The stratigraphic age of australites revisited

Details The stratigraphic age of australites revisited The stratigraphic age of australites revisited

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993metic..28..114f&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 28, no. 1, p. 114-119.

Physics

5

Australites, Chronology, Helium Isotopes, Stratigraphy, Alluvium, Diamonds, Radioactive Age Determination, Radiometers, Tektites, Stratigraphy, Age, Australasians, Age Dating, Field Studies, Samples, Terrestrial, Port Campbell Tektites, Bow River Tektites, Radiometry, Terrestrial Age

Scientific paper

The proposed stratigraphic age of 5000-15,000 years for australites found in the vicinity of Port Campbell, Victoria, is demonstrably incorrect. These tektites are not in situ and are also found in an older horizon than previously reported. A minimum stratigraphic age of 250,000 years is calculated from the cosmic-ray-produced He-3 in alluvial diamonds from a horizon that also contains australites near Lake Argyle, Western Australia. There is no reason to believe that a true, rather than a minimum, stratigraphic age for Lake Argyle tektites would not match the many radiometric ages reported in the literature.

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