Article 2. Structural position of suites and strata of the “Bug series”
Keywords:Ukrainian Shield, Middle Bug region, Lower Precambrian, Bug Area granulite complex, Bug series, stratigraphy, stratigraphic dismemberment, structural position
The name “Bug Series” was introduced into the Precambrian stratigraphic scheme of the Ukrainian Shield more than half a century ago. During this period, ideas about the composition and age of the series changed several times, but at the same time, until recently, the opinion of various studies about its stratigenic nature remained unchanged. In recent years, a number of publications have appeared in which other views on the origin of the “Bug series” are expressed. Initially, they concerned only individual petrographic groups, such as carbonate and magnetite-bearing rocks, which were attributed to endogenous (magmatic) origin. Later, an opinion was expressed about the nonstratigenic origin of the entire “Bug Series”, and some authors propose to abandon the dismemberment of the Early Precambrian granulite complexes into suites altogether. These ideas are based only on the materials of the study of local objects obtained by drilling and geophysical methods, and they do not take into account the results of regional geological and stratigraphic studies. Simultaneously with new ideas about the genesis of the “Bug series”, an attempt is being made to link its origin with faults and to revise its age.
In order to discuss the problem of the “Bug series”, a series of publications has been prepared, presenting the main generalizations of many years of regional geological and thematic studies on the composition, structure, stratigraphic and structural position of the units belonging to the “Bug series”. The cycle consists of three separate articles. The first article characterizes the composition of subdivisions and rock associations included in the “Bug series” in the current Precambrian stratigraphic scheme of the Ukrainian Shield. In this second article of the cycle, ideas about the structural position of the “Bug series” and its subdivisions are considered. For a long time there was an opinion that the “Bug series” performed synclines “superimposed” on the ancient foundation. These ideas we-re convincingly refuted more than half a century ago on the example of the stratotype section of the Bug series in the area of Zavallia [Vinogradov, 1970], but sometimes some researchers still adhere to them. The data presented in this article indicate that all units that now belong to the “Bug series” are suites and strata that are part of a single Bug Area granulite complex and occupy a clearly defined stratigraphic and structural position in its section. Ideas about the connection of the “Bug series” with “superimposed” synclines or faults do not have any reliable justification.
Babkov, Yu.B., Bulaevskij, D.S., Zajcev, D.S., Kiktenko, V.F., Kozlovskaya, A.N., Kolosovskaya, V.A., Konkov, G.G., Kudelya, V.A., Lebedev, M.I., Pastuhov, V.G., & Polunovskiy, R.M. (1970). Stratigraphic Scheme of Precambrian formations of the Ukrainian shield. Geologicheskiy Zhurnal, (4), 139—148 (in Ukraine).
Belevtsev Ya.N., Epatko Yu.M., Verigin M.I., Lebedev Yu.S., Malyutin E.I. Precambrian iron ore deposits of Ukraine and their predictive assessment. Kyiv: Nauk. Dumka, 1981. 232 p.
Bogatyrev, V.F., Bondareva, N.M., Ionis, G.I., & Polovko, N.I. (1978). Zavalevsky-Tashlyk province. In Iron-siliceous formations of the Ukrainian shield (Vol. 1, pp. 230—252). Kiev: Naukova Dumka (in Russian).
Vinogradov, G.G. (1970). About the genesis of the pyroxene gneisses and some questions of stratigraphy of the Precambrian Middle Bug Area. In Petrography of the Precambrian of the Russian platform (pp. 352—357). Kiev: Naukova Dumka (in Russian).
Yershov, V.A., & Semenenko, N.P. (Eds.). (1958). Geology of the USSR. Vol. 5. Ukrainian SSR and Moldavian SSR. P. I. Geological description of platformpart. Moscow: Gosgeoltehizdat, 1000 p. (in Russian).
