ABSTRACT: It is widely known that the emplacement of magmatio infernsfons iid not take plae© in a single phase `tel; that ötey rather intruded anil were emplaced within or next ta each other in different phases,» ît Is also an accepted view that maginatie intrusions ol granitic origin, because of their low density, analogous »alt domes, tend to intrude in a diapric form and manner, Tli© opinion that a granitic mass was a product of a single intrusion, widely lost support« Slnee there are intrusions unplaced in different phases within or next to each other then ît is also probable that they also differentiated and crystallized independently in different times. In this work, the above view is© being discussed and Kırklareli Demirköy granodioritic mass, which bad bmn studied in detail taken as a model for calculations and statistical application ami imterprotattons of differentiation andı eaystal&atioii ftukxses.