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    Rapid, high-resolution C-14 chronology of ooids

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    Beaupre GCA Ooids accepted.pdf (736.5Kb)
    Date
    2015-03
    Author
    Beaupre, Steven R.  Concept link
    Roberts, Mark L.  Concept link
    Burton, Joshua R.  Concept link
    Summons, Roger E.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/7363
    As published
    https://doi.org/10.1016/j.gca.2015.03.009
    Abstract
    Ooids are small, spherical to ellipsoidal grains composed of concentric layers of CaCO3 that could potentially serve as biogeochemical records of the environments in which they grew. Such records, however, must be placed in the proper temporal context. Therefore, we developed a novel acidification system and employed an accelerator mass spectrometer (AMS) with a gas accepting ion source to obtain radiocarbon (14C) chronologies extending radially through ooids within one 8-hour workday. The method was applied to ooids from Highborne Cay, Bahamas and Shark Bay, Australia, yielding reproducible 14C chronologies, as well as constraints on the rates and durations of ooid growth and independent estimates of local 14C reservoir ages.
    Description
    Author Posting. © The Author(s), 2015. This is the author's version of the work. It is posted here by permission of Elsevier for personal use, not for redistribution. The definitive version was published in Geochimica et Cosmochimica Acta 159 (2015): 126-138, doi:10.1016/j.gca.2015.03.009.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Preprint: Beaupre, Steven R., Roberts, Mark L., Burton, Joshua R., Summons, Roger E., "Rapid, high-resolution C-14 chronology of ooids", 2015-03, https://doi.org/10.1016/j.gca.2015.03.009, https://hdl.handle.net/1912/7363
     
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