GLASS DATING BY FISSION FRAGMENT TRACKS
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)
- Research Organization:
- General Electric Research Lab., Schenectady, N.Y.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-18-008531
- OSTI ID:
- 4112095
- Journal Information:
- Journal of Geophysical Research (U.S.), Vol. Vol: 69; Other Information: Orig. Receipt Date: 31-DEC-64
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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