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    Molecular Evidence for Bacterial Mediation of Calcite Formation in Cold High-Altitude Caves

    Access Status
    Fulltext not available
    Authors
    Blyth, Alison
    Frisia, S.
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Blyth, Alison J. and Frisia, Silvia. 2008. Molecular Evidence for Bacterial Mediation of Calcite Formation in Cold High-Altitude Caves. Geomicrobiology Journal. 25 (2): pp. 101-111.
    Source Title
    Geomicrobiology Journal
    DOI
    10.1080/01490450801934938
    ISSN
    0149-0451
    URI
    http://hdl.handle.net/20.500.11937/7794
    Collection
    • Curtin Research Publications
    Abstract

    Three samples of moonmilk from high-altitude caves in northeast Italy were analysed for their lipid biomarker content, providing the first organic geochemical investigation into the relationship between cave bacterial communities and calcitic speleothems. The results demonstrate a positive association between the moonmilk deposits analysed and bacterial input, which we propose relates to bio-mediation of calcite nucleation processes. Comparison of the analysed moonmilk and a stalagmite from a geographically and climatically related cave suggest that this association is at least partially driven by the characteristics of the soil and overlying vegetation, thus demonstrating the potential use of moonmilk in palaeoenvironmental research.

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