U-Pb ВОЗРАСТ И СОСТАВ ПОРОД БЕРЕЗОВСКОГО ЗОЛОТОРУДНОГО ПОЛЯ (СРЕДНИЙ УРАЛ)

Berezovsk ore field is located in the Middle Ural. It includes Berezovsk large gold deposit and a number of smaller deposits. We present new U-Pb age data for magmatic and hydrothermal-metasomatic rocks from the ore field. The ages of zircon from granites and from granite-porphyry intrusive-dike complex are 305 ± 7 and 302 ± 3 Ma respectively. The age of quartz-sericite-pyrite metasomatic rocks accompanying the gold-sulfide hydrothermal mineralization is 294 ± 2 Ma.The study of chemical composition and age of granites from the ore field showed their correspondence to the late stage of subduction-related granodiorite-granite rocks in the active continental margine. The age of metasomatic processes and associated hydrothermal gold mineralization corresponds to the termination of this stage of magmatism in the Middle Ural.