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Тезисы международной конференции

Рудный потенциал щелочного, кимберлитового

 и карбонатитового магматизма

Abstracts of International conference

Ore potential of alkaline, kimberlite

and carbonatite magmatism

Post-collision mafic-ultramafic magmatism of the Ukrainian shield (1800 Ma)

Leonid Shumlyanskyy

M.P. Semenenko Institute of geochemistry, mineralogy and ore formation, Kyiv, Ukraine



Application of the methods of in situ geochronology provides growing evidence about importance of the still poorly understood geological event that occurred at c. 1800 Ma. There are at least several magmatic events occurred at this time among which are: (1) emplacement of the “old anorthosite” (Amelin et al., 1994; Verkhogliad, 1995) and oldest granites (Shumlyanskyy and Bogdanova, 2009) of the Korosten plutonic complex; (2) intrusion of dolerite dykes and layered gabbroic massifs in the North-Western region of the Ukrainian shield (Shumlyanskyy et al., 2012; Bogdanova et al., 2012); (3) emplacement of some of the dolerite dykes of the Korosten plutonic complex (Shumlyanskyy and Mazur, 2010). Beside these, zircons of the similar age were revealed in various metamorphic rocks. For instance, 1779 ± 10 Ma zircons were found in amphibolite of the Novokryvorizhska suite (Stepanyuk et al., 2011); 1747 ± 68 Ma zircons present in c. 2090 Ma migmatites of the North-Western region of the Ukrainian shield while 1792,5 ± 8,5 Ma zircons were revealed in the Teteriv Series metasediments metamorphosed at c. 2100 Ma.

These magmatic and metamorphic events coincide with collision (or “docking”) of two segments of the East-European craton – Sarmatia (already joined with Volgo-Uralia) and Fennoscandia (Bogdanova et al., 2006; Elming et al., 2010). Supposedly, collision-related processes (post-collision extension caused by rotation of Sarmatia) led to destabilization of lithosphere, mantle melting and moderate metamorphism. 

Numerous and widely varying in composition (including kimberlite) mafic dykes are abundant in the Kirovograd block; these emplaced probably at the same time. The same can be said about ultramafic alkaline rocks of the Gorodnytsya Complex present in the North-Western region of the Ukrainian shield.

Post-collision magmatism of the Ukrainian shield embraces wide range of the rocks: (1) dykes of subalkaline dolerites and various plutonic rocks of the Korosten complex, including gabbro, anorthosite and granite; (2) numerous dykes of Ni-bearing dolerite and layered massifs of the Prutivka-Kamenka complex; (3) rather rare dykes of subalkaline olivine gabbro of the Strybizh complex; (4) alkaline ultramafic rocks of the Gorodnytsya complex; (5) numerous dykes of the Kirovograd block. All these rocks are related to the same process – collision of Sarmatia and Fennoscandia and destabilization of lithosphere.  

Geochemical and isotope data indicate formation of the initial melts for these rocks from different sources located at various depths, and variably contaminated by the crustal material. Depth of the source of melting gradually increases in the mentioned above sequence while degree of melting decreases.


Amelin Yu.V., Heaman L.M., Verchogliad V.M., Skobelev V.M. Geochronological constraints on the emplacement history of an anorthosite-rapakivi granite suite: U-Pb zircon and baddeleyite study of the Korosten complex, Ukraine. Contrib. Mineral. Petrol. 1994. V.116. P. 411-419.

Bogdanova S. V., Gintov O. B., Kurlovich D., Lubnina N. V., Nilsson M., Orlyuk M. I., Pashkevich I. K., Shumlyanskyy L. V., Starostenko V. I. Late Palaeoproterozoic mafic dyking in the Ukrainian Shield (Volgo-Sarmatia) caused by rotations during the assembly of supercontinent Columbia. Submitted to Lithos

Bogdanova S., Gorbatschev R., Grad M., Janik T., Guterch, A., Kozlovskaya, E., Motuza, G., Skridlaite, G., Starostenko, V., Taran, L., EUROBRIDGE, POLONAISE Working Groups. EUROBRIDGE: new insight into the geodynamic evolution of the East European Craton. In: Gee, D.G., Stephensson, R.A. (Eds.), European Lithosphere Dynamics. 2006. V.32, Geological Society, London, Memoirs. P. 599–625.

Elming S.-Å., Shumlyanskyy L., Kravchenko S., Layer P., Söderlund U. Proterozoic Basic dykes in the Ukrainian Shield: a palaeomagnetic, geochronologic and geochemical study – the accretion of the Ukrainian Shield to Fennoscandia. Precam. Res. 2010. V.178. P. 119-135.

Shumlyanskyy L., Billström K., Hawkesworth C., Elming S.-Å. U-Pb age and Hf isotope compositions of zircons from the north-western region of the Ukrainian shield: mantle melting in response to post-collision extension. Accepted at Terra Nova.

Shumlyanskyy L.V., Bogdanova S.V. U-Pb age of the zircons and geochemistry of the rhyolites of the Ovruch depression. Mineral. journal. 2009. V.31 (1). P. 40-49. (In Ukrainian).

Shumlyanskyy L.V., Mazur M.D. Age and composition of jotunites of the Bilokorovychi dyke swarm. Geologist of Ukraine. 2010. Iss. 1-2. P. 70-78. (In Ukrainian).

Stepanyuk L.M., Bobrov O.B., Paranko I.S., Ponomarenko O.M., Sergeev S.A. Origin and age of zircon from amphibolite of the Novokryvorizhska suite of the Kryvyy Rih structure. Mineral. journal. 2011. V. 33(3). P. 69-76. (In Ukrainian)

Verkhogliad V.M. Age stages of magmatism of the Korosten pluton. Geochemistry and ore formation. 1995. V. 21. P. 34-47. (In Russian).