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    Significance of polycyclic aromatic hydrocarbons (PAHs) in Permian/Triassic boundary sections

    Access Status
    Fulltext not available
    Authors
    Nabbefeld, Birgit
    Grice, Kliti
    Summons, R
    Hays, L
    Cao, C
    Date
    2010
    Type
    Journal Article
    
    Metadata
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    Citation
    Nabbefeld, Birgit and Grice, Kliti and Summons, R and Hays, L and Cao, C. 2010. Significance of polycyclic aromatic hydrocarbons (PAHs) in Permian/Triassic boundary sections. Applied Geochemistry 25: pp. 1374-1382.
    Source Title
    Applied Geochemistry
    DOI
    10.1016/j.apgeochem.2010.06.008
    ISSN
    0883-2927
    Faculty
    Department of Applied Chemistry
    Science and Engineering
    Remarks

    The link to the journal's home page is http://www.elsevier.com/locate/apgeochem Copyright © 2010 Elsevier B.V. All rights reserved

    URI
    http://hdl.handle.net/20.500.11937/44087
    Collection
    • Curtin Research Publications
    Abstract

    In this study the abundances of several polycyclic aromatic hydrocarbons (PAHs Table 1, I-XXI) havebeen measured throughout three Permian/Triassic (P/Tr) sections from Meishan (South China), Kap Stosch area (East Greenland) and Peace River Basin (Western Canada). Dibenzothiophene (I) and dibenzofuran (II) were found to decrease in abundance just before or shortly after the P/Tr transition in all three sections while perylene (III) was observed to increase in abundance at the onset of the main extinction horizon (bed 25) in Meishan. Perylene has been attributed to a wood degrading fungal source and, therefore, it seems possible these phenomena are related to the demise of land plants. Further, distinct patterns of various combustion-derived PAHs occurring in each section imply that forest fire events occurred within the Late Permian and Early Triassic. In the Meishan section high amounts of combustion- derived PAHs [pyrene (IV), fluoranthene (V), benzo[a]anthracene (VI), benzofluoranthenes (sum, i.e. VII), benzo[a]pyrene (VIII), benzo[e]pyrene (IX) and coronene (X)] occur within bed 25, also containing ash attributed to the fallout from massive volcanic eruptions in Siberia and/or China.

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