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Geography and Natural Resources

, Volume 39, Issue 1, pp 33–38 | Cite as

New Evidence on the Relief of the Southern Underwater Slope in the South Baikal Basin

  • O. M. Khlystov
  • E. E. Kononov
  • H. Minami
  • A. V. Kazakov
  • A. V. Khabuev
  • N. A. Gubin
  • A. G. Chenskii
Research in the Baikal watershed

Abstract

A high-resolution bathymetric survey of the entire underwater slope in South Baikal was carried out for the first time by means of the multibeam echosounder. New elements were revealed in the underwater relief of the southern slope of the basin from the Kultuchnaya river to the Mysovka river, and a relevant regionalization was carried out into three areas according to the presence of ancient landforms and the intensity of the processes of their reworking, with the boundaries along the delta-front and the river fan of the Utulik and Pereemnaya. We reconstructed the formation process of the modern relief of this area of the underwater slope and determined a dominant role of the underwater-erosion processes in the formation of the modern relief, with the tectonic movements served as the “trigger” for them. The study revealed a direct correlation between the reworking of the ancient geomorphological surfaces and the occurrence of separate large underwater elevations or group ridges (remnants), canyons and linear depressions. It is determined that the pivotal role in the appearance of the modern relief of the underwater slope in the second area of extensive plano-convex (in section) and fan-shaped (in plan) delta-fronts of large rivers and debris fans enveloping the remnants. The existence of a steep underwater slope from the mouth of the Pereemnaya to the mouth of the Bol’shaya Tel’naya and of two large benches, and also the proximity of the maximum depths of the southern basin at the foot of this slope are explained by a more intense step-like lowering of this part of the lake when compared with the western part of the basin. This also accounts for the absence of large remnants in this part of the slope. The area of occurrence of lacustrine-fluvial and lacustrine-delta deposits of the Tankhoi paleobasin within the southern basin of Baikal is reconstructed. Four new hydrate-bearing structures associated with these deposits and morphologically pronounced in the vertex parts of the remnants were discovered. The morphological exploration indicators of the presence of new accumulations of gas hydrates on the underwater slopes of Baikal have been expanded.

