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    Fire history of a giant African baobab evinced by radiocarbon dating

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    _717-726.pdf (1.002Mb)
    Date
    2010-08
    Author
    Patrut, Adrian  Concept link
    Mayne, Diana H.  Concept link
    von Reden, Karl F.  Concept link
    Lowy, Daniel A.  Concept link
    Van Pelt, Robert  Concept link
    McNichol, Ann P.  Concept link
    Roberts, Mark L.  Concept link
    Margineanu, Dragos  Concept link
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    Citable URI
    https://hdl.handle.net/1912/4374
    As published
    https://journals.uair.arizona.edu/index.php/radiocarbon/article/view/3705
    Abstract
    The article reports the first radiocarbon dating of a live African baobab (Adansonia digitata L.), by investigating wood samples collected from 2 inner cavities of the very large 2-stemmed Platland tree of South Africa. Some 16 segments extracted from determined positions of the samples, which correspond to a depth of up to 15–20 cm in the wood, were processed and analyzed by accelerator mass spectrometry (AMS). Calibrated ages of segments are not correlated with their positions in the stems of the tree. Dating results indicate that the segments originate from new growth layers, with a thickness of several centimeters, which cover the original old wood. Four new growth layers were dated before the reference year AD 1950 and 2 layers were dated post-AD 1950, in the post-bomb period. Formation of these layers was triggered by major damage inside the cavities. Fire episodes are the only possible explanation for such successive major wounds over large areas or over the entire area of the inner cavities of the Platland tree, able to trigger regrowth.
    Description
    Author Posting. © Arizona Board of Regents on behalf of the University of Arizona, 2010. This article is posted here by permission of Dept. of Geosciences, University of Arizona for personal use, not for redistribution. The definitive version was published in Radiocarbon 52 (2010): 717-726.
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    • Geology and Geophysics (G&G)
    Suggested Citation
    Radiocarbon 52 (2010): 717-726
     

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