Figure 1: Location of the sections and wells studied. Sections: AFS, Afansou; AKT, Askoutti; BTZ, Bou Tazoult; TAH, Tahanoute; TIN, Tinghir; TNT, Tizi N'Test; wells: TGA-2, Tagragra-2, EGA-2, El Gouna-2. Solid blue line, transect studied; dotted blue line, northern transect under study.