... of geochronology and isotope geochemistry, is that the central Sahara region is a large, coherent craton that was ‘highly remobilized’ during the Late Neoproterozoic amalgamation of Gondwana and referred to as the Saharan Metacraton. However, new data from the Guéra, Ouaddaï, and Mayo Kebbi massifs and the Lake...

...Figure 2. (a) Simplified regional geological framework map of North-Central Africa showing the boundary of the Saharan Metacraton (modified from Abdelsalam, Liegeois & Stern, 2002 ). Location of the Doba basin drill hole and Mayo Kebbi Massif shown...

... metasomatism of the Pan-African A-type Zabili syntectonic pluton (Mayo-Kebbi massif, SW Chad) Vanderhaeghe Olivier, Anne-Sylvie André-Mayer, and Van Lichtervelde Marieke 1297 Uranium mobility and deposition over 1.3 Ga in the Westmoreland area (McArthur Basin, Australia) Joséphine Gigon, Julien Mercadier...

... Schmus et al. , 2008 ; Liégeois et al. , 2013 ; Jackson and Ramsay, 1980 ; Kröner and Stern, 2004). It formed during the Pan-African orogeny as a result of the assembly of Gondwana Supercontinent during late Precambrian time (Trompette, 1997 ; Trompette, 2000). The Sinassi − Mayo Kebbi region marks...

... the Geological Map of Africa, UNESCO, 1990 ). The latter can be traced intermittently towards the southwestern part of Chad, through the Guéra massif into the Mayo Kebbi region south of N’Djaména, where the structural trends merge with those of the CAfOB ( Figure 1 ; Pinna et al., 1994 ; Toteu et al., 2001...

... magmatism in the CAOfB is evidenced by juvenile mafic and intermediate rocks forming the Mayo Kebbi massif ( Fig. 1 ) interpreted as an island arc ( Penaye et al. , 2006 ; Isseini, 2011 ) and calc-alkaline batholiths associated with exhumed, often migmatitic gneisses and metasediments formed in an Andean...

... lithospheric fracture zones ( Wilson et al., 1998 ). The Chad Basin is touched at its border by four major Precambrian massifs: the Mayo-Kebbi in the southwest, the Guéra in the south-center, the Quaddaï in the east, and the Tibesti in the north (Figure  1a and 1b ). Geochronology has been obtained...