The question about the chemical composition and nature of the Tunguska cosmic body
Abstract
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.
- Publication:
-
Astronomicheskii Vestnik
- Pub Date:
- January 1978
- Bibcode:
- 1978AVest..11..126G
- Keywords:
-
- Comets;
- Meteoritic Composition;
- Mineralogy;
- Tungusk Meteorite;
- Carbonaceous Chondrites;
- Chemical Composition;
- Dust;
- Neutron Activation Analysis;
- Spectroscopic Analysis;
- Vertical Distribution;
- Volatility;
- Lunar and Planetary Exploration