U-Pb age of two-feldspar granite of the Vishnevoe massif of the Slavgorod block (Middle-Dnieper megablock of the Ukrainian Shield)

1Artemenko, GV, Samborska, IA, Gogolev, KI, Vysotsky, AB
1 M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore-Formation of the NAS of Ukraine, Kyiv
Dopov. Nac. akad. nauk Ukr. 2017, 8:51-56
https://doi.org/10.15407/dopovidi2017.08.051
Section: Geosciences
Language: Russian
Abstract: 

It is determined, that two-feldspar granites of the Vishnevoe massif of the Slavgorod block are the most ancient crustal granites in the Middle-Dnieper granite-greenstone terrane. Their isotopic age for monazite — 2985 Ma. They are close in age with enderbites of the Slavgorod complex (3014 ± 7 Ma) and granodiorites of the Dnieper complex (2972 ± 6 Ma) on the Slavgorod block, indicating their formation within a short time interval, probably as a result of the plume rise about 3000 Ma ago. Plagiogranitoids were formed by the partial melting of a mafic source, and two-feldspar granites by the partial melting of the older gneiss basement.

Keywords: Demuryno complex, monazite, Slavgorod block, two-feldspar granite, Ukrainian Shield, Vyshnevoe massif
References: 
  1. Orsa, V. I. (1988). Granite formation in the Middle-Dnieper precambrian granite-greenstone region. Kiev: Naukova Dumka (in Russian).
  2. Berzenin, B. Z. (1974). Petrogenesis, geological structure and features of metallogeny of the Precambrian area of Slavgorod-Sinelnikovo magnetic anomalies. Geol. Zhurn., 34, Iss. 1, pp. 107-111 (in Russian).
  3. Bobrov, A. B., Kiriljuk, V. P., Goshovskij, S. V., Stepanjuk, L. M., Gurskij, D. S., Lysar, A. M., Sivoronov, A. A., Bezvinnyj, V. P., Zjul'cle, V. V., Prihod'ko, V. L. & Shpyl'chak, V. A. (2010). Granulite structural and formation complexes of the Ukrainian shield — European standard. Lviv: ZUKTs (in Russian).
  4. Merkushyn, I. Ye., Bobrov, O. B., Lysenko, O. A. & Shpyl'chak, V. O. (2009). Report on scientific-research work “Problems of geology granulta complexes Middle-Dnieper for the optimization of directions of prospecting works on non-ferrous and noble metals”. Kiev (in Ukrainian).
  5. Bogatikov, O. A., Gonshakova, V. I. et al. (Eds.) (1983). Magmatic rocks: classification, nomenclature, petrography (Vol. 1. Pt. 1). Moscow: Nauka (in Russian).
  6. Sun, S. S. & McDonough, W. F. (1989). Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In Saunders, A. D. & Norry, M. J. (Eds.). Magmatism in the Ocean Basins (pp. 313-345). Oxford: Blackwell. https://doi.org/10.1144/GSL.SP.1989.042.01.19
  7. Stacey, J. S. & Kramers, J. D. (1975). Approximation of terrestrial lead isotope evolution by a two-stage model. Earth Planet. Sci. Lett., 26, Iss. 2, pp. 207-221. https://doi.org/10.1016/0012-821X(75)90088-6
  8. Artemenko, G. V., Tatarinova, E. A., Demedjuk, V. V. & Shvajka, I. A. (2004). Dating of granitoids of the Slavgorod block (Middle-Dnieper megablock). Dopov. Nac. akad. nauk Ukr., No. 8, pp. 113-117 (in Russian).