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Author Fleischer, R. L. ♦ Price, P. B.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword GEOLOGY AND MINERALOGY ♦ AGE ESTIMATION ♦ ARGON ISOTOPES ♦ DECAY ♦ EARTH ♦ FISSION PRODUCTS ♦ GEOLOGY ♦ GLASS ♦ METEORITES ♦ POTASSIUM ISOTOPES ♦ RUBIDIUM ISOTOPES ♦ STRONTIUM ISOTOPES ♦ TEKTITES ♦ TEMPERATURE ♦ URANIUM 238
Abstract The use of fission fragment damage tracks for dating of geological and other glasses is described and applied to a number of tektites and a Libyan glass. By comparison with K-- Ar and Rb-- Sr dates the decay constant for spontaneous fission of U/sup 238/ is derived geologically to be 6.9 x 10/sup -17/ yr/sup Most of the tektite dates are in good agreement with those established by K-- Ar measurements. For Libyan glass the fission track age is 34 plus or minus 6 m.y. Elevated temperature experiments indicate that tracks in tektites would be stable at 22 deg C for much longer thaa the age of the earth and could disappear within 100 million years only if the temperature of the glass had exceeded 170 deg C. A suggestion for a method of dating thermal histories is presented. (auth)
ISSN 00221406
Educational Use Research
Learning Resource Type Article
Publisher Date 1964-01-15
Publisher Department General Electric Research Lab., Schenectady, N.Y.
Journal Journal of Geophysical Research
Volume Number 69
Organization General Electric Research Lab., Schenectady, N.Y.


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