Reports

Geochemistry and Thermolysis of Flavonoids

Science  19 Aug 1977:
Vol. 197, Issue 4305, pp. 767-769
DOI: 10.1126/science.197.4305.767

Abstract

The thermal and pH stability of selected flavonoids has been determined under simulated geologic conditions. Thermolytic rates and products for various regimes, as determined by gas chromatography—mass spectroscopy, indicate the potential usefulness of flavonoids as thermometric indicators in sediments. The parametric factors affecting flavonoid stability are used to geochemically characterize angiosperm "green leaves" (36 to 25 x 106 years old) from Succor Creek and indicate that these sediments have not experienced temperatures higher than 80°C or extreme pH shifts (beyond the range 6.3 to 7.2) during postdepositional maturation.

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