The significance of 24-norcholestanes, 4-methylsteranes and dinosteranes in oils and source-rocks from East Sirte Basin (Libya)

S. Aboglila, K. Grice, K. Trinajstic, C. Snape, K.H. Williford
  • Applied Geochemistry, September 2011, Elsevier
  • DOI: 10.1016/j.apgeochem.2011.04.026

What is it about?

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 (Burwood et al., 2003; Aboglila et al., 2011, in press).

Why is it important?

Abundant dinosteranes, 4a-methyl-24-ethylcholestanes and various triaromatic steroids provided evidence for a source contribution from dinoflagellates deposited during the Mesozoic.


Professor Salem Aboglila
University of Tripoli

Eukaryotic steroids are the most commonly occurring polycyclic biomarkers in the geologic record. The most important components of Eukaryotic cell membranes include sterols (e.g. cholesterol, ergosterol and sitosterol).

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The following have contributed to this page: Professor Salem Aboglila