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Radiation Protection Dosimetry 34:69-72 (1990)
© 1990 Oxford University Press

Dating of Austrian Loess Deposits

G. Wallner, E. Wild, H. Aref-Azar, P. Hille and W.F.O. Schmidt

Palaeo-soils from Stillfried (Lower Austria) are dated by conventional thermoluminescence (TL) and phototransferred TL (PTTL) methods. The TL method dates feldspar whereas the PTTL effect is shown by quartz. For the younger soil Stillfried B (StB) the equivalent dose is measured by the additive method and the total bleach-regeneration method. For Stillfried A (StA) only the regeneration technique is available because of the non-linear growth of the dose response. Evaluation of the dose rates is done by thick source a counting and by gamma spectroscopy. For both palaeo-soils TL and PTTL dates are in good agreement (StB: TL age 33±3 ka, PTTL age 37±4 ka. StA: TL age 79±8 ka, PTTL age 87±9 ka). The age of StB is fully consistent with the TL ages of soils correlated with StB and the 14C age of a charcoal layer (28, 340 ± 220 a) slightly above the soil StB.


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