Emplacement and deformation of the Fomopéa pluton: Implication for the Pan-African history of Western Cameroon

Geochemistry and geochronology of the Méiganga metadiorite: implications on the timing of D2 deformational phase in Adamawa Yadé Domain in Cameroon

“…Syntectonic D2 granitoids in Tibati area, 300 km west of Méiganga, yield a U-Pb zircon age of 620 ± 30 Ma (Nzenti et al, 2006). Syn-D2 granitoids of western Cameroon were dated at 609-557 Ma (Kwékam et al, 2010;Nguiessi-Tchankam et al, 1994, 1997Talla, 1995;Tagne-Kamga, 2003). This age is close to that of the syn-D3 granites dated at 601-558 Ma in the Méiganga area (Ganwa, 2005).…”

“…Detailed petrographic and geochronologic studies exist for a few plutons in the southwestern part of the AYD (Nguiessi Tchankam et al, 1997;Tagne-Kamga et al, 1999;Tagne-Kamga, 2003;Nzolang et al, 2003;Djouka Fonkwé et al, 2007). In the Tibati area in central Cameroon, and in western Cameroon, few syn-kinematic plutons crop out in close vicinity to the Panafrican Adamawa ductile shear zone (Central Cameroon Shear Zone: CCSZ; Nzenti et al, 2006;Njanko et al, 2006Njanko et al, , 2010Kwekam et al, 2010). They are high-K calc-alkaline plutons and show geochemical similarities to other Panafrican high-K calc-alkaline syn-kinematic plutons from western Cameroon.…”

Pan-African metamorphic evolution in the southern Yaounde Group (Oubanguide Complex, Cameroon) as revealed by EMP-monazite dating and thermobarometry of garnet metapelites

“…These large NE-striking transcurrent faults are regarded as possible prolongations of the major shear zones of NE Brazil in a pre-drift Gondwana reconstruction (Castaing et al, 1994;Njonfang et al, 2008). The northern domain consists of high-grade gneisses (Tchato et al, 2009), intruded by widespread Neoproterozoic syntectonic plutonic rocks of high-K calc-alkaline affinities (Nguiessi et al, 1997;Nzenti et al, 1994Nzenti et al, , 2006Tagne Kamga et al, 1999;Nzolang et al, 2003;Djouka-Fonkwe et al, 2008;Kwékam et al, 2010;Njanko et al, 2010). The southern domain comprises Neoproterozoic lithostructural units of metasedimentary rocks, such as the Yaounde, Lom, Dja and Yokadouma Groups (Owona et al, 2003;Owona, 2008).…”

Evidence of Structural Facts Inferred from Aeromagnetic Data Analysis over the Guider-Maroua Area (Northern Cameroon)

“…Geological studies claim the NE and NW structures being resulting from two deformations processes: the senestral shear followed by dextral shear; these occurred in the Pan African domain [18] [19] [43]. In addition, some lineaments highlighted by the study affect the basement; hence they could be the extensional effect of Godé-Gormaya shear zone (GGSZ).…”