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通过对原生陨石的研究,已经获得有关原始太阳星云起源的大量资料,其中包括Clayton等(1973)发现~(16)O过剩,Gray和Compston(1974)发现现已绝灭的~(26)Al(半衰期=7.2×10~6年)就地衰变生成的~(26)Mg过剩;Nishimura
A large amount of data on the origins of the original solar nebulae have been obtained from the study of primary meteorites, including Clayton et al. (1973) which found excess of ~ (16) O and found to be extinct by Gray and Compston (1974) (Half-life = 7.2 × 10 ~ 6 years) ~ (26) Mg excess generated in situ; Nishimura