Russian researchers have questioned the hypothesis that the place where the Tunguska meteorite fell was Lake Cheko. The scientists shared their findings in the Reports of the Academy of Sciences.
The cause of the Tunguska event, which occurred in the Siberian taiga in 1908, is still not clear. The most common is the hypothesis of the fall of a cosmic body. Many researchers believe that the trace of the meteorite fall was Lake Cheko, located eight kilometers from the alleged epicenter of the explosion.
Russian scientists explained the structure of the bottom and bottom sediments of the Zapovednoye and Peyungda lakes, which are also located nearby. They found that the reservoirs were comparable in shape and depth to Lake Cheko – all round and funnel-shaped. Radiocarbon analysis of the bottom sediments showed the age of Zapovednoe to exceed two thousand years, seismoacoustic data indicate that the thickness of the Peyungda deposits corresponds to several thousand years, and the age of the Cheko is at least 300 years.
Thus, the age of all three lakes exceeds the age of the Tunguska event, and their location in the river beds indicates a common origin. Reservoirs are more likely to arise as a result of karst processes or the thawing of permafrost, said Denis Rogozin, one of the leading researchers at the Institute of Biophysics of KSC SB RAS.
Source: Ferra
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