LITHOLOGICAL AND MINERALOGICAL STRUCTURE OF ACCUMULATIVE BEACH DEPOSITS OF THE BLACK SEA DANUBE-DNIESTER SEGMENT

V. Nesterovskyi; M. Deiak; А. Tarnovetskyi

doi:10.17721/1728-2713.97.01

Authors

V. Nesterovskyi Taras Shevchenko National University of Kyiv, 90 Vasylkivska Str., Kyiv, 03022, Ukraine
M. Deiak SSI "MorGeoEkoCenter" of NAS of Ukraine, 55-b O. Honchara Str., Kyiv, 01054, Ukraine
А. Tarnovetskyi SSI "MorGeoEkoCenter" of NAS of Ukraine, 55-b O. Honchara Str., Kyiv, 01054, Ukraine

DOI:

https://doi.org/10.17721/1728-2713.97.01

Keywords:

Black Sea, beach deposits, granulometric composition, mineral composition

Abstract

The investigations of accumulative-sand deposits of the Black Sea coastline on the area from the village Liman (Katranka spit) to the village Karolina Bugaz (Odessa region) have been carried out. The length of the coastal line in the study area is close to 85 km. There are a lot of beach areas: spits, beach breaks, beaches on the shoreline. 35 samples were taken and analyzed from all types of beach depressions by the same methodology during the summer period. The sampling was carried out at all accessible for sampling places of beach deposits from the middle part of the near-shore beaches (between the water level and the shore) and at a distance of 5–7 m from the water edge on the headlands and spits in the period when there are no storms. For this purpose we used standard plastic containers with a capacity of 1 liter. The samples were taken from a depth of 30 cm from the surface with a stripping area of 30×30 cm. At each point the description of the coastal zone structure and the character of beach deposits were carried out, which were recorded in the logbook and were connected to the coordinates by GPS system. Granulometric and mineralogical analysis was carried out. It was determined that fractions 0,25–0,5 mm prevail in the granulometric composition among all types of beach deposits, which makes 66 %, and 0,1–0,25 mm – 30 %. In the smallest quantities there are coarsegrained and aleuro-pelitic fractions. The main places of localization of drilled-grained psammite and aleuropelite fractions are the areas with low influence of coastal tidal processes. However, during the periods of increased hydrodynamic activity (spring-autumn), additional resuspension of material takes place, which leads to displacement of other fractions from the deposits and their transfer to the sea side. Beach sediments are 90–95 % quartz. Others are calcite, feldspar, technogenic substances. Ore minerals are represented by magnetite, lignite spheroids, ilmenite, acerbic garnets, stavrolite, actinolite. The main sources of terrigenous material for the formation of beach deposits are the underwater bench, the Dniester river runoff, and coastal abrasion. Decisive in the distribution of sediments is the direction along the coastal current in the direction from Odessa city towards the delta of the Danube.

References

Andrusov, N.I. (1890). Preliminary report on participation in the Black Sea deep-sea expedition of 1890. Russian Geographical Society. Geography, 26(2), 380–400. [in Russian]

Andrusov, N.I. (1927). Paleogeography of the Black Sea region. Nature, 6. [in Russian]

Arkhangelsky, A.D., Strakhov V.M. (1938). Geological structure and history of the development of the Black Sea. L.: Report AN SSSR. [in Russian]

Barkovskaya, M.G. (1960). Regularities of the distribution of heavy minerals in the strip of the beach and on the shelf of the Soviet coast of the Black Sea. Riga. Proceedings of the Institute of Geology of the Latvian SSR, 71–82. [in Russian]

Barkovskaya, M.G. (1963). Some patterns of formation of industrial concentrations of heavy minerals in water bodies. Geology of ores. fields, 1, 50– 64. [in Russian]

Berlinsky, N.A. (2014). Some patterns of formation of suspended sediment fields in the mouth area of the Danube. Visnyk Odeskoho natsionalnoho universytetu: Heohrafichni ta heolohichni nauky, 19(1), 34–42. [in Russian]

Bondar, C., Blendea, V. (2000). Water and Sediment Transport by the Danube into the Black Sea during 1840–1995. IOC-BSRC Workshop "Black Sea Fluxes". Workshop Report No.145. Paris: UNESCO, 58–63.

