The results of studying the distributions of stable radiogenic and cosmogenic isotopes of noble gases in ordinary chondrites are reviewed here: the distributions of gas-retention and exposure ages are analyzed, the chronology and consequences of catastrophic destruction of the parent bodies of H and L chondrites are discussed, the fallen and preatmospheric masses of Antarctic and non-Antarctic meteorites are compared, the diffusion losses of noble gases in meteorites are considered, the ablation of meteorites and their mean lifetime after separation from the parent bodies are estimated, and a number of other problems are discussed.

The history of ordinary chondrites from the data on stable isotopes of noble gases (a review)

The dispersion of ratios of (He-3/Ne-21)c and (Ne-22/Ne-21)c depending on the cosmic-ray exposure ages of meteorites is analyzed The dispersion is increased as age decreases This effect may be stipulated by presence of a more significant portion of meteorites of small preatmospheric sizes among meteorites of small radiation ages in comparison to meteorites of higher exposure age

Dispersion of the ratios of cosmogenic isotopes of noble gases in chondrites of different cosmic-ray exposure ages

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Dispersion of the ratios of cosmogenic isotopes of noble gases in chondrites of different cosmic-ray exposure ages