Abstract: This study investigates the stratigraphy of the Hekimhan-Hasançelebi region situated on the eastern Tauride system, the evolution of the basin named as Hekimhan basin and the position of this with respect to the regional geology. The Hocalıkova ophiolite which was emplaced approximetly from north to south in the Late Campanian consitutes the basement of the region. Hekimhan basin was opened after the emplacement of the ophiolite. The Karadere formation, that is composed ofelastics was deposited in fluvio-deltaic, delta and shallow marine environments in the Late Campanian-Early Maastrichtian unconformably overlies the ophiolite. The Upper Campanian-Upper Maastrichtian aged Hekimhan formation that composed of mostlyelastics was deposited by tectonically controlled trangresion. Hasançelebi volcanites of alkaline character are intertongued with themiddle and upper parts of Hekimhan formation indicating a contemporary occur ence. The alkaline Yüceşafak syenitoid cuts the volcanites by causing contact metamorphism and metasomatism. The above mentioned magmatism indicates the progressive thinningand enlargement of the basin. The Hüyük limestone deposited in two different environments as inner shelf at the north and middleshelf at the south, reflects the deepening and maturation of the basin towards the south. At the northern parts Zorbehan dolomite was formed in the logoonal conditions under the influence of the volcanism and tectonism that gained activation intermittendly. Thebasin reached its maximum depth and width in the Late Maastrichtian. The economic iron ore deposits were formed in that period.The Tertiary and Cretaceous units are conformable in Hekimhan region whereas they are uncorformable in Hasançelebi region. According to the stratigraphy explained above, the crust thickness was increased by the emplacement of the ophiolite. Therefore the region was tr(informed in positive area by an uplift, and an ensialUc back-arc basin was opened at the north of the Yüksekova Baskil arc under the control of ienskmal forces in the Late Campanian. The basin became mature at the Late Maastrichtian and closed at the end of the Middle Eocene.