• Login
    View Item 
    •   Home
    • Journals and Magazines
    • Radiocarbon
    • Radiocarbon, Volume 47 (2005)
    • Radiocarbon, Volume 47, Number 1 (2005)
    • View Item
    •   Home
    • Journals and Magazines
    • Radiocarbon
    • Radiocarbon, Volume 47 (2005)
    • Radiocarbon, Volume 47, Number 1 (2005)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UA Campus RepositoryCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournalThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsPublisherJournal

    My Account

    LoginRegister

    About

    AboutUA Faculty PublicationsUA DissertationsUA Master's ThesesUA Honors ThesesUA PressUA YearbooksUA CatalogsUA Libraries

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Radiocarbon Dating of Modern Peat Profiles: Pre- and Post-Bomb 14C Variations in the Construction of Age-Depth Models

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    2805-2816-1-PB.pdf
    Size:
    1.068Mb
    Format:
    PDF
    Download
    Author
    Goslar, Tomasz
    van der Knaap, W. O.
    Hicks, Sheila
    Andrič, Maja
    Czernik, Justyna
    Goslar, Ewa
    Räsänen, Satu
    Hyötylä, Heidi
    Issue Date
    2005-01-01
    
    Metadata
    Show full item record
    Citation
    Goslar, T., van der Knaap, W. O., Hicks, S., Andrič, M., Czernik, J., Goslar, E., ... & Hyötylä, H. (2005). Radiocarbon dating of modern peat profiles: pre-and post-bomb 14C variations in the construction of age-depth models. Radiocarbon, 47(1), 115-134.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    URI
    http://hdl.handle.net/10150/653691
    DOI
    10.1017/S0033822200052243
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    We present studies of 9 modern (up to 400-yr-old) peat sections from Slovenia, Switzerland, Austria, Italy, and Finland. Precise radiocarbon dating of modern samples is possible due to the large bomb peak of atmospheric 14C concentration in 1963 and the following rapid decline in the 14C level. All the analyzed 14C profiles appeared concordant with the shape of the bomb peak of atmospheric 14C concentration, integrated over some time interval with a length specific to the peat section. In the peat layers covered by the bomb peak, calendar ages of individual peat samples could be determined almost immediately, with an accuracy of 2-3 yr. In the pre-bomb sections, the calendar ages of individual dated samples are determined in the form of multi-modal probability distributions of about 300 yr wide (about AD 1650-1950). However, simultaneous use of the post-bomb and pre-bomb 14C dates, and lithological information, enabled the rejection of most modes of probability distributions in the pre-bomb section. In effect, precise age-depth models of the post-bomb sections have been extended back in time, into the "wiggly" part of the 14C calibration curve. Our study has demonstrated that where annual resolution is concerned, tissues of Sphagnum are the only representative material for 14C dating, although even samples of pure Sphagnum collected from a very thin slice of the peat section contain tissues grown in different years, so they integrate the atmospheric 14C signal over a period of time. This time period (0.5-8 yr, depending on the site) seems to correlate with the peat accumulation rate, but it also depends on how the sampled peat sections were handled. When constructing age-depth models, for some peat sections we used the strategy of multi-stage 14C dating. This led to a drastic reduction in the uncertainty of the age-depth models, by dating only a few additional samples in the profile. Our study is the first in which peat sections from the late pre-bomb time (AD 1900-1960) have been precisely dated at a high temporal resolution. In this time interval, 14C ages of all the samples dated were younger than those derived from the atmospheric ccalibration curve, apparently due to the effect of integration. Evidently, the determination of calendar ages based on 14C dating of single peat examples from that interval may be affected by a serious error if the possibility of integration is ignored.
    Type
    Article
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200052243
    Scopus Count
    Collections
    Radiocarbon, Volume 47, Number 1 (2005)

    entitlement

     
    The University of Arizona Libraries | 1510 E. University Blvd. | Tucson, AZ 85721-0055
    Tel 520-621-6442 | repository@u.library.arizona.edu
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.