Abstract: Granitic rocks cropping out in the Eastern Pontids are of Upper Cretaceous-Eocene in age and generally have quartz dioritegranodior ite-granite and tonalite composition in the northern parts. A number of porphyry Cu and Mo mineralizations are formed inrelation to these granitoids. Chemical investigations showed that these rocks are of l-type with calc-alkali affinity In addition they indicate an environment of island-arc which is gradually becomming mature.