Based on the isotope-geochronological (zircons, U-Pb method), petrogeochemical, and structural petrologic data, following paper provides a detailed description of characteristics Late Paleozoic basic granitoid magmatism in eastern part Kaakhem magmatic area (Eastern Tuva). During formation Shivey alkaline-granitoid Chadal gabbroid massifs period 292–283 Ma, there were revealed two stages contra...