The Neon Alphabet Game
All previously identified components of trapped meteoritic neon-Ne-A, Ne-B, Ne-C, Ne-D, Ne-E, Ne-Al, Ne-A2, Ne-E(L), Ne-E(H), and Ne-O - and differences between the isotopic compositions of atmospheric, meteoritic, and solar-wind-implanted Ne can be accounted for by mass fractionation and spallation reactions. These processes can also account for the experimental data that have previously been assigned to nucleogenetic anomalies in meteoritic Ne. The Ne record of events in the early history of the solar system includes evidence of 1) severe fractionation, 2) spallogenic 21Ne from an early irradiation of material prior to the compaction of meteorites, 3) a close association of planetary He and Ne with isotopically anomalous Ar, Kr, and Xe, and 4) the total absence of He and Ne in the noble gas component which contains isotopically normal or planetary-type Ar, Kr, and Xe. Experimental difficulties in the detection of extremely low values of the 20Ne/22Ne ratio are presented in an appendix.-P.Br.
D. D. Sabu and O. Manuel, "The Neon Alphabet Game," Geochimica et Cosmochimica Acta, Supplement, vol. 14, pp. 879-899, Elsevier, Mar 1980.
Article - Journal
© 1980 Elsevier, All rights reserved.
01 Mar 1980