Tchabal Gangdaba massif in the Cameroon Volcanic Line: a bimodal association

Petrology and geochronology of felsic volcanics in the Sabga area (Bamenda Highlands): implications for age variation along the Cameroon Volcanic Line

“…In this study we dated two units within a well-logged rock sequence in order to place the ages within a lithostratigraphic bracket. Kamgang et al (2007Kamgang et al ( , 2008Kamgang et al ( , 2010Kamgang et al ( , 2013, Wandji et al (2008), Mbowou et al (2012), Itiga et al (2013). ages presented here are also more precise, constraining the ages for the two felsic rock units in the Sabga area at ~23.0 ± 0.3 Ma. This age is interpreted as the time of crystallization of the zircons and corresponds broadly to the emplacement ages of the rhyolitic rocks.…”

“…This should further contribute to the discussion on the role of the PanAfrican continental crust in the genesis of felsic lavas and ignim brites of the CVL although this theme is beyond the scope of the current paper. Pb represent initial Pb compositions used for common Pb correction in this study Stacey and Kramers (1975) Itiga et al 2013). This implies that, during the erup tion of basaltic rocks at Mt.…”

“…Dunlop and Fitton 1979;Marzoli et al 1999Marzoli et al , 2000Ngounouno et al 2003;Aka et al 2004;Fosso et al 2005;Njilah et al 2007;Wandji et al 2008;Kamgang et al 2010Kamgang et al , 2013Mbowou et al 2012;Itiga et al 2013;Tchuimegnie Ngongang et al 2015). These works have shown that the ages along the CVL range from 69.4 ± 0.4 Ma to Present (Fig.…”

“…Ban gou (44.7 ± 1.0 Ma; Fosso et al 2005) and at Mt. Oku (31.0 ± 1.0 Ma; Njilah et al 2004 and references therein), Ngaoundere Plateau (25.00-27.54 ± 0.66 Ma; Itiga et al 2013). This suggests that there is no systematic age progression for basaltic rocks in the southern end of the CVL.…”

Spinel-Bearing Lherzolite Xenoliths from Hosséré Garba (Likok, Adamawa-Cameroon): Mineral Compositions and Geothermobarometric Implications

“…The Adamawa basement rocks consist of Paleo-Proterozoic metamorphic rocks (2.1 Ga; [10] [11]), which were intensively remobilized by the Pan-African orogenesis [12]- [14]. These rocks crossed by the deformed and metamorphosed granitoids with ages of 615 ± 27 Ma to 575 ± 27 Ma [15] are partially covered by Cenozoic basaltic and felsic [16]- [20].…”