Gintov, O.V., Entin, V.A., Mychak, S.V., Pavlyuk, V.N., & Guskov, S.I. (2018). Unique basite-metabasite structures of the Pobuzhsky ore mining region, their geological significance and ore-bearing prospects (by geophysical and geological data). Geofizicheskiy Zhurnal, 40(3), 3—26. https://doi.org/10.24028/gzh.0203-3100.v40i3.2018.137170 (in Russian).
Gintov О.V., Entin, V.A., Mychak, S.V., & Farfuliak, L.V. (2020). The Bug mining area of the Ukrainian shield. Structural-petrophysical map of the crystalline basement and some problems of the Early Precambrian geology. Geofizicheskiy Zhurnal, 42(3), 16—46. https://doi.org/10.24028/gzh.0203-3100.v42i3.2020.204699 (in Russian).
Discussion on questions of Precambrian stratigraphy of the Ukrainian shield. (1970). Geologicheskiy Zhurnal, (4), 135—138 (in Ukrainian).
Drevin, A.Ya. (1967). Experience of the Precambrian study of the Middle Bug River on the basis of the lithological-structural method. In Problems of Precambrian sedimentary geology (Vol. 2, pp. 8896). Moscow: Nedra (in Russian).
Drevin, A.Ya. (1966). Structure, stratigraphy of the Middle Bug region and search criteria for silicate nickel. Extended abstract of candidate’s thesis. Kiev, 23 p. (in Russian).
Entin, V.A., Gintov, O.V., Myschak, S.V., & Yushin, A.A. (2015). The structure of the Moldovan iron ore deposit (The Ukrainian shield) according to geological-geophysical data and its possible endogenous nature. Geofizicheskiy Zhurnal, 37(4), 318. https://doi.org/10.24028/gzh.0203-3100.v37i4.2015.111118 (in Russian).
Map of geological formations of the Precambrian Ukrainian shield. 1:500000. Explanatory note. (1991). Kirilyuk V.P., Koliy V.D., Lashmanov V.I., Lysak A.M., Paranko I.S., Pashchenko V.G., Sveshnikov K.I., Sivoronov A.A., Smogolyuk A.G., Yatsenko G.M. with the participation of Berzenin B.Z. Kyiv: State Committee for Geology of Ukraine, TsTE, 115 p. (in Russian).
Kirilyuk, V.P. (2020). On some aspects of the study of age ratios of rock complexes of the Ukrainian Shield. Geofizicheskiy Zhurnal, 42(2), 108—137. https://doi.org/10.24028/gzh.0203-3100.v42i2.2020.201745 (in Russian).
Kyrylyuk, V.P. (2022). About the so-called «Bug series» of the Middle Bug region (Ukrainian shield). Article 1. The evolution of views and the composition of the «Bug series». Geofizicheskiy Zhurnal, 44(4), 155—170. https://doi.org/10.24028/gj.v44i4.264846 (in Ukrainian).
Kirilyuk, V.P. (2010). The Bug Area granulite complex. In Granulite structural and formation complexes of the Ukrainian Shield — European standard (pp. 8—63). Lvov: ZUKC (in Russian).
Kirilyuk, V.P. (1982). Stratigraphy of Precambrian of western part of the Ukrainian shield. Article 1. Stratigraphic complexes of Precambrian and formations of Early Archean. Geologicheskiy Zhurnal, (3), 88—103 (in Russian).
Kirilyuk, V.P., Lysak, A.M., Sveshnikov, & K.I. (1979). Guidelines for Mapping Formations of the Early Precambrian of Ukraine (for the purposes of geological mapping and metallogenic forecasting). Kyiv, 178 p. (in Russian).
Koval, V.B., & Shcherbakov, I.B. (1972). Khashchuvat-Zavala complex of the Middle Pobuzhzhya. In Stratigraphy of the URSR. Precambrian (Vol. 1, pp. 117—121). Kiev: Naukova Dumka (in Russian).
