No abstract

Abstrac tThe old "zone limits" (Ri, Ra, R2, R3) , established by the Petroleum Companies which worked in the Algerian Sahara in the "sixties " ( These three surfaces show together, fust above them, an increase of valces of major and trace elements and a sudden disappearance of several types of zircons .These results allow us to establish more detailed long distante correlations and help to predict new potential reservoirs in this platform .Please Hole that this abstract has been re typ ed. ERGE eanrrot b e h eld resporrsióle for any typing errors that may occur.