Abstract: Upper Cretaceous-Eocene aged sedimentary sequence of South-Eastern AnatoMa unconformably starts with Antak (Terbüzek) Formation of red beds of various types on the deep-marinemudstones of Kastei Formation around Adıyaman, It continues by a thin beach elastics and later bycarbonates of Besni Formation of Maestrichtian age, The upper part of the sequence is composed ofopen and deep-marine calciturbidite and calcareous mudstone alternation (Germav Formation) of Paleocene-Eocene period. This unit is the most widely exposed lithologie association observed in the investigated area and continued to be deposited in a more and more deepening basinal conditions, untilthe end of Lutetian. Within this period, deposition by various density currents is dominant along thesubmarine channels in the deepmarine environments»The sequence is overiained by the Miocene aged Fırat Formation which is generally composed of B*mestones.Biostraügraphically; in Kastei Formation, Globotruncana gtuartiformig and Glöbûtnıneana gansserl; in Besni Formation Omphalocyclus macroporiis - Orbitoides médius and m Germav Formation« GIoborotalia pseudobuiloides, Globorol alia trïnidadensis?, Gïoborotalia uncinata?, Globorotalİa angulata,Globorotalia pseudomenardü, Globorotalİa ırelaseoensis, Miscellanea raigeeUa, Globorotalla subbotinae,Globorotalia formosa formosa? foraminiferal zones have been determined and by nannopianktons,Uniplanarkis trifidus zone in Kastei Formation and Crucİpİacolithus tennis, C^asmoUthus danîcus, Ellipsolithus maeeUus, Fasclcullthus tynapanlformis» Discoaster multiradiatus, TiibracMatus contortuszones in Gtfmav Formation have also been determined.