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Dose recovery tests using Ti-related ESR signals in quartz : First results
Beerten, Koen Rittner, Sarah Lomax, Johanna Radtke, Ulrich
Beerten, Koen
Rittner, Sarah
Lomax, Johanna
Radtke, Ulrich
Abstract
Experimental results from ESR dose recovery tests using Ti-related absorption lines in sedimentary quartz will be presented and discussed. The tests were performed on two Late Pleistocene Australian dune sands with a known burial dose based on OSL measurements. The regenerative dose technique (after thermal annealing) was used to detect any differences between ESR estimates of the natural dose, and ESR estimates of an equal laboratory gamma-dose. The studied absorption lines show consistent results with regard to the laboratory dose, but inconsistencies regarding the recovery of the natural dose. Line-shape changes between the natural and artificially induced ESR signals are a matter of concern. These changes are probably the result of the different relative abundance of Ti–H and Ti–Li centres in the naturally irradiated and artificially irradiated sample.
Keywords
ESR dating, quartz, aeolian sediments, pleistocene, Murray Basin, Australia
Date
2008
Type
Journal article
Journal
Quaternary Geochronology
Book
Volume
3
Issue
1-2
Page Range
143-149
Article Number
ACU Department
School of Education
Faculty of Education and Arts
Faculty of Education and Arts
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Relation URI
Source URL
Event URL
Open Access Status
License
All rights reserved
File Access
Controlled