V.P. Kyrylyuk. PETROPARAGENESES AND POSSIBLE ORIGIN OF THE BUG AREA GRANULITE COMPLEX SUPERCRUSTAL FORMATIONS (WESTERN PART OF UKRAINIAN SHIELD). Article 3

https://doi.org/10.15407/mineraljournal.41.03.082

UDC 551.71:552.11/.13/.4

PETROPARAGENESES AND POSSIBLE ORIGIN OF THE BUG AREA GRANULITE COMPLEX SUPERCRUSTAL FORMATIONS (WESTERN PART OF UKRAINIAN SHIELD). Article 3. The proposed initial composition and conditions for the formation of the complex

V.P. Kyrylyuk, https://orcid.org/0000-0001-7649-9432

M.I. Bogdanova, https://orcid.org/0000-0002-7850-4482

E.I. Savina, https://orcid.org/0000-0001-5551-8630

Ivan Franko National University of Lviv

4, Grushevskogo Str., Lviv, Ukraine, 79005

E-mail: Kyrylyuk.V@i.ua

Language: Russian

Mineralogical journal 2019, 41 (3): 82-921

Abstract: Introduction. Early published articles have shown that there are seven main and three minor petroparageneses of metamorphic rocks found in the Bug Area granulite complex. Each petroparageneses includes two or four petrotypes. Typomorphic signs of the petrotypes are considered and conclusions about their primary nature - lithogenic or volcanogenic – are drawn. Basic trends of geological section structure. This article discusses the spreading of single petrographic and petrochemical groups of rocks in the section of the Bug Area complex. Two petrogenetic constituents are established in the complex - a directed evolutionary range of lithogenic formations and an independent volcanogenic range, whose members are distributed among different formations and form single independent enderbite-gneiss formation. Conditions of forming of complex. Petrogenetic interpretation of the compositional features and structure of marble-calciphyric petroparagenesis makes it possible to reach a conclusion about probable nonhydrosphereless subaerial conditions of its formation. It was a result of interaction between high-temperature (about +300 °C) carbon dioxide rich atmosphere and silicate lithosphere. This reaction explains the combined accumulation of carbonate and silica constituents that are altered into marbles and calciphyres at subsequent metamorphism. Nonhydrosphereless conditions exist during the formation of the whole of the Bug Area complex and the initial composition of all the proposed metalithogenic formations is considered from these standpoints. At the same time, regardless of the concepts about the origin and formation conditions the Bug Area complex does not have any analogues (by its petroparagenetic and geological-formation composition) among both other, less metamorphosed Lower Precambrian complexes, or non-metamorphosed Phanerozoic complexes with taking into account the "elimination" (imageable removal) of metamorphism. In any case it indicates very specific conditions for the formation of the initial "pre-metamorphic" strata of the Bug Area complex, which have a global nature.

Keywords: granulite complex, supercrustal formation, petroparagenesis, petrotype.

References:

  1. Bilonizhka, P.M., Gerenchuk, N.K., Zubova, S.N., Kyrylyk, V.P., Lashmanov, V.I. and Martynova, S.S. (1981), Problemy osadochnoy geologii dokembriya, Vyp. 6, Nauka, Moscow, RU, pp. 86-89 [in Russian].
  2. Volkov, V.P. (1983), Chemistry of atmosphere and surface of Venus, Nauka, Moscow, RU, 206 p. [in Russian].
  3. Kazanskiy, Yu.P. (1983), Introduction in theory of sedimentation, Nauka, Novosibirsk, RU, 223 p. [in Russian].
  4. Kyrylyuk, V.P. (1971), Geol. zhurn., Vol. 31, No. 6, Kyiv, UA, рp. 42-54 [in Russian].
  5. Kyrylyuk, V.P. (1977), Mezhvuzovskiy nauchnyy tematicheskiy sb., Geologiya metamorficheskih kompleksov, Vyp. 6, Izd-vo Ural. Politech. Inst., Sverdlovsk, RU, pp. 40-47 [in Russian].
  6. Kyrylyuk, V.P. (2013), Geodynamika, Vyp. 14, No. 1, Lviv, UA, рp. 82-97 [in Ukrainian]. https://doi.org/10.23939/jgd2013.01.082
  7. Kyrylyuk, V.P., Bogdanova, M.I. and Savina, E.I. (2019), Mineral. Journ. (Ukraine), Vol. 41, No. 1, Kyiv, UA, pp. 60-70. [in Russian]. https://doi.org/10.15407/mineraljournal.41.01.060
  8. Lazurenko, V.I. (1978), Geol. zhurn., Vol. 38, No. 3, Kyiv, UA, pp. 78-88 [in Russian].
  9. Lazurenko, V.I., Mamchur, G.P., Suleymanov, S.P. and Petrenko, L.V. (1979), Problemy geologii i stratigrafii dokembriya Ukrainy, Nauk. dumka, Kyiv, UA, pp. 82-92 [in Russian].
  10. Lazurenko, V.I., Ryabenko, V.A. and Horunzhiy, V.Ya. (1976), Geol. zhurn., Vol. 36, No. 6, Kyiv, UA, pp. 126-130 [in Russian].
  11. Lazko, E.M., Kyrylyuk, V.P., Sivoronov, A.A. and Yatsenko, G.M. (1975), Lower Precambrian of the Western part of the Ukrainian Shield (age complexes and formations), Vyshcha shkola, Lvov, UA, 239 р. [in Russian].
  12. Predovskiy, A.A. (1980), Reconstruction of the conditions of sedimentogenesis and volcanism of Lower Precambrian, Nauka, Leningrad, RU, 152 p. [in Russian].
  13. Salop, L.I. (1982), Geological development of Earth in Precambrian, Nedra, Leningrad, RU, 343 p. [in Russian]. https://doi.org/10.1007/978-3-642-68684-9
  14. Sivoronov, A.A. (1971), Geological conditions of the origin of precambrian iron-ore formation of Western part of the Ukrainian Shield, Abstr. dis. cand. geol.-mineral. sci., Lvov, UA, 24 p. [in Russian].
  15. Smirnov, A.M. (1976), Precambrian of North-West of Pacific mobile belt, Nauka, Moscow, RU, 224 p. [in Russian].
  16. Travin, L.V. (1975), Stratigraphy and premetamorphic formations of Archaean of Aldan-Uchur country between (Aldanian Shield), Abstr. dis. cand. geol.-mineral. sci., Leningrad, RU, 29 p. [in Russian].
  17. Folsome, C.E. (1983), The Origin of Life. А Warm Little Pond, Transl. from Engl. by Kirpotin, D.B., Mir, Moscow, RU, 160 p. [in Russian].
  18. Shuldiner, V.I. (1976), Geologiya i geofizika, No. 2, Novosibirsk, RU, pp. 67-75 [in Russian].
  19. Shuldiner, V.I. (1982), Precambrian basement of Pacific belt and the framing platforms, Nedra, Moscow, RU, 226 p. [in Russian].
  20. Shumlyanskyy, L.V. (2012), Mineral. Journ. (Ukraine), Vol. 34, No. 2, Kyiv, UA, рр. 64-79 [in Ukrainian].
  21. Shcherbakov, I.B. (1975), Petrology of Precambrian rocks of the Central Part of Ukrainian Shield, Nauk. dumka, Kyiv, UA, 279 p. [in Russian].

PDF

English