Mathematical model quantifies multiple daylight exposure and burial events for rock surfaces using luminescence dating

Trine Freiesleben, Reza Sohbati, Andrew Murray, Mayank Jain, Sahar al Khasawneh, Søren Hvidt, Bo Jakobsen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Interest in the optically stimulated luminescence (OSL) dating of rock surfaces has increased significantly over the last few years, as the potential of the method has been explored. It has been realized that luminescence-depth profiles show qualitative evidence for multiple daylight exposure and burial events. To quantify both burial and exposure events a new mathematical model is developed by expanding the existing models of evolution of luminescence–depth profiles, to include repeated sequential events of burial and exposure to daylight. This new model is applied to an infrared stimulated luminescence-depth profile from a feldspar-rich granite cobble from an archaeological site near Aarhus, Denmark. This profile shows qualitative evidence for multiple daylight exposure and burial events; these are quantified using the model developed here. By determining the burial ages from the surface layer of the cobble and by fitting the new model to the luminescence profile, it is concluded that the cobble was well bleached before burial. This indicates that the OSL burial age is likely to be reliable. In addition, a recent known exposure event provides an approximate calibration for older daylight exposure events.
Original languageEnglish
JournalRadiation Measurements
Volume81
Pages (from-to)16–22
ISSN1350-4487
DOIs
Publication statusPublished - 2015

Cite this

Freiesleben, Trine ; Sohbati, Reza ; Murray, Andrew ; Jain, Mayank ; al Khasawneh, Sahar ; Hvidt, Søren ; Jakobsen, Bo. / Mathematical model quantifies multiple daylight exposure and burial events for rock surfaces using luminescence dating. In: Radiation Measurements. 2015 ; Vol. 81. pp. 16–22.
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title = "Mathematical model quantifies multiple daylight exposure and burial events for rock surfaces using luminescence dating",
abstract = "Interest in the optically stimulated luminescence (OSL) dating of rock surfaces has increased significantly over the last few years, as the potential of the method has been explored. It has been realized that luminescence-depth profiles show qualitative evidence for multiple daylight exposure and burial events. To quantify both burial and exposure events a new mathematical model is developed by expanding the existing models of evolution of luminescence–depth profiles, to include repeated sequential events of burial and exposure to daylight. This new model is applied to an infrared stimulated luminescence-depth profile from a feldspar-rich granite cobble from an archaeological site near Aarhus, Denmark. This profile shows qualitative evidence for multiple daylight exposure and burial events; these are quantified using the model developed here. By determining the burial ages from the surface layer of the cobble and by fitting the new model to the luminescence profile, it is concluded that the cobble was well bleached before burial. This indicates that the OSL burial age is likely to be reliable. In addition, a recent known exposure event provides an approximate calibration for older daylight exposure events.",
author = "Trine Freiesleben and Reza Sohbati and Andrew Murray and Mayank Jain and {al Khasawneh}, Sahar and S{\o}ren Hvidt and Bo Jakobsen",
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Mathematical model quantifies multiple daylight exposure and burial events for rock surfaces using luminescence dating. / Freiesleben, Trine; Sohbati, Reza; Murray, Andrew; Jain, Mayank; al Khasawneh, Sahar; Hvidt, Søren; Jakobsen, Bo.

In: Radiation Measurements, Vol. 81, 2015, p. 16–22.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Mathematical model quantifies multiple daylight exposure and burial events for rock surfaces using luminescence dating

AU - Freiesleben, Trine

AU - Sohbati, Reza

AU - Murray, Andrew

AU - Jain, Mayank

AU - al Khasawneh, Sahar

AU - Hvidt, Søren

AU - Jakobsen, Bo

PY - 2015

Y1 - 2015

N2 - Interest in the optically stimulated luminescence (OSL) dating of rock surfaces has increased significantly over the last few years, as the potential of the method has been explored. It has been realized that luminescence-depth profiles show qualitative evidence for multiple daylight exposure and burial events. To quantify both burial and exposure events a new mathematical model is developed by expanding the existing models of evolution of luminescence–depth profiles, to include repeated sequential events of burial and exposure to daylight. This new model is applied to an infrared stimulated luminescence-depth profile from a feldspar-rich granite cobble from an archaeological site near Aarhus, Denmark. This profile shows qualitative evidence for multiple daylight exposure and burial events; these are quantified using the model developed here. By determining the burial ages from the surface layer of the cobble and by fitting the new model to the luminescence profile, it is concluded that the cobble was well bleached before burial. This indicates that the OSL burial age is likely to be reliable. In addition, a recent known exposure event provides an approximate calibration for older daylight exposure events.

AB - Interest in the optically stimulated luminescence (OSL) dating of rock surfaces has increased significantly over the last few years, as the potential of the method has been explored. It has been realized that luminescence-depth profiles show qualitative evidence for multiple daylight exposure and burial events. To quantify both burial and exposure events a new mathematical model is developed by expanding the existing models of evolution of luminescence–depth profiles, to include repeated sequential events of burial and exposure to daylight. This new model is applied to an infrared stimulated luminescence-depth profile from a feldspar-rich granite cobble from an archaeological site near Aarhus, Denmark. This profile shows qualitative evidence for multiple daylight exposure and burial events; these are quantified using the model developed here. By determining the burial ages from the surface layer of the cobble and by fitting the new model to the luminescence profile, it is concluded that the cobble was well bleached before burial. This indicates that the OSL burial age is likely to be reliable. In addition, a recent known exposure event provides an approximate calibration for older daylight exposure events.

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SN - 1350-4487

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