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A test case for anomalous fading correction in IRSL dating |
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| Authors: | Jakob Wallinga Adrie JJ Bos Pieter Dorenbos Andrew S Murray Jeroen Schokker |
| Institution: | aNetherlands Centre for Luminescence dating, Faculty of Applied Sciences, Delft University of Technology, Mekelweg 15, NL-2629 JB, Delft, The Netherlands bFaculty of Applied Sciences, Delft University of Technology, Mekelweg 15, NL-2629 JB, Delft, The Netherlands cNordic Laboratory for Luminescence Dating, Risø National Laboratory, Department of Earth Sciences, Aarhus University, DK-4000 Roskilde, Denmark dTNO Built Environment and Geosciences—Geological Survey of the Netherlands, PO Box 80015, NL-3508 TA Utrecht, The Netherlands |
| Abstract: | Infrared-stimulated luminescence (IRSL) dating of feldspars has the potential to date deposits beyond the age range of quartz optical (OSL) dating. Successful application of feldspar IRSL dating is, however, often precluded due to anomalous-fading, the tunnelling of electrons from one defect site to another. In this paper we test procedures proposed for anomalous-fading correction by comparing feldspar IRSL and quartz OSL dating results on a suite of samples from continental deposits from the southeastern Netherlands. We find that even after anomalous-fading correction IRSL ages underestimate the burial age of the deposits and argue that this may be a consequence of a dependency of anomalous fading rate on the dose rate and on the absorbed dose. |
| Keywords: | Luminesence dating IRSL Feldspar Quartz Anomalous fading |
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