Towards dating Quaternary sediments using the quartz Violet Stimulated Luminescence (VSL) signal

C. Ankjaergaard, M. Jain, J. Wallinga

Research output: Contribution to journalArticleAcademicpeer-review

27 Citations (Scopus)

Abstract

Quartz optically stimulated luminescence (OSL) dating is widely used to determine the time of deposition and burial of Late Quaternary sediments. Application of the method is usually limited to the past 150,000 years due to early saturation of the OSL signal. Here we explore the potential to date Quaternary sediments using the violet (402 nm) stimulated luminescence (VSL) signal of quartz. We develop and test a new post-blue VSL single aliquot regenerative dose dating protocol, and demonstrate that the VSL signal originates from a deep trap at about 1.9 eV with a thermal lifetime of 1011 years at 10 C, and that this trap is bleachable by sunlight. The VSL signal grows with dose to w6400 Gy, a factor w20 higher than the conventional quartz OSL signal, and with the proposed protocol we recover a known dose of 1000 Gy in three out of four samples. The potential of the VSL protocol for dating Quaternary sediments is highlighted by its successful application to a suite of geological samples ranging in age between 13 and 330 ka. Based on our investigations, we propose that the VSL protocol has the potential to extend the quartz dating range to cover the full Quaternary.
Original languageEnglish
Pages (from-to)99-109
JournalQuaternary Geochronology
Volume18
DOIs
Publication statusPublished - 2013

Fingerprint

luminescence
quartz
sediment
luminescence dating
dating
saturation
protocol
dose

Keywords

  • regenerative-dose protocol
  • fine-grained quartz
  • isothermal tl
  • chinese loess
  • k-feldspars
  • tt-osl
  • single
  • components
  • samples
  • ages

Cite this

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title = "Towards dating Quaternary sediments using the quartz Violet Stimulated Luminescence (VSL) signal",
abstract = "Quartz optically stimulated luminescence (OSL) dating is widely used to determine the time of deposition and burial of Late Quaternary sediments. Application of the method is usually limited to the past 150,000 years due to early saturation of the OSL signal. Here we explore the potential to date Quaternary sediments using the violet (402 nm) stimulated luminescence (VSL) signal of quartz. We develop and test a new post-blue VSL single aliquot regenerative dose dating protocol, and demonstrate that the VSL signal originates from a deep trap at about 1.9 eV with a thermal lifetime of 1011 years at 10 C, and that this trap is bleachable by sunlight. The VSL signal grows with dose to w6400 Gy, a factor w20 higher than the conventional quartz OSL signal, and with the proposed protocol we recover a known dose of 1000 Gy in three out of four samples. The potential of the VSL protocol for dating Quaternary sediments is highlighted by its successful application to a suite of geological samples ranging in age between 13 and 330 ka. Based on our investigations, we propose that the VSL protocol has the potential to extend the quartz dating range to cover the full Quaternary.",
keywords = "regenerative-dose protocol, fine-grained quartz, isothermal tl, chinese loess, k-feldspars, tt-osl, single, components, samples, ages",
author = "C. Ankjaergaard and M. Jain and J. Wallinga",
year = "2013",
doi = "10.1016/j.quageo.2013.06.001",
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pages = "99--109",
journal = "Quaternary Geochronology",
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Towards dating Quaternary sediments using the quartz Violet Stimulated Luminescence (VSL) signal. / Ankjaergaard, C.; Jain, M.; Wallinga, J.

In: Quaternary Geochronology, Vol. 18, 2013, p. 99-109.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Towards dating Quaternary sediments using the quartz Violet Stimulated Luminescence (VSL) signal

AU - Ankjaergaard, C.

AU - Jain, M.

AU - Wallinga, J.

PY - 2013

Y1 - 2013

N2 - Quartz optically stimulated luminescence (OSL) dating is widely used to determine the time of deposition and burial of Late Quaternary sediments. Application of the method is usually limited to the past 150,000 years due to early saturation of the OSL signal. Here we explore the potential to date Quaternary sediments using the violet (402 nm) stimulated luminescence (VSL) signal of quartz. We develop and test a new post-blue VSL single aliquot regenerative dose dating protocol, and demonstrate that the VSL signal originates from a deep trap at about 1.9 eV with a thermal lifetime of 1011 years at 10 C, and that this trap is bleachable by sunlight. The VSL signal grows with dose to w6400 Gy, a factor w20 higher than the conventional quartz OSL signal, and with the proposed protocol we recover a known dose of 1000 Gy in three out of four samples. The potential of the VSL protocol for dating Quaternary sediments is highlighted by its successful application to a suite of geological samples ranging in age between 13 and 330 ka. Based on our investigations, we propose that the VSL protocol has the potential to extend the quartz dating range to cover the full Quaternary.

AB - Quartz optically stimulated luminescence (OSL) dating is widely used to determine the time of deposition and burial of Late Quaternary sediments. Application of the method is usually limited to the past 150,000 years due to early saturation of the OSL signal. Here we explore the potential to date Quaternary sediments using the violet (402 nm) stimulated luminescence (VSL) signal of quartz. We develop and test a new post-blue VSL single aliquot regenerative dose dating protocol, and demonstrate that the VSL signal originates from a deep trap at about 1.9 eV with a thermal lifetime of 1011 years at 10 C, and that this trap is bleachable by sunlight. The VSL signal grows with dose to w6400 Gy, a factor w20 higher than the conventional quartz OSL signal, and with the proposed protocol we recover a known dose of 1000 Gy in three out of four samples. The potential of the VSL protocol for dating Quaternary sediments is highlighted by its successful application to a suite of geological samples ranging in age between 13 and 330 ka. Based on our investigations, we propose that the VSL protocol has the potential to extend the quartz dating range to cover the full Quaternary.

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KW - tt-osl

KW - single

KW - components

KW - samples

KW - ages

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