Torgovsk - Keftalyk granitoid massif (Subpolar Urals): isotopic geochemical data

Isotopic and geochemical characteristics of Torgovsk-Keftalyk granitoid massif (Subpolar Urals) are considered. Modern U-Pb isotopic data on zircons indicate the formation of granitoids at the Vendian-Cambrian boundary. Negative valuesNd(t) from -0.3 to -2.7 testify to maturity of crustal substrate participatingin melting. A-type granites have intraplate characteristics are syn and postcolli-sional preuralic formations. Rocks have intraplate characteristics of synandpostcollisional A-type granitoids in the structure of douralids.