ON THE PRODUCTION RATIOS OF RARE GAS ISOTOPES IN STONE METEORITES

Journal Article · Tue May 01 04:00:00 EDT 1962 · J. Geophys. Research

DOI:https://doi.org/10.1029/JZ067i005p02023· OSTI ID:4840262

Stauffer, H

Abundances and isotopic compositions of argon, neon, helium extracted from eight stone and four stony-iron meteorites were determined, and argon- potassium ages were calculated. The production ratios of cosmic-rayproduced isotopes were compared with the chemical composition of the samples. It was found that the ratios Ne/sup 21//Ar/sup 38/ may be predicted with an accuracy of usually beiter than 20% by the equation Ne/sup 21//Ar/sup 38/= 2.9 x STASi! + l.35(Al! + 6.8STAMgj/STAFe! + 16.5STACa! where STASi!, STAAl!, STAMg!, STAFe!, and STACa! are the concentrations of the corresponding elements. lt is concluded that the cosmogenic ratios He3/ determined essentially by the chemical composition of the samples only and that differences in shielding and possible diffusive losses are of minor importance. (auth)

• Research Organization: Univ. of California, San Diego
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-019168
• OSTI ID: 4840262
• Journal Information: J. Geophys. Research, Journal Name: J. Geophys. Research Vol. Vol: 67
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
AGE ESTIMATION
ALUMINUM
ARGON
ARGON 38
CALCIUM
COSMIC RADIATION
DIFFUSION
DISTRIBUTION
EQUATIONS
GEOLOGY, MINERALOGY, AND METEOROLOGY
HELIUM
HELIUM 3
INTERACTIONS
IRON
ISOTOPES
LOSSES
MAGNESIUM
METEORITES
NEON
NEON 21
POTASSIUM
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
RARE GASES
SILICON