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Information × Registration Number 0204U000738, 0101U000179 , R & D reports Title Evolution Earth mantle, crust and atmosphere on the date of cosmogeochemistry of noble gases popup.stage_title Head Stepanov Vladimir, Registration Date 20-02-2004 Organization Institute of environment geochemistry popup.description2 Behaviour of K-Ar isotopic system in three-reservoir model (the mantle, the crust, the atmosphere) has been simulated for the Earth's evolution assuming extensive catastrophic degasification at the early stage of its evolution under conditions of primary melted state of the matter, that distinguishes this model in principle from other modern hypotheses of the Earth's evolution. Several variants of evolution have been calculated with variable volumes and duration of catastrophic degasification and different ages of the Earth that allowed to calculate minimal possible amounts of potassium in the Earth's mantle and coefficients of potassium migration from the mantle into the crust as well as degasification of argon into the atmosphere. The models of Venus's and Mars's atmospheres formation have also been simulated that has explained the differences of their compositions correctly for the first time. Product Description popup.authors popup.nrat_date 2020-04-02 Close