Other
Scientific paper
May 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982e%26psl..58..419m&link_type=abstract
Earth and Planetary Science Letters, vol. 58, no. 3, May 1982, p. 419-429. Research supported by the Science Research Council o
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18
Antarctic Regions, Chronology, Meteorites, Thermoluminescence, Cosmic Rays, Decay Rates, Extraterrestrial Radiation, Temperature Distribution, Weathering, Meteorites, Dating Techniques, Thermoluminescence, Antarctic Meteorites, Terrestrial Ages, Allan Hills Meteorites, Decay Rate, Temperature, Glow Curve, Techniques, Procedure, Comparisons, Alha77003, Alha77214, Alha77155, Alha77272, Alha77216, Alha77004, Alha77015, Alha77182, Weathering, Aluminum 26, Barwell Meteorite, Olivenza Meteorite, Kirin Meteorite,
Scientific paper
The use of thermoluminescence (TL) measurements to determine the terrestrial ages of Antarctic meteorites is discussed. Principles of the calculation of terrestrial ages from thermoluminescence characteristics are presented, and problems related to the determination of the original TL level at the time of fall to earth and the estimation of the TL decay rate are examined. Glow curves measured for several Antarctic meteorites are presented, and used to calculate upper limits for terrestrial ages by comparison of the ratio of low temperature to high temperature emission with theoretical values for the decay of the Saratov meteorite at storage temperatures of 0 and -20 C. Problems of the estimation of the effective storage temperature for Antarctic meteorites and the effects of weathering are considered. It is concluded that despite its many difficulties, TL measurements may prove to be a useful means of estimating the terrestrial ages of Antarctic meteorites, particularly when combined with other techniques.
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