UDC 552.43:550.42:550.93(477):549 • Issue 7 (35) / 2022 • 47-50 pages
G. Artemenko, L. Shumlyanskyy, I. Shvaika, V. Butyrin
G.V. Artemenko, D. Sc. (Geol.), Prof., Head of Department, M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine, 34, Acad. Palladin Ave., Kyiv, Ukraine, 03142 E-mail: regulgeo@gmail.com; https://orcid.org/0000-0002-4528-6853
L.V. Shumlyanskyy, D. Sc. (Geol.), Curtin University, School of Earth and planetary sciences, Perth, Australia, M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine E-mail: leonid.shumlyanskyy@curtin.edu.au; https://orcid.org/0000-0001-5591-5169
I.A. Shvaika, PhD (Geol.), Research Fellow, M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine 34, Acad. Palladin Ave., Kyiv, Ukraine, 03142 E-mail: ishvaika@gmail.com; https://orcid.org /0000-0001-9585-4380
V.K. Butyrin, Leading Engineer, State enterprise “Pivdenukrgeologiya” 11, Chernyshevsky Str., Dnipro, Ukraine, 49000, E-mail: butyrin@gmail.com
Abstract
The Middle – Dnieper megablock, which is a fragment of archean craton, differs from other cratons on Earth by a large variety of Archean granitoids (Tok, Mokro-Moscowka, and Demurino complexes) which were formed later than the Mesoarchean TTG of sura complex. In this regard, the Middle – Dnieper megablock is an important area for studying the genesis and geodynamic conditions of Late Archaean granitoid formation. The poorly studied Late Archean granitoids in the Middle – Dnieper block include the Hannivka granites in the East Hannivka monocline of the Kryvyi Rig – Kremenchuk structure, the age and stratigraphic position of which have been the subject of a long debate. The aim of the work is to determine geochemical peculiarities. genesis and U-Pb age of Hannivka granites and to compare them with other archean granitoid complexes of the Middle-Dnieper fragment of the Mesoarchean craton. The LA-ICP-MS method determined the U-Pb age of zircon from Hannivka granite 2827 ± 16 Ma. They are close in time to the granitoids of the Tok and Mokro-Moscowka complexes and were formed much later than the granitoids of the Demurino complex. The Hannivka granites could have been formed in a crustal magmatic source as a result of melting of an older crust. They differ from other Archaean granitoids of the Middle-Dnieper megablock by the increased content of U (56.4 ppm) and the presence of Mo (4.3 ppm). Unsolved problems that require further study include determination of the connection of Hannivka granites with granitoid intrusions of the Mokra-Moscowka and Tok complexes outside the Eastern Hannivka structure and the origin of ore mineralization for uranium and molybdenum.
Key words: Hannivka granites, Middle-Dnieper megablock, East Hanniv monocline, craton, U-Pb age, LA-ICP-MS method
Article
Reference
1. Artemenko, G.V. (2021), Geochemical features of granitoids of the Krivoy Rog-Kremenchug structure. Proceedings of the international scientific and practical conference “Development of industry and prosperity” Kryvyi Rih National University, Kryvyi Rih, May, pp. 4-13 [in Russian].
2. Velikanov, Yu.F., Velikanova, O.Yu., Gorlitsky, B.A., Zankevich, B.A., Koval, V.B. (2005), Granitoids framing Krivbass. Geological and structural position of the granites of the East Annovka strip, Geological and Mineralogical Bulletin, No 2. pp. 48-57
[in Russian].
3. Zmievsky, G.E., Paranko, I.S., Zolotareva, L.I. (1990), Comprehensive geological study of the drilling area of the Krivyi Rig super-deep well (second stage, GIP 2). Search and filming team of the Krivoy Rog GRE, Krivoy Rog [in Russian].
4. Orsa, V.I. (1988), Granite formation in the Precambrian of the Middle Dnieper granite-greenstone region. Kyiv: Naukova Dumka, 204 p. [In Russian].
5. Shcherbak, N.P., Artemenko, G. V., Bartnitsky, E.N., Zmievskii, G.E., and Tatarinova, E.A. (1989), Age of sedimentary-volcanogenic formations of the East-Annovka zone, Reports of the Academy of Sciences of the Ukrainian SSR, V.B., No 2, pp. 30-35 [in Russian].
6. Laurent, O., Martin, H., Moyen, J.F., Doucelance, R.(2014), The diversity and evolution of late-Archean granitoids: Evidence for the onset of “modern-style” plate tectonics between 3.0 and 2.5 Ga. Lithos, 205. pp. 1-28.