Accumulation and degassing of the earth in the light of current isotopic data

Details Accumulation and degassing of the earth in the light of current isotopic data Accumulation and degassing of the earth in the light of current isotopic data

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980geokh......335t&link_type=abstract

Geokhimiia, Mar. 1980, p. 335-350. In Russian.

Computer Science

Degassing, Earth Environment, Geochemistry, Planetary Evolution, Accumulations, Helium Isotopes, Protoplanets, Volatility

Scientific paper

Current isotopic cosmogeochemistry and chronometry show that the silicate material of the earth has a nonchondritic composition, but the volatile components indicate an accumulation of a chondritic material. The accumulation rate of the planets was probably high, and intensive heating and differentiation took place; in the earth's interior the juvenile volatiles were preserved. It was shown that these contradictions can be resolved with a model of a heterogeneous earth which assumes that volatiles were buried under the accumulation of an iron-nickel protocore; such a scheme is in accordance with the presence of atmospheres on the planets with iron cores and with the absence of the volatiles in the silicate moon.

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