Crustal structure of the Maghrebides along a central Algerian transect

North Algeria (fig.1) was part of the southern Tethyan margin during the Mesozoic. Its<br>geodynamic evolution since Triassic times up to Present is summarized below. It comprises:<br>- A rifting episode during the Triassic and Liassic;<br>- A post-rift episode of thermal subsidence and Tethyan oceanic accretion from the Middle<br>Jurassic up to the Late Cretaceous;<br>- Numerous convergence and compressional episodes during the Tertiary and Quaternary.<br>According to their specific geodynamic settings as well as structural and stratigraphic<br>characteristics during their Tethyan/Alpine evolution, several structural domains have been<br>identified. They comprise from the south to the north: the Saharan Platform, the Atlas<br>system, the Tellian foredeep and the Tell-Kabylia system (Fig.1).