Determination of burial dose in incompletely bleached fluvial samples using single grains of quartz

Kristina Jørkov Thomsen, A.S. Murray, Lars Bøtter-Jensen, J. Kinahan

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    We determine the burial dose in three known-age incompletely bleached fluvial samples using single grains of quartz. Estimation of burial dose in incompletely bleached samples requires that the characteristics of the well-bleached part of the distribution are known in order to distinguish between well-bleached and poorly bleached grains. It is especially important to investigate if the uncertainties assigned to individual estimates of dose adequately describe the observed variability in well-bleached dose distributions. We investigate this by quantifying the overdispersion in laboratory-bleached and gamma-irradiated samples. We show that there is a linear relationship between the over-dispersion and the mean dose. Knowing this uncertainty relationship enables us to estimate the burial dose by comparing the predicted uncertainty on the running mean with that calculated from actual dispersion. (c) 2007 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    JournalRadiation Measurements
    Volume42
    Issue number3
    Pages (from-to)370-379
    ISSN1350-4487
    DOIs
    Publication statusPublished - 2007

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