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Comparing Continental Carbonates with Other Materials in Dating a Paleolake

Published online by Cambridge University Press:  18 July 2016

J. F. Garcia ,
J. S. Mestres  and
Gemma Rauret
J. F. Garcia
Affiliation:
Radiocarbon Laboratory, University of Barcelona - Institut d'Estudis Catalans, C/ Diagonal 647 Barcelona 08028, Spain
J. S. Mestres
Affiliation:
Radiocarbon Laboratory, University of Barcelona - Institut d'Estudis Catalans, C/ Diagonal 647 Barcelona 08028, Spain
Gemma Rauret
Affiliation:
Radiocarbon Laboratory, University of Barcelona - Institut d'Estudis Catalans, C/ Diagonal 647 Barcelona 08028, Spain
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Abstract

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We have studied the application of carbonates and organic matter to the radiocarbon dating of a paleolake. The results show a systematic apparent age shift of these materials with respect to contemporary wood. The apparent age of carbonates is evidently due to the hard-water effect, whereas the apparent age of organic matter, systematically younger than carbonates, is attributed to aquatic plants, which metabolize dissolved CO2. Terrestrial plants that deposit organic matter also cause apparent age discrepancies between carbonates and organic matter.

Type
II. Applied Isotope Geochemistry
Information
Radiocarbon , Volume 34 , Issue 3: Proceedings of the 14th International Radiocarbon Conference , 1992 , pp. 619 - 625
Copyright
Copyright © The American Journal of Science 

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