Computer Science
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981geokh.....1763s&link_type=abstract
(Akademiia Nauk SSSR, Vsesoiuznyi Simpozium po Stabil'nym Izotopam v Geokhimii, 8th, Moscow, USSR, Nov. 11-14, 1980.) Geokhimiia
Computer Science
Atmospheric Composition, Carbonaceous Chondrites, Lithosphere, Primitive Earth Atmosphere, Rare Gases, Xenon Isotopes, Degassing, Earth Mantle, Geochemistry, Iron Meteorites, Subduction (Geology), Volatility
Scientific paper
The extent to which the isotopic composition of Xe in the earth's atmosphere is consistent with the generally accepted notion of chondrites as carriers of all volatile matter to the earth and with the idea of continuous degassing of the lithosphere is studies. From an analysis of data in the literature, it is found that the isotopic composition of atmospheric Xe differs from that of Xe in carbonaceous chondrites and is similar to the isotopic composition of iron meteorites. It is thought that atmospheric Xe was liberated during the accretion of the earth's iron-nickel core. The subsequent accretion of matter from carbonaceous chondrites led to the penetration of Xe having excess Xe-129 into the earth's mantle. This isotope is detected in noble gases and in certain mantle rocks. Some mantle rocks contain atmospheric Xe that was introduced into the mantle through subduction.
Min D. V.
Shukoliukov Iu. A.
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