Abstract: In the shear zones, which are developed by ductile behaviour of crystalline rocks, the grainshape analyses were carried out and the rose diagrams of dimensional grain orientation were also produced. The geometrical variations of the shapes of the rock-forming minerals and their dimensionalpreferred orientation are related to the tectonic history of the shear zones and in agreement to theresults derived from petrofabric analyses. In spite f)i these, it can be concluded that the statistical results, obtained from the grain shape analyses, do not reflect properly the absolute amount of natural deformation and the range of strain variation within the shear belts.