Abstract
THE occurrence of steroid and terpenoid saturated hydrocarbons in organic sediments is well known and their geological significance has been established1–4. These steranes and terpanes represent the complete reduction of naturally occurring steroids or terpenoids to relatively stable fossil molecules which preserve intact the complete molecular skeleton and stereochemistry of their precursors. Steranes and terpanes, together with other “biological markers”, provided convincing proof for the biological origin of petroleums, oil shales, and other organic matter in sediments all over the world.
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BALOGH, B., WILSON, D., CHRISTIANSEN, P. et al. 17α(H) Hopane identified in Oil Shale of the Green River Formation (Eocene) by Carbon-13 NMR. Nature 242, 603–605 (1973). https://doi.org/10.1038/242603a0
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DOI: https://doi.org/10.1038/242603a0
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