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    Occurrence and distribution of series long-chain alkyl naphthalenes in Late Cretaceous sedimentary rocks of the Songliao Basin, China

    Access Status
    Fulltext not available
    Authors
    Lu, H.
    Wang, L.
    Song, Z.
    Greenwood, Paul
    Yin, Q.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Lu, H. and Wang, L. and Song, Z. and Greenwood, P. and Yin, Q. 2011. Occurrence and distribution of series long-chain alkyl naphthalenes in Late Cretaceous sedimentary rocks of the Songliao Basin, China. Geochemical Journal. 45 (2): pp. 125-135.
    Source Title
    Geochemical Journal
    ISSN
    0016-7002
    School
    Department of Chemistry
    URI
    http://hdl.handle.net/20.500.11937/58587
    Collection
    • Curtin Research Publications
    Abstract

    A pair of series straight long-chain 2- and 1-alkyl naphthalenes (aNs) with alkyl chain carbon number up to 30 was detected in late Cretaceous sedimentary source rocks of the onshore Songliao Basin, NE China. Their sedimentary profile was shown to correlate positively with the relative abundances of several higher plant biomarkers including iP-iHMN and phenanthrene and weakly inversely with the relative abundance of alkylbenzenes. In contrast, the aNs distribution shows no relationship with hydrocarbon maturity indicators. The TOC, d13C profile and other molecular features (e.g., CPI, OEP, Pr/Ph, Ga/C31H) were consistent with transgressive/regressive water cycles of the palaeo-lake of Songliao Basin. Decreasing Pr/Ph values in the upper horizon indicative of increasingly anoxic conditions. The distinctive occurrence and distribution of the long-chain aN compounds on the profile of the SK-1 borehole may imply some unique source inputs under particular lacustrine environmental conditions. Copyright © 2011 by The Geochemical Society of Japan.

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