Metamorphic plagioclasites of MUF zone as a result of mesozoic stages of formation of Ural orogen

The composition and age of the metamorphic plagioclasites veins localized at the base of Voikar-Syninskiy ophiolite allochthone Polar Urals were studied. Plagiogranite-diorite rock formations accretion genesis was protolith for plagioclasites. Dating conversion processes plagiogranite-diorite formation in plagioclasites allows to snap tectonic processes throughout the collision to a certain time abroad. The main rock-forming mineral plagioclasites were studied by powder X-ray diffraction, microprobe and 40Ar/ 39Ar method. The main mineral is acid plagioclase structurally corresponding to very low orderly albite. The age of plagioclasites by 40Ar/ 39Ar method is (210.0 ± 4.3) mа years, and reflects the upthrust and shear process at a late stage of the collision, fixing line Mesozoic accretionary-collisional evolution of the Ural Orogen.