F.A. Migurskii, A.V. Akhiyarov, M.V. Berbushenko
Vendian-Lower Cambrian saltless rock associations in Lebyazhinsky zone of Siberian Platform: conditions and causes of formation
DOI 10.31087/0016-7894-2020-2-47-57

Commercial hydrocarbon accumulations in Riphean, Vendian terrigenous and Upper Vendian-Lower Cambrian plays of the Lena-Tungussky Petroleum Province of the Siberian Platform are always found below the regional impermeable sequence that is the Early Cambrian thick salt-bearing carbonate regional seal. Therefore, investigation of the occurrence regularities of Lower Cambrian salts is an important geological task. Overestimation of the facies factor and underestimation of secondary
changes result in wrong conclusions, and this complicates regional exploration and prospecting for oil and gas. Invalidity of certain geological reconstructions is shown by the example of the Lebyazhinsky zone. Basing on the drilling data, seismic lines, and hydrogeochemistry materials, area of intensive leaching determined by faults is identified. The authors prove that Cambrian facies zonation in the area of the current Yenisei Ridge and its neighbourhood has the less complex nature and lower average number of permeable intervals. These facts confirm the well-known theory-based point of view on the Late Palaeozoic time of its occurrence in the current form.

Key words: Yenisei Ridge; Lebyazhinsky facies zone; Lebyazhinsky Formation; leaching.

For citation: Migurskii F.A., Akhiyarov A.V., Berbushenko M.V. Vendian-Lower Cambrian saltless rock associations in Lebyazhinsky zone of Siberian Platform: conditions and causes of formation. Geologiya nefti i gaza. 2020;(2):47–57. DOI: 10.31087/0016-7894-2020-2-47-57. In Russ.

References

1. Kalinko M.K. Solenakoplenie, obrazovanie solyanykh struktur i ikh vliyanie na neftegazonosnost' [Accumulation of salts, formation of salt structures and their impact on oil and gas potential]. Moscow: Nedra; 1973. 132 p. In Russ.
2. Fradkin G.S. Halmeic formations and petroleum potential of the Siberian Platform. Geologiya i Geofizika = Russian Geology and Geophysics. 2001;42(4):605–616. In Russ.
3. Zharkov M.A. Paleozoiskie solenosnye formatsii mira [Palaeozoic saline formations of the world]. Moscow: Nedra; 1974. 392 p. In Russ.
4. Grachevskii M.M., Berlin Yu.M., Dubovskii I.T., Ul'mishek G.F. Korrelyatsiya raznofatsial'nykh tolshch pri poiskakh nefti i gaza [Correlation of different facies beds in oil and gas exploration]. Moscow: Nedra; 1969. 299 p. In Russ.
5. Sukhov S.S. O roli fatsial'no-sedimentologicheskikh kriteriev v rekonstruktsii kembriiskikh paleobasseinov vostoka Sibirskoi platform [Role of facies and sedimentological criteria in reconstruction of Cambrian paleobasins in the east of the Siberian Platform]. In: Sovremennye problemy sedimentologii v neftegazovom inzhiniringe: tr. III Vserossiiskogo nauchno‐prakticheskogo sedimentologicheskogo soveshchaniya, 10–12 April 2017. Tomsk: Izd-vo TsPPS ND; 2017. pp. 209–214. In Russ.
6. Saraev S.V. Lithologic and facies characteristics of the Lower Cambrian Usolka Formation and its age analogs in the Cis-Yenisei sedimentary basin, West Siberia. Russian Geology and Geophysics. 2015;56(6):919–931. DOI: 10.1016/j.rgg.2015.05.008.
7. Gosudarstvennaya geologicheskaya karta Rossiiskoi Federatsii. 1 : 1 000 000 (tret'e pokolenie). Seriya Angaro-Eniseiskaya. List P-46 — Severo-Eniseiskii. Obyasnitel'naya zapiska [State geological map of Russian Federation. 1:1 000 000 (third generation). Angaro-Eniseisky series. Sheet P-46 – Severo-Eniseisky. Explanatory note]. St. Petersburg: Kartfabrika VSEGEI; 2010. 236 p.
8. Kochnev B.B., Karlova G.A. New data on biostratigraphy of the Vendian Nemakit-Daldynian stage in the southern Siberian platform. Stratigraphy and Geological Correlation. 2010;18(5):28–41. DOI: 10.1134/S0869593810050035.
9. Filippov Y., Saraev S.V., Korovnikov I.V. The Cambrian sediments of the Cis-Yenisei basin (West Siberia): Stratigraphy and correlation. Russian Geology and Geophysics. 2014;55(5–6):704–715. DOI: 10.1016/j.rgg.2014.05.013.
10. Krainov V.M., Shvets V.M. Gidrogeokhimiya [Hydrogeochemistry]. Moscow: Nedra; 1992. 463 p.
11. Mel'nikov N.V. Vend-kembriiskii solenosnyi bassein. (Stratigrafiya, istoriya razvitiya) [Vendian-Cambrian salt-bearing basin. (Stratigraphy, evolution history)] .Novosibirsk: Iz-vo SNIIGGiMS; 2017. 177 p. In Russ.
12. Belyaev S.U., Basharin A.K. Modern structure, evolution and petroleum potential of the zone of junction of the Siberian platform and West Siberian plate. Geologiya i Geofizika = Russian Geology and Geophysics. 2001;42(4):736–745. In Russ.
13. Bukaty M.B. Equilibrium between underground brines of the Tunguska basins and minerals of evaporate and terrigenous facies. Geologiya i Geofizika = Russian Geology and Geophysics. 1999;40(5):750–763. In Russ.
14. Melnikov N.V., Isaev A.V., Smirnov E.V., Naumova E.G., Dontsov M.V., Medyukhina L.V., Maslennikov M.A. Lower-middle Cambrian facies regionalization of the Podkamennaya and Nizhnyaya Tunguska interfluve. Geology and mineral resources of Siberia. 2014;19(3):3–7.

 

F.A. Migursky    iD 

Candidate of Geological and Mineralogical Sciences,

All-Russian Research Geological Oil Institute, Moscow, Russia;
fam@vnigni.ru

 

A.V. Akhiyarov

All-Russian Research Geological Oil Institute, Moscow, Russia;

akhiyarov@vnigni.ru

 

M.V. Berbushenko

All-Russian Research Geological Oil Institute, Moscow, Russia;

berbushenko@vnigni.ru