Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2023

Идентификатор DOI: 10.1134/S1028334X23600044

Ключевые слова: Tunguska event, lake sediments, bathymetry, seismic reflection, sedimentation rate

Аннотация: The bottom morphology and thickness of bottom sediments of Zapovednoye and Peyungda lakes, which were located on the territory of the Tunguska State Nature Reserve, were studied by echo-sounding and seismic reflection profiling. The lakes are situated at a distance of 50 and 60 km, respectively, from the supposed epicenter of the blast of the Tunguska Event—a massive explosion of unknown nature that occurred in 1908. It is revealed that both lakes have a circular shape and funnel-like morphology with depths of 60 and 34 m, respectively. They are similar in shape and size to Cheko Lake, which, according to some researchers, is a trace of the fall of a celestial body as a result of the Tunguska Event. Previously, the unusual shape of Cheko Lake was assumed to be unique to the area. This fact was one of the main arguments in favor of its impact origin. With the example of Zapovednoye and Peyungda lakes, we showed that the shape of Cheko Lake is not unique to this area; the age of the bottom sediments of Zapovednoye and Peyungda lakes exceeds several thousand years. The similarity of the shape of these three lakes and their location in river channels indicate their common origin and testify against the hypothesis about the impact origin of Cheko Lake as a result of the Tunguska Event of 1908.

Журнал: Doklady Earth Sciences

Выпуск журнала: Т.510, №1

Номера страниц: 307-311

ISSN журнала: 1028334X

Место издания: Москва

Издатель: Pleiades Publishing, Ltd. (Плеадес Паблишинг, Лтд)

• Rogozin D.Y. (Siberian Federal University)
• Krylov P.S. (Kazan Federal University)
• Dautov A.N. (Kazan Federal University)
• Darin A.V. (Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences)
• Kalugin I.A. (Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences)
• Meydus A.V. (Krasnoyarsk State Pedagogical University named after V.P. Astafyev)
• Degermendzhy A.G. (Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of Science)

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