The Age of Metamorphism of Granulite Complexes of the Voronezh Crystalline Massif: The Monazite U—Pb Geochronology

摘要

Over recent decades, studies on the reconstruction of the geodynamic evolution of the lithosphere of the East European Platform, including the Voronezh crystalline massif (VCM), have been carried out actively. The reliability of these reconstructions has some disadvantages due to insufficient geochronological knowledge of the Precambrian metamorphic regions, which is about 90% of the total volume of the continental crust within the VCM. The Voronezh crystalline massif is a large rise (600 × 800 km) of the East European Platform basement, bounded by a system of grabenlike aulacogenes (Pachelmskii, Moskovskii, Gzhatskii, and Toropets-Vyazemskii) from the north and northeast, Dnepr-Donetsk aulacogene from the south, and the Orsha Depression from the south, and the Pricaspian depression from the east. The VCM together with the Ukrainian Shield (USh) forms one of Earth's three crust segments of the Precambrian basement of the East European Craton (Sarmatia) [1].