Age of monzodiorite porphyries from the late dike phase of the Kongor pluton (the Polar Urals) according to the results of U-Pb (SIMS) dating of zircons

The paper presents the results of U-Pb (SIMS) isotope dating of zircons from monzodiorite porphyries of the late dike phase of the Kongor Pluton (the Polar Urals), which is a petrotype pluton of the Kongor plutonic complex. The intrusive rocks studied were formed in the deeper parts of the Devonian Malyi Ural island arc and belong to the shoshonite-latite series. The calculated average concordant age of zircons is 395 ± 3 Ma, indicating that the completion of the formation of this pluton took place at the end of the early Devonian in late Emsian time. The obtained data are important for specification of an age of the Kongor complex, which for a long time has been the subject of discussions.