Abstract

A sequence of stranded beach dunes in the southeast of South Australia which resulted from the advance and retreat of the sea over a tectonically rising land surface during the past 800 ka has been securely dated by geological means and successfully used to test thermoluminescence dating based on quartz. We have now obtained a series of promising results from the same sequence with a test of optical dating on inclusions within the quartz grains. The innovative aspect of the measurements is the use of infrared irradiation to stimulate emission from the inclusions rather than conventional stimulation of the quartz itself by light of shorter wavelength. Satisfactory ages were found for seven dunes covering the time span 0-400 ka.

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