Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 562219
Title Zeroing of the OSL signal as a function of grain size : Investigating bleaching and thermal transfer for a young fluvial sample
Author(s) Truelsen, Jimi L.; Wallinga, Jakob
Source Geochronometria 22 (2003). - ISSN 1733-8387 - p. 1 - 8.
Publication type Refereed Article in a scientific journal
Publication year 2003
Keyword(s) Fluvial - Grain Size - Optical Dating - Poor Bleaching - Quartz
Abstract

Previous studies have indicated that the OSL signal from coarser grain-size fractions might be more completely reset during fluvial transport. In this study we investigate whether this feature is real, or rather an artefact of thermal transfer effects that might affect finer grains more due to smaller thermal lag during heat treatment. Our experimental results obtained on three grain-size fractions (90-125, 180-212 and 425-500 µm) clearly show that better bleaching of coarser grains is not caused by differences in thermal transfer. On the basis of our results we advise selecting a coarse grain size for analysis when dating young fluvial deposits.

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