Crustal neon - A striking uniformity

Details Crustal neon - A striking uniformity Crustal neon - A striking uniformity

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl..98..277k&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 98, no. 3-4, June 1990, p. 277-286. Research supported by DOE.

Computer Science

28

Alpha Particles, Earth Crust, Neon Isotopes, Nuclear Interactions, Radioactive Decay, Alberta, New Mexico

Scientific paper

As part of the effort to characterize terrestrial fluid reservoirs in terms of their noble gas content, several methane-rich natural gases collected throughout Alberta (Canada) and the Tucamari and San Juan Basins of New Mexico (USA) were analyzed. A well-defined nucleogenic (crustal) neon component was identified. This neon component was produced from (alpha, n) and (n, alpha) nuclear interactions involving nuclei of O and F, as was shown by Wetherill (1954). The inferred upper limit isotopic composition is Ne-21/Ne-22 = 0.47 + or - 0.01, for the case of Ne-20/Ne-22 = 0.0. The composition is distinct from the air neon and from neon observed in MORB basalts.

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