The Characteristics of Gas-Saturated Deposits of the Kandalaksha Bay, the White Sea, According to Seismoacoustic and Lithogeochemical Studies
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This paper discusses the results of comprehensive geological, geophysical, and geochemical studies of gas-saturated sediments within the Kandalaksha Bay, the White Sea. The marine study involved detailed seismoacoustic surveys that yielded data on seabed geometry and the geological structure of the sedimentary cover, including the zones of focused unloading of hydrocarbon fluids. Assemblages of gas caps are confined to the zones with a maximum thickness of postglacial sediments. The composition of organic matter in the sediments and the gas phase has been studied in detail.
Keywords:Kandalaksha Bay White Sea seismoacoustic survey gas-saturated deposits bottom sampling geochemical survey and hydrocarbon gases
The work was carried out under the Development of Software and Hardware Systems for Prospecting, Exploration, Geophysical and Geochemical Monitoring of the Development of Hydrocarbon Deposits, Including Those Located in the Hard-to-Reach Regions under Extreme Climatic Conditions project with the financial support of the Ministry of Education and Science of the Russian Federation. Agreement on Granting of Subsidies no. 14.607.21.0187 dated September 26, 2017 (unique ID RFMEFI60717X0187).
- 1.Hovland, M. and Judd, A.G., Seabed Pockmarks and Seapages. Impact on Geology, Biology and the Marine Environment, Graham & Trotman, 1988.Google Scholar
- 3.Lisitzin, A.P., Nemirovskaya, I.A., Shevchenko, V.P., and Vorontsova, V.G., Sistema Belogo morya. T. IV. Protsessy osadkoobrazovaniya, geologiya i istoriya (System of the White Sea. Vol. IV. Sedimentation Processes, Geology and History), Moscow: Nauchn. Mir, 2017.Google Scholar
- 4.Mashtakov, A.S., Assessment of complex affect of cyclical influence and subsurface non-associated gas on ground bearing capacity, ISJAEE, 2013, no. 11 (133), pp. 33–36.Google Scholar
- 5.Mironyuk, S.G., Taking into account paleogeographic conditions for engineering surveys on the shelf of 26 Russian Arctic west sector, Eng. Surv., 2015, no. 7, pp. 28–38.Google Scholar
- 6.Mironyuk, S.G. and Otto, V.P., Gas-saturated sea grounds and natural outgassing of hydrocarbons: rules of expansion and risks for artificial assemblies, GeoRisk, 2014, no. 2, pp. 8–18.Google Scholar
- 7.Shalaeva, N.V. and Starovoitov, A.V., Osnovy seismoakustiki na melkovodnykh akvatoriyakh (Fundamentals of Seismic Acoustics in Shallow Seas), Moscow: Mosk. Gos. Univ., 2010.Google Scholar
- 8.Tokarev, M.Yu. and Pirogova, A.S., Estimation of elastic properties of gas-bearing near-surface sediments by ultra-high-resolution deep-towed seismoacoustic profiling. Kandalaksha Gulf, White Sea, Seism. Surv. Technol., 2015, no. 3, pp. 66–74.Google Scholar