Investigating the potential of rock surface burial dating using IRPL and IRSL imaging

E. L. Sellwood*, M. Kook, M. Jain

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review


Techniques for spatially resolved measurements of infrared-stimulated luminescence (IRSL) and novel Infrared-photoluminescence (IRPL) emissions have recently been developed for applications of rock surface dating. Such spatially resolved measurements overcome the need for separating out mineral fractions, speed-up sample preparation and measurement times, and data can be quickly processed provide high-resolution luminescence-depth profiles. Here, we investigate the potential of using spatially resolved IRPL and IRSL measurements for rock surface burial dating using two large (cm-scale) rock samples with controlled exposure and surface dose histories. We use a SAR style measurement protocol, with a test-dose normalisation step to monitor sensitivity changes, a preheat to remove unstable charges and a bleaching step to reset the IRPL signal. Through establishing the response of IRPL and IRSL to dose, we are able to construct 2D maps of equivalent doses (Des) for each sample. The results here indicate that spatially resolving IRSL and IRPL from large rock samples has the potential to be used for rock surface burial dating and offers a means to investigate the spatial distribution of dose and mineral-dependent sensitivity changes through cm-scale rock samples.

Original languageEnglish
Article number106783
JournalRadiation Measurements
Number of pages8
Publication statusPublished - 2022


  • Equivalent dose
  • Infrared-photoluminescence
  • Infrared-stimulated luminescence
  • Luminescence-depth profile
  • Rock surface burial dating


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