The use of hydroxyacids as geochemical indicators

Details The use of hydroxyacids as geochemical indicators The use of hydroxyacids as geochemical indicators

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47..723c&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 47, April 1983, p. 723-730. Research supported by the Nuffield Foundation

Biology

1

Biogeochemistry, Hydroxyl Compounds, Organic Chemistry, Paleobiology, Plants (Botany), Sediments, Abundance, Acids, Gas Chromatography, Geochronology, Mass Spectroscopy, Microorganisms, Shale Oil

Scientific paper

The distributions of hydroxyacids in a variety of recent and ancient sediments have been determined by gas chromatography-mass spectrometry. A lacustrine sediment (Rostherne Mere, U.K.) and two marine situations (Cariaco Trench, Black Sea) were analyzed as examples of recent depositional environments. Beta-hydroxyacids occurred in all of the recent sediments, consistent with their presumed microbial origin, whereas di- and trihydroxyacids were present in the sediments with a significant higher plant input (Black Sea and Rostherne Mere sediments). The two ancient (Eocene) sediments examined, viz, the Greene River (U.S.) and Messel (Germany) oil shales, contained only trace amounts of hydroxyacids. These results provide evidence that hydroxyacids are in general not well preserved over geological time.

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