Fedoronchuk, N.O. (2001). Litolohiia donnykh vidkladiv ta umovy formuvannia rozsypiv na Pivnichno-Zakhidnomu shelfi Chornoho moria. Extended abstract of Doctor's thesis (Geol.): 04.00.10. Kyiv. [in Ukrainian]

Gevorkyan, V.Kh., Pavlov, A.V., Mitin, L.I. et al. (1981). Underwater studies of the Kalamitskoe nodule field with the help of a deep-sea submersible. Report ASUSSR. Ser. B, 1, 6–9. [in Russian]

Jaoshvili, Sh. (2003). Rivers of the Black Sea. European Environment Agency, Technical Report, 71, 58. [in Russian]

Mikhailova, M.V. (1995). Formation of the protruding delta of the Kiliya branch and sediment balance at the mouth of the Danube. Water Resources, 22(4), 489–495. [in Russian]

Mitropolsky, A.Yu., Moiseeva, Ya.Ya. (1975). On the concentration of trace elements from sea water using chelate ion exchangers. Problems of Hydrogeology and Engineering Soil Science, 4, 171–175. [in Russian]

Murkalov, A.V., Nevedyuk, V.V. (2011). Sediments of sea beaches as an indicator of the current state of the bay-bar of the Dniester Estuary Black Sea coast. Visnyk Odeskoho natsionalnoho universytetu: Heohrafichni ta heolohichni nauky, 16(1), 34–45. [in Russian]

Nevessky, E.Ya. (1967). Sedimentation processes in the coastal zone of the sea. M.: Nauka. [in Russian]

Novikova, Z.T. (1973). Characteristic features and dynamics of the formation of terrigenous-mineralogical provinces of the north-west of the Black Sea. Oceanology, 13(2), 297–302. [in Russian]

Shnyukov, E.F., Inozemtsev, Yu.I., Lyalko, V.I. et al. (1983). Geology of the shelf of the Ukrainian SSR. Solid minerals. Kyiv: Naukova dumka. [in Russian] ГЕОЛОГІЯ. 2(97)/2022 ~ 13 ~ ISSN 1728-2713

Shnyukov, E.F., Ogorodnikov, V.I., Inozemtsev, Yu.I., Frantseva, I.A. (1981). Terrigenous-mineralogical zoning of modern sediments of the Black Sea shelf of the Ukrainian SSR. Report ASUSSR. Ser. B, 1, 42–45. [in Russian]

Shuisky, Yu.D. (1986). Problems of studying the balance of sediments in the coastal zone of the seas. Leningrad: Gidrometeoizdat. [in Russian]

Shuisky, Yu.D., Vykhovanets, G.V. (1989). Exogenous processes of development of accumulative coasts in the Northwestern part of the Black Sea. Moscow: Nedra. [in Russian]

Shuisky, Yu.D., Murkalov, A.B. (2012). Patterns of development of natural leaning one-slope beaches on the abrasion shores of the Black Sea. Visnyk Odeskoho natsionalnoho universytetu: Heohrafichni ta heolohichni nauky, 17( 3), 8–31. [in Russian]

Shuisky, Yu.D., Organ, L.V. (2017). The main patterns of development along the coastal sediment flow in the coastal zone of the Black Sea. Austriascience, 6, 4–8. [in Russian]

Strakhov, N.M. (1956). To the knowledge of diagenesis. Lviv: Lviv University, 3/4, 7–26. [in Russian]

Strakhov, N.M. (1965). Types of manganese accumulations in modern reservoirs and their significance for understanding the manganese-ore process. Lithology and minerals, 4. [in Russian]

Vykhovanets, G.V., Murkalov, A.B., Stoyan, A.A. (2014). Dynamic stability of the sizes of sandy beaches in the coastal zone of the Black Sea. Visnyk Odeskoho natsionalnoho universytetu: Heohrafichni ta heolohichni nauky, 19(1), 53–68. [in Russian]

Yurk, Yu.Yu., Kashkarov, I.F., Polkanov, Yu.A., Eremenko, G.K., Yalovenko, I.P. (1973). Diamonds of sandy deposits of Ukraine. Kyiv.: Naukova dumka. [in Russian]

Zelinsky, I.P., Korzhenevsky, B.A., Cherkez, E.A., Shatokhina, L.N., Ibragimzade, D.D., Tsokalo, N.S. (1993). Landslides of the northwestern coast of the Black Sea, their study and forecast. Kyiv: Naukova dumka. [in Russian]