of the Tchollir¨¦-Banyo shear zone (TBSZ) that showing sinistral movement. The third deformation phase (D<SUB>3</SUB>), is marked by strain partitioning induced by transpression and links to the evolution of the Central Cameroon shear zone (CCSZ) that displays dextral motion. D<SUB>1</SUB>, D<SUB>2</SUB> and D<SUB>3</SUB> are associated to migmatization, development and emplacement of granitic magmatism. During D<SUB>2</SUB> and D<SUB>3</SUB>, the magmatic rocks are emplaced under the control of the two main crustal shear zones (TBSZ and CCSZ). D<SUB>4</SUB> deformation is responsible for the development of faults, fracture and joints and corresponds to brittle tectonic. The main NW-SE direction of faults and fractures suggest that D<SUB>4</SUB> stage shows traces of the Benue trough. On the whole, Nappe tectonic, followed by transpressive tectonic are the main tectonic type developed during the Pan-African Orogeny in Central North Cameroon.},
doi={10.12691/jgg-6-2-2}
publisher={Science and Education Publishing}
}