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A natural pyrolysis experiment - hopanes from hopanoic acids?

Lookup NU author(s): Dr Barry Bennett, Dr Geoffrey AbbottORCiD

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Abstract

The formation or generation of hopanes are important processes during both the natural heating of organic-rich sediments and laboratory pyrolysis experiments. Molecular maturity parameters as well as the amounts (ng/g rock) of the C-31 hopanes and C-30-C-32 hopanoic acids were quantified in a Jurassic silty shale horizon (Isle of Skye, Scotland) as a function of distance from an igneous intrusion. The maturity profiles of the homohopanes and the hopanoic acids are comparable. There is also a correlation between the decreasing amounts of C-30-C-32 hopanoic acids and concomitant increases in C-29-C-31 hopanes suggesting that free hopanoic acids could be one potential source of hopanes in this particular horizon. Other possible sources could include hopanoic acids that are bound into the macromolecular fraction. (C) 1999 Elsevier Science Ltd. All rights reserved.

Publication metadata

Author(s): Bennett B, Abbott GD

Publication type: Article

Publication status: Published

Journal: Organic Geochemistry

Year: 1999

Volume: 30

Issue: 12

Pages: 1509-1516

Print publication date: 03/12/1999

ISSN (print): 0146-6380

ISSN (electronic): 1873-5290

URL: http://dx.doi.org/10.1016/S0146-6380(99)00122-9

DOI: 10.1016/S0146-6380(99)00122-9

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