The chemical composition of comet matter and its presumed role in the formation of the microelement composition of the outer shells of the earth
Abstract
On the basis of data concerning the Tunguska comet (1908) a high correlation is discovered between cometary microelement enrichment and that of terrestrial aerosol and sea water. An anomalously high enrichment of biosphere components in relation to earth sources is discovered and it is supposed that the cause is the fall of large amounts of finely dispersed matter of cometary origin into the earth's atmosphere over a period of more than 4 billion years which contributed 0.5-5.0% of the earth's mass. It is supposed that cometary matter had an active role in the formation of the microelement composition of the earth's crust, atmosphere, oceans and biosphere and that long-term evolution of cometary microelements created optimum conditions for life on earth.
- Publication:
-
Komety i Meteory
- Pub Date:
- 1980
- Bibcode:
- 1980KomMe..29...21G
- Keywords:
-
- Chemical Composition;
- Comets;
- Earth Crust;
- Planetary Evolution;
- Biosphere;
- Meteorite Craters;
- Tungusk Meteorite;
- Space Sciences (General)