Keywords

Baikal underwater relief delta-front mapping paleoreconstruction gas hydrates 

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References

  1. 1.
    Buzo, S., First Researchers of the Depths of Baikal. URL: http://www.magicbaikal.ru/history/first-researchers-ofbaikal-death.htm (Accessed 6.27.2016) [in Russian].Google Scholar
  2. 2.
    Khlystov, O.M., Kononov, E.E., Khabuev, A.V., Belousov, O.V., and Naudts, L., Geological and Geomorphological Characteristics of the Posolsky Bank and the Kukuy Griva, Lake Baikal, Russ. Geol. Geophys., 2016, vol. 57, issue 12, pp. 1759–1767.CrossRefGoogle Scholar
  3. 3.
    Hutchinson, D.R., Golmshtok, A.Ya., Zonenshain, L.P., Moore, T.C., Scholz, C.A., and Klitgord, K.D., Characteristics of the Sedimentary Layer Structure in Lake Baikal From Multichannel Seismic Survey Data, Geol. Geofiz., 1993, vol. 34, nos. 10–11, pp. 25–36 [in Russian].Google Scholar
  4. 4.
    Moore, T.C., Jr., Weber, E., Klitgord, K.D., and Golmshtok, A.J., Sedimentation and Patterns in the Central and North Basins of Lake Baikal From Seismic Stratigraphy, Bull. Geol. Soc. Amer., 1997, vol. 109, no. 6, pp. 746–766.CrossRefGoogle Scholar
  5. 5.
    Scholz, C.A. and Hutchinson, D.R., Stratigraphic and Structural Evolution of the Selenga Delta Accommodation Zone, Lake Baikal Rift, Siberia, Int. J. Earth Sci., 2000, vol. 89, issue 2, pp. 212–228.CrossRefGoogle Scholar
  6. 6.
    Kuz’min, M.I., Karabanov, E.B., Kawai, T., Williams, D., Bychinskii, V.A., Kerber, V.E., Kravchinskii, V.A., Bezrukova, E.V., Prokopenko, A.A., Geletii, V.F., Kalmychkov, G.V., Goreglyad, A.V., Antipin, V.S., Khomutova, M.Yu., Soshina, N.M., Ivanov, E.V., Khursevich, G.K., Tkachenko, L.L., Solotchina, E.P., Yoshida, N., and Gvozdkov, A.N., Deep Drilling on Lake Baikal: Main Results, Geol. Geofiz, 2001, vol. 42, nos.1–2, pp. 8–34 [in Russian].Google Scholar
  7. 7.
    Batist, M., de, Rensbergen, P., van, Vanneste, M., Poort, J., Klerkx, J., Golmshtok, A., Kremlev, A.N., Khlystov, O.M., and Krinitsky, P., Active Hydrate Destabilization in Lake Baikal, Siberia? Terra Nova, 2002, vol. 14, issue 6, pp. 436–442.CrossRefGoogle Scholar
  8. 8.
    Suvorov, V.D. and Mishen’kina, Z.R., Structure of Sedimentary Cover and Basement Beneath the Southern Basin of Lake Baikal From Seismic Profiling, Geol. Geofiz., 2005, vol. 46, no. 11, pp. 1159–1167 [in Russian].Google Scholar
  9. 9.
    Naudts, L., Khlystov, O., Granin, N., Chensky, A., Poort, J., and Batist, M., de, Stratigraphic and Structural Control on the Distribution of Gas Hydrates and Active Gas Seeps on the Posolsky Bank, Lake Baikal, Geo Mar. Lett., 2012, vol. 32, issue 5–6, pp. 395–406.CrossRefGoogle Scholar
  10. 10.
    Cuylaerts, M., Naudts, L., Casier, R., Khabuev, A.V., Belousov, O.V., Kononov E.E., Khlystov, O., and Batist, M., de, Distribution and Morphology of Mud Volcanoes and Other Fluid Flow-Related Lake-Bed Structures in Lake Baikal, Russia, Geo Mar. Lett., 2012, vol. 32, issue 5–6, pp. 383–394.CrossRefGoogle Scholar
  11. 11.
    Logachev, N.A., Lithology of Tertiary Deposits in the Southwestern Part of the Baikal Rift Zone, Moscow: Nauka, 1972 [in Russian].Google Scholar
  12. 12.
    Mats, V.D., Ufimtsev, G.F. and Mandel’baum, M.M., The Cainozoic of the Baikal Rift Valley. Structure and Geological History, Novosibirsk: Geo, 2001 [in Russian].Google Scholar
  13. 13.
    Mashchuk, I.M. and Akulov, N.I., Oligocene Deposits of the Baikal Rift valley, Russ. Geol. Geophys., 2012, vol. 53, issue 4, pp. 356–366.Google Scholar
  14. 14.
    Rasskazov, S.V., Lyamina, N.A., Luzina, I.V., Chernyaeva, G.P., and Usol’tseva, M.V., Deposits of the Tankhoi Tertiary Field, South Baikal Basin: Stratigraphy, Correlation and Structural rearrangements in the Baikal Region. 2014. URL: http://gt.crust.irk. ru/jour/issue/view/10/showToc] (Accessed 12.10.2016) [in Russian].Google Scholar
  15. 15.
    Khlystov, O.M., Kononov, E.E., Minami, H., Kazakov, A.V., Khabuev, A.V., Gubin, N.A., Chenskii, D.A., Chenskii, A.G., and Suturin, A.N., Topography and Genesis of the Murinskaya Banka Underwater Upland (Southern Baikal), Geogr. Prir. Resur., 2016, Special Issue (no. 5), pp. 109–116 [in Russian].Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • O. M. Khlystov
    • 1
  • E. E. Kononov
    • 1
    • 2
  • H. Minami
    • 3
  • A. V. Kazakov
    • 1
    • 2
  • A. V. Khabuev
    • 1
  • N. A. Gubin
    • 4
  • A. G. Chenskii
    • 4
  1. 1.Limnological Institute, Siberian BranchRussian Academy of SciencesIrkutskRussia
  2. 2.V. B. Sochava Institute of Geography, Siberian BranchRussian Academy of SciencesIrkutskRussia
  3. 3.Kitami Institute of TechnologyHokkaidoJapan
  4. 4.Irkutsk National Research Technical UniversityIrkutskRussia

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