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A test case for anomalous fading correction in IRSL dating

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Author: Wallinga, J. · Bos, A.J.J. · Dorenbos, P. · Murray, A.S. · Schokker, J.
Type:article
Date:2007
Institution: TNO Bouw en Ondergrond
Source:Quaternary Geochronology, 1-4, 2, 216-221
Identifier: 240150
Keywords: Geosciences · Anomalous fading · Feldspar · IRSL · Luminesence dating · Quartz · correction · feldspar · geochronology · luminescence dating · quartz · sediment · Benelux · Eurasia · Europe · Netherlands · Western Europe

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. © 2006 Elsevier Ltd. All rights reserved.