GEOCHRONOLOGY OF CRYSTALLINE ROCKS OF THE SHUMYLIV SECTION OF THE SOUTH BUG RIVER VALLEY (HAISYN BLOCK)

The Haisyn complex rocks (sobites (Shcherbakov, 2005)), consisting of diorite-like and amphibolites, which biotite granites develop, is outcroping near the village Shumyliv along South Bug river in an abandoned open pit mine (on Shumyliv). are characterized by high magnetization according to magnetic survey results. A linear anomaly extends north-east direction (NE 69º) with a distance more than 35 km. Entin et al. (2019) proposed that this caused dyke felsic or intermediate composition. internal structure accessory zircon crystals from quartz diorite granite were studied. In both types rocks, consist three different generations. first generation consists fractured nuclei light pink color, apparently grew rims 2nd and/or 3rd generation. Zircon second color. It forms around zircon, but also occasionally occurs interior core areas crystals. Third two zircons, growth episodes. As usually, heads have brown age formation monazite titanite was determined uranium-lead isotope method. endogenous geological processes ages 2049 ± 6 million years 2005±2 years, respectively.