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Kovalevsky, A.F., Fast, V.G., Ikonnikova, G.M. and Nekrasova, L.N. (1963) Magnetic investigations at the region of fall of the Tunguska meteorite. In: Plekhanov, G.F., Ed., The Problem of the Tunguska Meteorite, Izdat Tomsk University, Tomsk, 113-123.

has been cited by the following article:

• TITLE: The descent of pieces of the Tunguska cosmic body

  AUTHORS: Olga G. Gladysheva

  KEYWORDS: Tunguska Cosmic Body; Craters;Organic Component

  JOURNAL NAME: Natural Science, Vol.5 No.5, May 28, 2013

  ABSTRACT: There is a hypothesis that fragments of a body from outer space fell to Earth as a result of the Tunguska event. During decades of investigations at the site of the disaster, stone or iron pieces from a cosmic body were not found. In spite of this, the number of adherents of this hypothesis is growing. For one thing, it was determined that the formation of swamp craters at the epicentre of the disaster is contempory with the Tunguska event. Secondly, it was proven that the swamp craters are the result of thermokarst processes: their formation is connected with heat exchange in a permafrost zone. Now we can affirm that fragments of the Tunguska cosmic body (as a comet) with a mass of 10-3 ≤ M ≤ 10 kg reached the Earth’s surface, but they did not form craters. This conclusion was made from the isotopes and composition of element in peat deposits as determined by Kolesnikov’s group and L’vov.