Abstract: Rize-Fmdıklı-Çamlıhemşin area of, Eastern Black Sea region aie geologically studied. Petrographicaiand geochemical characteristics of the formations, tectonic environments and origin of the magmatic rocks are discussed.Within the study area Hemşindere foımation of Upper Cretaceous age, which formes the basement, comprise basic andacid volcanics like basalt, basaltic andésite, dacite, rfayodacite and rhyolite and rarely some andesitic intermediate volcanies, Volcanic members of Melyat formation of Eocene age are basaltic and generally subalkaline (calcalkaline + tholeiitic) in compostions. Infusions of the basic and acidic plutonic rocks (Upper Cretaceous-Paleocene), varies from gabbroto granite, cut the volcanics of Hemşindere formation. As a result of petrochemical studies, these plutonic rocks aremainly composed of gabbro, quartz diorite, tonalite, granodiorite and adameiiite. According to classification of Debonand Le Fort, plutonic rocks are calcalkaline having kafemic association properties. Within the study area magmaticrocks represent the characteristics of island arc magpiatism formed on subduction zone. Also distrubition and the originof the magmatic rocks around Eastern Pontids are discussed.