New fission track ages of tektites and related glasses

Details New fission track ages of tektites and related glasses New fission track ages of tektites and related glasses

Sep 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969gecoa..33.1075g&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 33, Issue 9, pp.1075-1081

Physics

16

Scientific paper

Fission track dating is applied to a large number of australites, Muong Nong type tektites, Darwin glasses and Libyan Desert glasses. It is found that these glasses often have lowered fission track ages due to annealing effects. The same specimens have also smaller fission track etch pits. According to the diminishing percentage of etched fossil fission track diameters, lowered fission track ages are corrected. A mean age of 0.7 m.y. is found for eleven australites, six Darwin glasses and seven Muong Nong type tektites (from Laos and Thailand), indicating a related genesis of these glasses. Uncorrected fission track ages of five Libyan Desert glasses (26.6 -1.3 +6.3 m.y.) and two bediasites (33.2 .2 +8.3 m.y.) are found to be different. With regard to these results an interrelationship between these two groups of glasses seems to be improbable.

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