Abstract: The presences of base-cover separation are established as all Pontid Tectonic Belt whenstratigraphic units are investigated in the studied area that is located at the northwest of Tokat city. UpperMesozoic cover units are one of cover units located uncormably on base units and are interesting in termsof fossil content and diversity. In this study, these units are dated as detail and stratigraphy of region isconstructed according to these ages. In addition, data of the geologic and stratigraphic positions of studyarea are observed.