Abstract
In this study we test, for the first time, the potential of an elevated temperature post-IR IR (pIRIR290) SAR
protocol for the dating of young heated artefacts. Seven heated stones and seven potshards were
collected from three different archaeological sites in Denmark: one site from the early Pre-Roman Iron
Age 200 BC to AD 100, and two from the Viking period between AD 800 and 1200.
We first derive quartz OSL ages for these samples, to support the archaeological age control. The
luminescence characteristics of the pIRIR290 signal are then investigated; in particular the dose recovery
ratios are shown to be close to unity. The performance of the feldspar pIRIR290 protocol is then examined
by comparing the pIRIR290 ages with those based on the quartz OSL signal; the average ratio of pIRIR290
to OSL ages is 1.14 ± 0.05 (n = 14) and there is some suggestion that the possible overestimation of the
feldspar ages compared to quartz is only of significance for the heated stone samples. Nevertheless, there
is no indication of incomplete heating of the stones; the ratios of De derived from the IR50 and pIRIR290
signals are independent of sample type, and consistent with complete resetting by heating. Comparison
with the archaeological age control is not able to identify whether quartz or feldspar provides the most
reliable dating signal.
© 2015 Elsevier B.V. All rights reserved.
Original language | English |
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Journal | Quaternary Geochronology |
Volume | 30 |
Issue number | Part B |
Pages (from-to) | 386-391 |
ISSN | 1871-1014 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- Iron age
- Viking age
- Ceramic
- Heated stone
- Denmark
- Optically stimulated luminescence(OSL)
- Post IR IRSL