The first dating results for gabbro of the dunite-clinopyroxenite-gabbro complex of the Chistop massif (North Urals)

摘要

The first data on the Late Riphean age by U-Pb and Sm-Nd analysis (ae922 +/- 14 and 686 +/- 19 Ma, respectively) were obtained for rocks of the dunite-clinopyroxenite-gabbro complex of the Chistop massif in the Patinum-bearing Belt of the Urals. These data allow one to assume that the formation of the Ural paleoocean probably started immediately after the break-up of Rodinia.