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Information × Registration Number 0123U100768, ( 0226U000684  ) R & D request Title Stages of continental lithosphere growth of the Azov and Middle Dnieper blocks of the Ukrainian Shield in the Early Precambrian (4.0-2.0 billion years) Head Artemenko Hennadii V., Доктор геологічних наук Registration Date 02-02-2023 Organization M. P. Semenenko Institute of geochemistry, mineralogy and ore formation National Academy of Sciences of Ukraine popup.description1 On the basis of U-Pb geochronological data, determine the main stages of the formation of the Earth's crust of the Azov and Middle Dnieper megablocks of the Ukrainian Shield from the Upper Hadean to the Paleoproterozoic (3.97-2.0 billion years). Reconstruction of the composition of the Upper Hadean and Eoarchean crust based on geochemical and Lu-Hf isotopic data of relict and clastogenic zircon of this age. To carry out an age correlation of the oldest crust of the Azov domain with the studied of Hadean-Eoarchean complexes of Canada, Greenland and Western Australia. To perform a petrological and mineralogical study of the BIF of the Western Azov series of the Partizan-Stulnevo anticline. To determine the spatial distribution of 3.3-billion-year-old tonalites that probably made up the Upper Paleoarchean protocraton. To carry out a geochronological and petrological study of garnet-biotite gneisses, BIF and amphibolites of the Tomakivka stratum of the Auly series of the Middle Dnieper megablock in order to determine their age and genesis. To reconstruct the geodynamik conditions of formation of Mesoarchean greenstone structures of the Azov and Middle Dnieper megablocks. Correlation of the magmatic complexes of the Azov and Middle Dnieper megablocks with the KMA megablock. Conduct geochronological and petrological studies of metabasites, metakomatiites and granitoids in the Gaichur structure in order to determine the genesis of this structure. Find Neoarchean (2620 Ma) granitoids in the Pravoberezhny district. On the KMA megablock, granitoids of this age (Ataman complex) and acidic metavolcanites of the Lebedin series complete the Neoarchean section. Compare the Neoarchean-Paleoproterozoic sedimentary-volcanogenic series and magmatic complexes of the Azov and Middle Dnieper megablocks with similar formations of the Pilbara, Kaapvaal, and KMA blocks, which are assumed to have been part of the Vaalbara supercontinent. popup.nrat_date 2024-12-09 Close