L.M. Stepanyuk. SOME DEBATABLE ISSUES ABOUT THE STRATIGRAPHY OF BUG AREA GRANULITE COMPLEX

https://doi.org/10.15407/mineraljournal.41.02.095

UDC 550.93:551.71/.72

L.M. Stepanyuk 1, https://orcid.org/0000-0001-5591-5169

O.V. Hrinchenko 2 https://orcid.org/0000-0003-3030-1720

1 M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine

34, Acad. Palladin Ave., Kyiv, Ukraine, 03142

E-mail: stepaniuk@nas.gov.ua

2 Kyiv Taras Shevchenko National University. Educational-scientific institute "Institute of Geology"

90, Vasylkivska Str., Kyiv, Ukraine, 03022

E-mail: alexgrin@univ.kiev.ua

SOME DEBATABLE ISSUES ABOUT THE STRATIGRAPHY OF BUG AREA GRANULITE COMPLEX

Language: Ukrainian

Mineralogical journal 2019, 41 (2): 95-99

Abstract: This paper discusses some debatable issues about the Bug Area granulite complex, in particular primary nature of some petrotypes of basic petroparageneses discussed in the article published by Ivan Franko National University of Lviv workers V.P. Kyrylyuk, M.I. Bogdanova, E.I. Savina, "Petroparageneses and Possible Origin of the Bug Area Granulite Complex Supercrustal Formations (Western Part of Ukrainian Shield). Article 2. Petroparageneses of the Supercrustal Formations and Typomorphic Features of Petrotypes". In particular, metasomatic nature of leucogranulitic petroparagenesis (leucogranulitic formation) is highlighted. The statement about radical difference between hypersthene gneisses distributed to the north of Zavallia village (aluminous-basic formation) and their parental rocks, distributed in the surrounding area of Haivoron town (enderbite-gneissic formation), is disproved. Incorrect interpretation of aluminous-basic formation as a separate stratigraphic unit (Salkivska suite) is substantiated based on presence of metasomatic and intrusive-magmatic rocks within the section of this formation.

Keywords: granulite complex, supracrustal formation, metasomatism.

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