Abstract
The results of isotopic-geochronological investigations of detrital zircons from metasediments of the Fedorovka structure in the Azov Domain of the Ukrainian Shield by SIMS and LA-ICP-MS methods are considered. The data obtained are compared with the results of isotopic dating of zircons from metasediments of the Soroki greenstone structure of the Azov region. All the examined samples yielded zircons with ages exceeding 3600 Ma. The geochemical properties of the oldest zircons indicate that they originate immediately from tonalite rocks. The obtained data imply substantially wider development of the Paleoarchean crust in the Ukrainian Shield than was previously thought.
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Original Russian Text © E.V. Bibikova, A.A. Fedotova, S. Claesson, G.V. Artemenko, M.O. Anosova, 2012, published in Stratigrafiya. Geologicheskaya Korrelyatsiya, 2012, Vol. 20, No. 2, pp. 13–26.
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Bibikova, E.V., Fedotova, A.A., Claesson, S. et al. The early crust beneath the Azov Domain of the Ukrainian Shield: Isotopic-geochronological and geochemical investigations of detrital zircons from metasedimentary rocks of the Fedorovka structure. Stratigr. Geol. Correl. 20, 125–138 (2012). https://doi.org/10.1134/S0869593812020037
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DOI: https://doi.org/10.1134/S0869593812020037