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dc.contributor.authorAboglila, Salem
dc.contributor.authorGrice, Kliti
dc.contributor.authorTrinajstic, Kate
dc.contributor.authorSnape, C.
dc.contributor.authorWilliford, Kenneth
dc.date.accessioned2017-01-30T13:59:30Z
dc.date.available2017-01-30T13:59:30Z
dc.date.created2011-08-23T20:01:13Z
dc.date.issued2011
dc.identifier.citationAboglila, Salem and Grice, Kliti and Trinajstic, Kate and Snape, C. and Williford, Kenneth. 2011. The significance of 24-norcholestanes, 4-methylsteranes and dinosteranes in oils and source-rocks from East Sirte Basin (Libya). Applied Geochemistry. 26 (9-10): pp. 1694-1705.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/37081
dc.identifier.doi10.1016/j.apgeochem.2011.04.026
dc.description.abstract

The present paper involves a detailed evaluation of specific steroid biomarkers by gas chromatography-mass spectrometry (GC-MS) and GC-metastable reaction monitoring (MRM) analyses of several crude oils and source rocks from the East Sirte Basin. 24-Norcholestanes, dinosteranes, 4a-methyl-24-ethylcholestanes and triaromatic steroids have been identified in both source-rocks and crude oils of the East Sirte Basin. Diatoms, dinoflagellates (including those potentially associated with corals) and/or their direct ancestors are amongst the proposed sources of these biomarkers. These biomarker parameters have been used to establish a Mesozoic oil-source correlation of the East Sirte Basin. Hydropyrolysis of an extant coral extract revealed a similar distribution (although immature) of dinosteranes and 4a-methyl-24-ethylcholestanes also observed in the Sirte oils and source-rocks. This is consistent with the presence of dinoflagellates present during the deposition of the Mesozoic aged East Sirte Basin Formations.A good data correlation for the rock extracts revealed a similar distribution of 3,24-dimethyl triaromatic steroids, 3-methyl-24-ethylcholestanes, 4-methyl-24-ethylcholestanes and 2-methyl-24-ethylcholestanes observed in one of the oil families and associated source-rocks for the East Sirte Basin.

dc.publisherElsevier
dc.subjectEast Sirte Basin
dc.subject4-methylsteranes
dc.subject24-norcholestanes
dc.subjectdinosteranes
dc.titleThe significance of 24-norcholestanes, 4-methylsteranes and dinosteranes in oils and source-rocks from East Sirte Basin (Libya)
dc.typeJournal Article
dcterms.source.volume26
dcterms.source.startPage1694
dcterms.source.endPage1705
dcterms.source.issn0883-2927
dcterms.source.titleApplied Geochemistry
curtin.note

NOTICE: This is the author's version of a work that was accepted for publication in Applied Geochemistry. Changes resulting form the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Geochemistry, 26, 9-10, 2011. DOI: 10.1016/japgeochem.2011.04.026

curtin.departmentDepartment of Applied Chemistry
curtin.accessStatusOpen access


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