Tectonic transtension of Tunisian palaeo-margin during Aptian-Campanian

Structural study carried out in southern mid Tunisian Atlas and other regio ns of Tunisia lead to suggest a structural pattern of horts, grabens and ti lted blocs for the Tunisian palaeo-margin during the Cretaceous period. The se tectonic structures are generated by different regimes. Then, during the Aptian and Albian period, the regime: is left strike slipping, indicated b y E-W sinistral strike slip faults and NE-SW normal faults. During the Turo nian-Campanian period. it is right transtensif with ENE-WSW extension, char acterized by N120 dextral strike slip faults and N160 normal faults. Thr ki nematics are in accordance with the sinistral relative plate movement betwe en Africa and Eurasia during Aptian-Albian and anti-clockwise movement of A pulia during Turonian-Campanian period.