• myGriffith
    • Staff portal
    • Contact Us⌄
      • Future student enquiries 1800 677 728
      • Current student enquiries 1800 154 055
      • International enquiries +61 7 3735 6425
      • General enquiries 07 3735 7111
      • Online enquiries
      • Staff phonebook
    View Item 
    •   Home
    • Griffith Research Online
    • Journal articles
    • View Item
    • Home
    • Griffith Research Online
    • Journal articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

  • All of Griffith Research Online
    • Communities & Collections
    • Authors
    • By Issue Date
    • Titles
  • This Collection
    • Authors
    • By Issue Date
    • Titles
  • Statistics

  • Most Popular Items
  • Statistics by Country
  • Most Popular Authors
  • Support

  • Contact us
  • FAQs
  • Admin login

  • Login
  • Optical dating of deep-sea sediments using single grains of quartz: a comparison with radiocarbon

    Author(s)
    Olley, JM
    De Deckker, P
    Roberts, RG
    Fifield, LK
    Yoshida, H
    Hancock, G
    Griffith University Author(s)
    Olley, Jon M.
    Year published
    2004
    Metadata
    Show full item record
    Abstract
    In this paper, we demonstrate that optical dating of single grains of quartz offers an alternative means of dating deep-sea sediments. The precision and accuracy of the technique, which has the potential to date sediments deposited during the last 500,000 years or so, is limited by the random and systematic uncertainties associated with producing optical ages. These result in total relative age uncertainties of between 10% and 20% at the 68% confidence interval, which are similar in size to those associated with Late Quaternary oxygen-isotope chronologies. We analysed single grains of quartz from several depth intervals down ...
    View more >
    In this paper, we demonstrate that optical dating of single grains of quartz offers an alternative means of dating deep-sea sediments. The precision and accuracy of the technique, which has the potential to date sediments deposited during the last 500,000 years or so, is limited by the random and systematic uncertainties associated with producing optical ages. These result in total relative age uncertainties of between 10% and 20% at the 68% confidence interval, which are similar in size to those associated with Late Quaternary oxygen-isotope chronologies. We analysed single grains of quartz from several depth intervals down core Fr10/95-GC 17, which was collected offshore from Cape Range Peninsula, Western Australia, from a water depth of 1093 m in the eastern Indian Ocean. The single-grain optical ages are shown to be consistent with AMS radiocarbon ages obtained from planktonic foraminifera from the same core. We also show that marine sediments are not immune from partial or heterogeneous bleaching (incomplete resetting) of the optical dating signal. Where partial or heterogeneous bleaching of the optical dating signal is indicated, we recommend that single-grain dating be employed and the burial dose estimated from the population of grains with the lowest absorbed radiation dose.
    View less >
    Journal Title
    Sedimentary Geology
    Volume
    169
    Issue
    3-4
    DOI
    https://doi.org/10.1016/j.sedgeo.2004.05.005
    Subject
    Geology
    Publication URI
    http://hdl.handle.net/10072/28314
    Collection
    • Journal articles

    Footer

    Disclaimer

    • Privacy policy
    • Copyright matters
    • CRICOS Provider - 00233E
    • TEQSA: PRV12076

    Tagline

    • Gold Coast
    • Logan
    • Brisbane - Queensland, Australia
    First Peoples of Australia
    • Aboriginal
    • Torres Strait Islander