МІНЕРАЛОГО-ПЕТРОГРАФІЧНА ХАРАКТЕРИСТИКА ГАБРОЇДІВ ГОРОДИЩЕНСЬКОГО МАСИВУ (КОРСУНЬ-НОВОМИРГОРОДСЬКИЙ ПЛУТОН УКРАЇНСЬКОГО ЩИТА)

О. Кірієнко; О. Митрохин

doi:10.17721/1728-2713.65.05

Authors

O. Kiriienko Institute of Geology, Taras Schevchenko National University of Kyiv 90 Vasylkivska Str., Kyiv, 03022 Ukraine
O. Mitrokhin Institute of Geology, Taras Schevchenko National University of Kyiv 90 Vasylkivska Str., Kyiv, 03022 Ukraine

DOI:

https://doi.org/10.17721/1728-2713.65.05

Keywords:

anorthosites, norites, feldspar norites, olivine norites, gabbro-anorthosite massifs, Korsun-Novomyrhorodsky pluton, Ukrainian shield

Abstract

This research was aimed at compiling data on the mineralogical-petrographic features of the major rocks which are typical of the Horodyshchensky massif to solve the problems of geological differentiation and correlation between the intrusive formations of Korsun-Novomyrhorodsky pluton and to determine the conditions of their formation. Use has been made of mineralogical-petrographic, geochemical and general scientific methods. Previous research results in the field have been amplified with new data on the mineral composition of the Korsun-Novomyrhorodsky pluton gabbroids. In addition, we were the first to identify a number of accessory minerals in the rocks under study: baddeleyite, orthite, monazite, and thorite. The research results showed that the major rock-forming minerals in the studied gabbroids differ in their chemical composition, depending on the petrographic type of rock, zoning of mineral grains, and exsolved microtextures. The obtained data on the mineral composition of the Horodyshchensky massif gabbroids and the variations in the chemistry of rock-forming minerals can be very helpful for studying the geological differentation and correlation between the intrusive formations of Korsun-Novomyrhorodsky pluton as well as clarifying their petrogenesis.

References

Bogatikov O.A., (1979). The anorthosites. – Moskow: The science, 231 p. (In Russian).

Velikoslavinskiy D.A., Birkis A.P., Bogatikov O.A. et al., (1978). The anorthosite-rapakivi-granite formation. – Leningrad: The science, 295 p. (In Russian).

Esipchuk K.E., Sheremet E.M., Zinchenko O.V. et al., (1990). The petrology, geochemistry and ore of intrusive granitoids of Ukrainian shield. – Kyiv: The scientific thought, 236 p. (In Russian).

Kononov Yu.V., (1966). The gabbro massives of Ukrainian shield. – Kyiv: The scientific thought, 99 p. (In Ukrainian).

Kryvdik S.G., Guravskyy T.V., Dubyna O.V. et al., (2009). The features of the mineralogical composition of Nosachivsk apatite-ilmenite deposit (KorsunNovomyrgorod pluton, Ukrainian shield). The mineralogical journal, 3.

Mitrokhin A.V., (2008). Petrographical composition of anorthositerapakivi-granite complexes. Visnyk Kyyivskogo universytetu. Geologiya, 45, 62-66 (In Ukrainian).

Tarasenko V.S., Kolomiets G.D., Boyko D.D., (1986). The petrology and ore of anorthosites of Korsun-Novomyrgorod pluton. The geological journal, 46, 1, 62-69 (In Russian).