The study region covering 610 square kilometers is located in south-east of Hamedan in the northern part of the Sanandj­-Sirjan belt. This region consists mainly of micaschists and slate with a nearly northwest - southeast trend. This complex (tectonites) is Pre-Jurassic, which during two phases has undergone plastic deformation and comprises chiefly S-L tectonites and in some parts S tectiontes.
In the first phase, schistosity (S₁) was formed Parallel to the sedimentary bedding with average strike and dip ofN135/56E and N138/30SW. Moreover, during this phase many kinds of lineations have resulted from microfold, mineral and pressure shadow. The wavelength of microfolds is a few millimeters and alternatively followed by one another with Nl88/12 trend. Minerals which constitute the lineation are mica and amphibole. Staurolite and garnet porphyroblasts are pre to syn-tectonic. Also at this phase, intrafolial folds of quartz vein were formed in between the first schistosity,
The second phase of deformation was created following the lateral forces (with N56 trend) which constitutes the basic structure of the region. S₂ Plane in this phase was formed following S₁ flexural- _slip folding which created axial plane of folds with Nl64/61NE and Nl54/64SW. Second lineation (L₂) with average trend and plunge Nl57/07 is also the axies of these microfolds. Other lineations of this phase are intersected by andalusite lineations which are L₂. Macrofolds are longitudinal type and located in succeeding anticlines and synclines with average axial plane of Nl48/74SW parallel to L₂. Muscovite and quartz subfabric elements are oriented in this phase and like S₁, S₂ and L₂ fabric elements have orthorombic symmetry.