Petrofabrical analysis of Hamedan metamorphic rocksWith chiefly view to surface minerals of biotite and Muscovite

Category Petrology
Group GSI.IR
Location 21th symposium on geosciences
Holding Date 21 May 2008

      The studied region is located southeast of Hamedan in the northern part of the Sanandaj-Sirjan belt. This region mainly consists of variety micaschist and slate. The age of this complex dates to the pre-Jurassic period. During the two phases which this region have undergone, plastic deformation and metamorphism, the chiefly fabric element formed. The important fabric elements formed at the first phase are first schistosity and first lineation and during the second phase formed second schistosity and second lineation. The second phase higher than the first phase and then the fabric elements developed further. One of the important sub-fabric elements formed in the micaschist is the surface of the mica cleavage chiefly biotite.
   On the petro-fabric study creation and orientation of the micas cleavages {001} in the all of the metamorphic zones formed during second deformation and comparison of those with another fabric elements, conclude that the second deformation was created by effect of lateral force with N56 trend.