The study of volcanic-sedimentary rocks of the Dzykhra sequence within the Abkhazian zone of the Gagra-Java uplift, Northwestern Caucasus

Cover Page

Cite item

Full Text

Abstract

The authors discuss the results of studying the composition of the volcanogenic-sedimentary rocks of the Dzykhra sequence, which come to the surface in the upper reaches of the river Bolshaya Khosta (Khostinsky district, Krasnodar territory). In the rocks of the Cretaceous age of the Akhun series, composed of limestones of the Dzykhra sequence and the Kazachy Brod suite, an outcrop of clastic rocks was found. The structure and mineral composition of the rock sample, as well as its chemical composition according to X-ray fluorescence analysis, were studied in detail. In the sequence, two layers are distinguished: the lower (3 m) cream-brown and the upper (0.05 m) green. Macroscopically, it is a lenticular-layered, fine-grained, lithocrystal-clastic, polymictic sandstone with carbonate cement. The sequence is underlain by interbedded dark gray limestones and black siltstones of the Lower Cretaceous Agur Formation, and overlain by cream limestones with interlayers of brown cherts of the Upper Cretaceous Kazachy Brod Formation. The data of microscopic studies, as well as X-ray fluorescence analysis, made it possible to establish the following minerals in the composition of sandstones: quartz, potassium-feldspar and plagioclase, less often amphibole, as well as a large amount of carbonate matter, and to conclude that in composition they correspond to tuffs of medium composition (andesite-dacite).

About the authors

Elena V. Karelina

Peoples’ Friendship University of Russia (RUDN University)

Author for correspondence.
Email: karelina-ev@rudn.ru
ORCID iD: 0000-0002-0929-4290

PhD of Geology, Associate Professor of the Department of Mineral Developing and Oil & Gas Business, Academy of Engineering

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

Ivan S. Motuzov

Peoples’ Friendship University of Russia (RUDN University)

Email: motuzov-is@rudn.ru
ORCID iD: 0000-0002-2688-7629

senior lecturer, Department of Mineral Developing and Oil & Gas Business, Academy of Engineering

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

Vladimir E. Markov

Peoples’ Friendship University of Russia (RUDN University)

Email: markov-ve@rudn.ru
ORCID iD: 0000-0001-6594-0763

senior lecturer, Department of Mineral Developing and Oil & Gas Business, Academy of Engineering

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

Yuri N. Panasenko

Central Geological Research Institute for Nonferrous and Precious Metals

Email: panasenko1997.97@mail.ru
ORCID iD: 0000-0002-5799-3723

lead engineer

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

Natalya V. Zhorzh

Peoples’ Friendship University of Russia (RUDN University)

Email: zhorzh-nv@rudn.ru
ORCID iD: 0000-0003-2839-8439

senior lecturer, Department of Mineral Developing and Oil & Gas Business, Academy of Engineering

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

Olga V. Nosaeva

Peoples’ Friendship University of Russia (RUDN University)

Email: nosayeva-ov@rudn.ru
ORCID iD: 0000-0003-0045-4750

senior lecturer, Department of Mineral Developing and Oil & Gas Business, Academy of Engineering

6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation

References

  1. Alexandrov GP, Ganeshin GS, Zaitsev IK, Ilyin KB, Sokolov RI, Shaposhnikov GN, Yakubasova EG, Maymin YS. Geological Map of the USSR. Scale 1: 1,000,000 (new series). Explanatory note. Sheet K-(37), (38). Tbilisi. Moscow, Leningrad; 1986. (In Russ.)
  2. Lavrishchev VA, Sheikov AA, Andreev VM, Semenov VM. State Geological Map of the Russian Federation. Scale 1: 1,000,000 (third generation). The Scythian series. List K37 (Sochi), K38 (Makhachkala), K39. Explanatory note. St. Petersburg: VSEGEI Publ.; 2011. (In Russ.)
  3. Trikhunkov YaI, Zelenin EA, Kolesnichenko AA. Report on the project “The latest tectonics as a source of dangerous geodynamic processes in the North-West Caucasus (on the example of key sites)”. 2015. (In Russ.) Available from: http://neotec.ginras.ru/results/Res_2015_09.pdf (accessed: 14.08.2022).
  4. Lavrishchev VA, Semenukha IN, Andreev VM, Gorshkov AS. Explanatory note to the State Geological Map of the Russian Federation M 1: 200,000. Second edition. Caucasian series. Sheet K-37-IV (Sochi). St. Petersburg: St. Petersburg: VSEGEI Publ.; 2000. (In Russ.)
  5. Andreev VM. Stratigraphic scheme of the Black Sea coast of the Caucasus. In: Pinchuk TN. (ed.) Geology and Biodiversity of Mesozoic-Cenozoic Deposits of Southern Russia: Materials of the All-Russian Scientific and Practical Conference, 20–24 July 2015. Goryachy Klyuch; 2015. (In Russ.)
  6. Andrushchuk VL, Dubinsky AYa, Khain VE. Geology of the USSR. Vol. IX. The North Caucasus. Part I. Geological description. Moscow: Nedra Publ.; 1968. (In Russ.)
  7. Karelina EV, Markov VE, Blokov VI. Prospects of the Krasnopolyansky district of Sochi for noble metal mineralization. RUDN Journal of Engineering Research. 2017;18(4):497–504. (In Russ.) https://doi.org/10.22363/2312-8143-2017-18-4-497-504
  8. Meisner AL. The main faults of the Shatsky shaft and their influence on the formation of the structure of the Eastern Black Sea region. Bulletin of the Moscow University. Series 4: Geology. 2009;(4):14–19. (In Russ.)
  9. Kushnareva AV, Moskalenko AN. Reconstruction of parameters of stress states of the Chvezhipsin, Abkhazian, Krasnopolyansk zones of the North-West Caucasus. Modern Tectonophysics. Methods and Results: Materials of the Fifth Youth Tectonophysical School-Seminar. Moscow: IFZ Publ.; 2017. (In Russ.)
  10. Aukhatov YaG. Thrust movements and oil content of Cretaceous deposits (Western Siberia, Crimea). In: Baraboshkin EY. (ed.) The Cretaceous system of Russia and the near abroad: Problems of Stratigraphy and Paleogeography: Collection of Scientific Works. Simferopol: Chernomorpress Publ.; 2016. (In Russ.)
  11. Gamkrelidze PD. Tectonics. Geology of the USSR. Vol. X. Georgian SSR. Geological Description. Moscow: Nedra Publ.; 1964. p. 453–491. (In Russ.)
  12. Muratova MV. History of development of vegetation and climate of south-eastern Chukotka in the Neogene-Pleistocene. Moscow. Nauka Publ.; 1973. (In Russ.)

Copyright (c) 2022 Karelina E.V., Motuzov I.S., Markov V.E., Panasenko Y.N., Zhorzh N.V., Nosaeva O.V.

License URL: https://creativecommons.org/licenses/by-nc/4.0/legalcode

This website uses cookies

You consent to our cookies if you continue to use our website.

About Cookies