Noble Gases in Silicate Inclusions of Kodaikanal

Author

Emmit Calvin Alexander Jr.
Oliver Manuel, Missouri University of Science and TechnologyFollow

Abstract

Analyses of the noble gases from silicate inclusion of Kodaikanal show extensive loss of the lighter cosmogenic gases. A comparison of the cosmogenic gases in the silicates with reported concentrations of cosmogenic noble gases in the metal phase indicates an exposure age between 7.5 and 40 million years if a chondritic composition is assumed for the silicates. An upper limit of 6 × 10^-13 cm³ STP radiogenic ¹²⁹Xe per gram is almost three orders of magnitude less than the radiogenic ¹²⁹Xe in Toluca silicates. This agrees with the different K-Ar and Rb-Sr ages reported for the inclusions in these two meteorites.

Recommended Citation

E. C. Alexander and O. Manuel, "Noble Gases in Silicate Inclusions of Kodaikanal," Earth and Planetary Science Letters, vol. 4, pp. 363 - 367, Elsevier, Jul 1968.

The definitive version is available at https://doi.org/10.1016/0012-821X(68)90064-2

Department(s)

Chemistry

International Standard Serial Number (ISSN)

0012-821X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1968 Elsevier, All rights reserved.

Publication Date

01 Jul 1968