Zeroing of the OSL signal as a function of grain size: Investigating bleaching and thermal transfer for a young fluvial sample

Jimi L. Truelsen; Jakob Wallinga

Zeroing of the OSL signal as a function of grain size: Investigating bleaching and thermal transfer for a young fluvial sample

Research output: Contribution to journal › Article › Academic › peer-review

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.

Original language	English
Pages (from-to)	1-8
Number of pages	8
Journal	Geochronometria
Volume	22
Publication status	Published - 2003
Externally published	Yes

Keywords

Fluvial
Grain Size
Optical Dating
Poor Bleaching
Quartz

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title = "Zeroing of the OSL signal as a function of grain size: Investigating bleaching and thermal transfer for a young fluvial sample",

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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author = "Truelsen, {Jimi L.} and Jakob Wallinga",

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pages = "1--8",

journal = "Geochronometria",

issn = "1733-8387",

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TY - JOUR

T1 - Zeroing of the OSL signal as a function of grain size

T2 - Investigating bleaching and thermal transfer for a young fluvial sample

AU - Truelsen, Jimi L.

AU - Wallinga, Jakob

PY - 2003

Y1 - 2003

N2 - 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.

AB - 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.

KW - Fluvial

KW - Grain Size

KW - Optical Dating

KW - Poor Bleaching

KW - Quartz

M3 - Article

AN - SCOPUS:33747894488

SN - 1733-8387

VL - 22

SP - 1

EP - 8

JO - Geochronometria

JF - Geochronometria

ER -

Zeroing of the OSL signal as a function of grain size: Investigating bleaching and thermal transfer for a young fluvial sample

Abstract

Keywords

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