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Information × Registration Number 0201U001631, 0193U018276 , R & D reports Title Geochemistry of rare elements in processes endogenetic ore formation popup.stage_title Head Zagnitko V. M., Registration Date 13-02-2001 Organization nstitute of Geochemistry, Mineralogy and Ore Formation popup.description2 The purpose of the work consists in establishing of rare element distribution in rocks and minerals of Ukraine in restoring of endogenous ore-forming process evolution in a geological history of Ukraine. The research method: composition definition by atom absorption, X-ray and chemical ones, U-Rb, Sm-Nd, K-Ar age determination, mass spectrometry technique. As a result of sulfiled works is the investigation of the main endogenous processes, which had caused concentration of rare metals in natural objects of Ukraine: magmatic, hydrothermal, metasomatic and hydrochemical. The detailed classification of these processes and their main physics - chemical parameters are worked out. The age of the main deposits of zirconium and rare earths (Nova Poltavka, Mazurova ravine, Azov, Yastrubetskoye) is determined. The arguments for the belonging of these deposits to two different age formation-alkaline ultrasic and gabbro-syenitic are given. It is worked out the scheme of the evolution of rare-metal ore formation i n precambrion geological history of Ukraine, in which five epochs are distinguished: Late Ardu an (3.1-2.6 Ga), Early Proterozoic (2.5-1.9 Ga), Late Proterozoic(1.8-1.6 Ga), Hercynian (0.4-0.25 Ga) and Alpine (from 0.1 Ga). The results of research work were into the Expeditions of the Department on Geology and Earth's bowels of the Ministry of Ecology of Ukraine. Product Description popup.authors popup.nrat_date 2020-04-02 Close