Noble gas study of a philippinite with an unusually large bubble

Details Noble gas study of a philippinite with an unusually large bubble Noble gas study of a philippinite with an unusually large bubble

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996m%26ps...31..273m&link_type=abstract

Meteoritics and Planetary Science, Vol. 31, p. 273-277 (1996)

Computer Science

3

Scientific paper

A philippinite with a large bubble (volume ≍5 cm3) was crushed in a specifically constructed device under vacuum. The total pressure, the major gas components, and the concentration and the isotopic composition of noble gases in the trapped gas were measured. The total gas pressure was found to be low, ˜10-4 atm. Compared to terrestrial atmosphere, the abundances of He and Ne are considerably more enriched than the concentrations of the heavy noble gases. Unusually high 20Ne/22Ne and 21Ne/22Ne ratios were measured in the bubble gas. These ratios are higher than values expected for any steady state process and are interpreted to reflect very fast nonsteady state diffusion in the early stages of tektite formation.

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