Yesypchuk, K.Yu., Bobrov, O.B., Stepanyuk, l.M., Shcherbak, M.P., Glevaskiy, E.B., Skobelev, V.M., Drannik, V.S., & Geichenko, M.V. (Eds.). (2004). Correlated chronostratigraphic scheme of Early Precambrian of the Ukrainian Shield (scheme and explanatory note). Kyiv: NSC Ukraine, UkrSGRI, 30 p. (in Ukrainian).
Lazko, E.E. (1983). Graphite-bearing formations of the Pobuzh metamorphic complex. In Stratigraphy and formations of the Precambrian of Ukraine (pp. 71—88). Kyiv: Naukova Dumka (in Russian).
Lazko, E.M., Kirilyuk, V.P., Lysak, A.M., Sivoronov, A.A., & Yacenko, G.M. (1986). Lower Precambrian stratigraphic scheme of the Ukrainian shield (on formational basis). Geologicheskiy Zhurnal, 46(2) 18—26 (in Russian).
Lazko, E.M., Kyrylyuk, V.P., Sivoronov, A.A., & Yacenko, G.M. (1975). Lower Precambrian of the western part of the Ukrainian shield. Age complexes and formations. Lvov: Vischa shkola, 239 р. (in Russian).
Lashmanov, V.I. (1981). New data on the stratigraphy of the condalite formation of the Zaval’evskaya structure (Ukrainian shield). Kyiv: Depositor No. 2837, 26 p. (in Russian).
Lysak, A.M., Pashchenko, V.G., & Zyultsle, V.V. (1983). Formation affiliation and stratigraphic position of iron-siliceous formations of the Pavlovskaya group of magnetic anomalies (Middle Bug region). Geologicheskiy Zhurnal, 43(5), 99—109 (in Russian).
Stratigraphic schemes of Precambrian and Phanerozoic formations of the Ukrainian shield for geological maps of scale I:50,000 (1:25,000). Explanatory note. (1986). Kiev, 123 p. (in Russian).
Tectonic map of Ukraine. 1:1 000 000. Ch. I. Explanatory note. (2007). Performers S.S. Kruglov, Yu.O. Arsiriy, V.Ya. Velikanov, T.O. Znamenska, A.M. Lysak, O.E. Lukin, I.K. Pashkevich, I.V. Popadyuk, A.Ya. Radziwill, A.B. Cold ones. Kyiv: UkrDGRI, 96 p. (in Ukrainian).
Tkachuk, L.H. (1940). Gaivoron-Zaval complex of charnokyto-noritic rocks and associated chromites. Kyiv: Publ. of the Academy of Sciences of the Ukrainian SSR, 58 p. (in Ukrainian).
Usenko, O.V. (2019). To the problem of origin of the Bug series rocks. Geofizicheskiy Zhurnal, 41(4), 60—76. https://doi.org/10.24028/gzh.0203-3100.v41i4.2019.177365 (in Russian).
Usenko, O.V. (2015). Conditions of formation of ferruginous rocks of the Middle Bug area. Geofizicheskiy Zhurnal, 37(4), 32—50. https://doi.org/10.24028/gzh.0203-3100.v37i4.2015.111122 (in Russian).
Shcherbak, N.P., Esipchuk, K.E., Berzenin, B.3., Glevasskiy, E.B., Drannik, A.S., Piyar, Yu.K., Polunovskiy, R.M., Skarzhinskaya, T.A., Solovitskiy, V.N., Etingof, I.M., Bilynskaya, Ya.P., Ganotskiy, V.I., Guzenko, G.F., Kiselev, A.S., Klochkov, V.M., Reshetnyak, V.V., Bosaya, N.I., Voronova, G.S., & Pilipenko, V.I. (1985). Stratigraphic sections of the Precambrian of the Ukrainian shield. Kiev: Naukova Dumka, 168 p. (in Russian).
How to Cite
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).