Possible carotenoid-derived structures in fossil kerogens

Details Possible carotenoid-derived structures in fossil kerogens Possible carotenoid-derived structures in fossil kerogens

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987gecoa..51..207m&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 51, Issue 2, pp.207-211

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The unique KMnO 4 degradation products of -carotene, previously identified as 2,2-dimethyl succinic acid (C 6 ) and 2,2-dimethyl glutaric acid (C 7 ) have been found in the oxidation products of Green River shale (Eocene, 52 × 10 6 yr ) and Tasmanian Tasmanite (Permian, 220-274 × 10 6 yr ) kerogens. These two compounds were also detected in KMnO 4 degradation products of young kerogens from lacustrine and marine sediments. The results indicate that kerogens incorporated carotenoids (possibly -carotene) at the time of kerogen formation in surface sediments. Both acids are useful markers to obtain information on biological precursors contributing to the formation of fossil kerogens.

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