Chemical composition and nature of the Tunguska cosmic body

Details Chemical composition and nature of the Tunguska cosmic body Chemical composition and nature of the Tunguska cosmic body

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977avest..11..126g&link_type=abstract

Astronomicheskii Vestnik, vol. 11, July-Sept. 1977, p. 126-136. In Russian.

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2

Comets, Meteoritic Composition, Mineralogy, Tungusk Meteorite, Carbonaceous Chondrites, Dust, Neutron Activation Analysis, Spectroscopic Analysis, Vertical Distribution, Volatility

Scientific paper

The chemical composition of the mineral section of the Tunguska cosmic body (from the 1908 disaster) is studied using samples from a mass deposit cover in the central region of the fall area. It is found that the chemical composition is similar to that of comets, having a predominance of low-melting and volatile elements. The substance of this assumed comet, and perhaps of other comets, is genetically tied to the substance of carbonaceous chondrites and of regular meteor streams, having a similar parental origin, and being a late product of successive differentiation in the protoplanetary cloud. Carbonaceous chondrites are not thought to be the products of the evolutionary degradation of comets.

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