Abstract: In thisstudy, volcanic rocks outcropped in theKefken-Kerpe (north ofKandira) areawere investigated interms of their geochemical and geological characteristics. The field studies undertaken around Babakoy, Kefkenand Cebeci indicated that Çangaza volcanic rocks and the Late Cretaceous-Early Eocene Akveren formation alsocontaining Sermi limestone are the main lithological units in the area. The Early-Middle Eocene Caycumaformation, composed mainly of a sandstone, siltstone and claystone sequence, overlies uncomformably the olderunits. Petrographical and petrological analyses of Cangaza volcanic rocks show that these rocks are mainlycomposed of andesitic and basaltic-andesitic rock types. Major oxide geochemical analyses of 22 samplesindicated that the rocks are subalkaline in character. Trace element characteristics of the volcanic rocks areconsistent with an origin formed by a calk-alkaline Island Arc Tholeitic (IAT) magma within an oceanicsubduction system.