Abstract
The paper presents data obtained during the 69th and 72nd expeditions of the research vessel Akademik Mstislav Keldysh (2017, 2018). A mechanism of methane discharge that explains the localization of the seep fields in a limited area of the outer shelf and suggesting a system of deep and surface faults is proposed. Along the deep faults, gas fluid is transferred to the upper strata of the sedimentary cover, where it is accumulated below the gas hydrate stability zone and the permafrost horizon. The surface faults of the outer shelf break this caprock, creating conduits for the gas to migrate to the surface and to jet–release into the water column.
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REFERENCES
V. I. Yusupov, A. N. Salyuk, V. N. Karnaukh, et al., Dokl. Earth Sci. 430 (2), 261–264 (2010).
N. Shakhova, I. Semiletov, V. Sergienko, et al., Philos. Trans. R. Soc., A 373, 20140451 (2015).
S. S. Drachev, Geotectonics 34 (6), 467–481 (2000).
L. I. Lobkovskiy, S. L. Nikiforov, N. N. Dmitrevskiy, et al., Oceanology (Engl. Transl.) 55 (2), 283–290 (2015).
E. V. Shipilov, L. I. Lobkovskii, and M. V. Kononov, in Problems on Tectonics and Geodynamics of the Earth’s Crust and Mantle, Vol. 2: Proc. 50th Tecton. Conf. (GEOS, Moscow, 2018), pp. 336–341 [in Russian].
M. V. Flint, S. G. Poyarkov, and N. A. Rimsky-Korsakov, Oceanology (Engl. Transl.) 58 (2), 315–318 (2018).
A. L. Piskarev, Arctic Basin (Geology and Morphology) (All-Russ. Res. Inst. Geol. Miner. Resour. of the World Ocean Named after Academician Igor Gramberg, St. Petersburg, 2016) [in Russian].
P. V. Rekant and E. A. Gusev, Probl. Arkt. Antarkt., No. 2 (82), 85–94 (2009) [in Russian].
V. M. Anokhin and E. A. Gusev, in Herald of Tomsk State University, Application No. 3 (1): Proc. Sci. Conf. “Problems on Geology and Geography of Siberia” (Tomsk, 2003), pp. 21–23 [in Russian].
N. N. Romanovskii, A. A. Eliseeva, A. V. Gavrilov, et al., Kriosfera Zemli 10 (1), 29–38 (2006).
FUNDING
This work was supported by State Task no. 0149-2019-0005 for the Institute of Oceanology, Russian Academy of Sciences, Moscow, with the financial support of the Russian Foundation for Basic Research, project no. 18-05-60228 “The Arctic.”
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Translated by M. Hannibal
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Baranov, B.V., Lobkovsky, L.I., Dozorova, K.A. et al. The Fault System Controlling Methane Seeps on the Shelf of the Laptev Sea. Dokl. Earth Sc. 486, 571–574 (2019). https://doi.org/10.1134/S1028334X19050209
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DOI: https://doi.org/10.1134/S1028334X19050209