Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Stable hydrogen isotopic composition of hydrocarbons in torbanites (Late Carboniferous to Late Permian) deposited under various climatic conditions

    Access Status
    Fulltext not available
    Authors
    Dawson, Daniel
    Grice, Kliti
    Wang, Sue
    Alexander, Robert
    Date
    2004
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Dawson, Daniel and Grice, Kliti and Wang, Sue xuan and Alexander, Robert. 2004. Stable hydrogen isotopic composition of hydrocarbons in torbanites (Late Carboniferous to Late Permian) deposited under various climatic conditions. Organic Geochemistry. 35 (2): pp. 189-197.
    Source Title
    Organic Geochemistry
    DOI
    10.1016/j.orggeochem.2003.09.004
    ISSN
    0146-6380
    Faculty
    Department of Applied Chemistry
    School of Science
    Faculty of Science and Engineering
    Remarks

    The link to the journal’s home page is: http://www.elsevier.com/wps/find/journaldescription.cws_home/476/description#description

    Copyright © 2004 Elsevier Ltd. All rights reserved

    URI
    http://hdl.handle.net/20.500.11937/12940
    Collection
    • Curtin Research Publications
    Abstract

    We measured the stable hydrogen isotopic composition (δD) of selected aliphatic compounds in torbanites from Scotland and Australia, covering the Late Carboniferous to the Late Permian. The torbanites contain organic matter predominantly from a single algal source, Botryococcus braunii, and are of similar thermal maturity. The δD values of n-alkanes in the extracts appear to reflect the depositional palaeoclimate of each torbanite, in response to the typical δD values of meteoric waters. The δD values of n-alkanes in torbanites deposited at high latitude under glacial conditionsare depleted in deuterium by up to 70% relative to n-alkanes in a torbanite deposited at low latitude under a tropical climate regime. Torbanites deposited in mid-latitude regions under cool-temperature conditions contain n-alkanes with δD values between those of n-alkanes in tropical and glacial sediments. A saw-toothed profile of δD values obtained for the n-alkanes in the Australian torbanites is attributed to a dual-source system, perhaps a predominant B. braunii input with a second minor contribution from land plants. Pristane and phytane from two Australian torbanites are significantly depleted in deuterium relative to n-alkanes in the same samples and a significant difference between the δD values of pristane and phytane is suggested to be caused by different sources for the two isoprenoids, or isotope effects associated with their derivation from a common phytol precursor. The offset between the δD of values of n-alkanes and isoprenoids is similar to that found in modern biological samples, indicating that their indigenous δD signatures may have been preserved for at least 260-280 million years.

    Related items

    Showing items related by title, author, creator and subject.

    • Stable hydrogen isotope ratios of individual hydrocarbons in sediments and petroleum
      Dawson, Daniel (2006)
      Early research into the stable hydrogen isotopic compositions (δD) of petroleum involved bulk deuterium/hydrogen (D/H) measurements which, while providing some useful information, had to contend with the analysis of complex ...
    • Factors controlling the abundance and carbon isotopic composition of land-plant derived compounds in crude oils.
      Murray, Andrew P. (1998)
      This thesis describes a study in petroleum geochemistry and specifically of the application of Land-plant derived hydrocarbons to elucidating source matter type, depositional environment and thermal maturity of crude oils. ...
    • Distributions and stable carbon isotopic compositions of biomarkers in torbanites from different palaeogeographical locations
      Grice, Kliti; Audino, Michiele; Alexander, Robert; Kagi, Robert (2001)
      The relative distributions and stable carbon isotopic compositions of certain aliphatic and aromatic biomarkers from 11 Botryococcus braunii rich torbanites from Scotland, South Africa and Australia covering the Late ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.