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    Controlled Breaking of Mummified Wood For Use In Paleoenvironmental Analysis

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    Author
    Hook, B.
    Halfar, J.
    Gedalof, Z.
    Bollmann, J.
    Issue Date
    2013-07
    Keywords
    Paleocene/Eocene transition
    non-permineralized fossil wood
    fragile wood
    surface preparation
    automated microscopic scanning
    tree-ring measurement
    wood anatomy
    dendrochronology
    paleoclimatology
    
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    Citation
    Hook, B., Halfar, J., Gedalof, Z., Bollmann, J., 2013. Controlled breaking of mummified wood for use in paleoenvironmental analysis. Tree-Ring Research 69(2):87-92.
    Publisher
    Tree-Ring Society
    Journal
    Tree-Ring Research
    URI
    http://hdl.handle.net/10150/630489
    DOI
    10.3959/1536-1098-69.2.87
    Additional Links
    http://www.treeringsociety.org
    Abstract
    The discovery of exceptionally well-preserved Paleogene wood fossils (ca. 55–53 Ma) within Canadian Arctic diamond-bearing kimberlites prompted a paleoclimatic study of the Paleocene-Eocene Transition. The samples are not petrified, but have been “mummified” by their inclusion in pyroclastic debris and still contain primordial wood material. However, preferential cellulose loss has rendered the wood very fragile, precluding the use of standard dendrochronological methods of surface preparation. Similar to archaeological charcoal, breaking the mummified wood allows superior visualization of tree-ring boundaries and wood anatomy, but often produces irregular surfaces making microscopic examination difficult. Therefore, a simple aluminum clamp was constructed to break radial wood transects in a controlled manner for the purpose of collecting dendrochronological and wood-anatomical data for paleoclimatic reconstructions. Because it does not require the use of chemical treatments or stabilizing resins, the wood remains chemically unaltered, allowing chemical and isotopic analyses to be undertaken. Future studies of fragile woods may benefit from this method of controlled breaking if sanding is ineffective.
    Language
    en
    ISSN
    2162-4585
    1536-1098
    ae974a485f413a2113503eed53cd6c53
    10.3959/1536-1098-69.2.87
    Scopus Count
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    Tree-Ring Research, Volume 69, Issue 2 (Jul 2013)

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