THE END TIME OF ULTRAMAFIC MAGMATISM IN THE URAL PLATINUM BELT
A comprehensive petrologic study and age determinations of a young clinopyroxenite-gabbro-hornblendite series, intruded in deformed dunites, clinopyroxenites and tilaite of the Kytlym mafic-ultramafic massif, have been carried out. The geochronological data obtained by 40Ar–39Ar on amphibole from clinopyroxenite and by U–Pb isotopic method for zircon from melanogabbro, corresponds to 415 Ma and indicates the end time of ultramafic magmatism in the Ural Platinum Belt took place in Early Devonian.