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Isotopic Fractionation of Carbon During CO2 Absorption by Mortar

Published online by Cambridge University Press:  18 July 2016

Christiane Pachiaudi ,
Joelle Marechal ,
Mark Van Strydonck ,
Michel Dupas  and
Michelle Dauchot-Dehon
Christiane Pachiaudi
Affiliation:
Centre de Datations et d'Analyses Isotopiques, Université Claude Bernard, Lyon, France
Joelle Marechal
Affiliation:
Centre de Datations et d'Analyses Isotopiques, Université Claude Bernard, Lyon, France
Mark Van Strydonck
Affiliation:
Institut Royal du Patrimoine Artistique, Brussels, Belgium
Michel Dupas
Affiliation:
Institut Royal du Patrimoine Artistique, Brussels, Belgium
Michelle Dauchot-Dehon
Affiliation:
Institut Royal du Patrimoine Artistique, Brussels, Belgium
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Recent studies comparing dates from the carbon content of mortars with dendrochronologic dates for the same material have shown considerable inconsistencies related to mortar type (Van Strydonck et al, 1985). Even after the best possible removal of “dead” calcite, some mortars are unsuitable for dating. We describe here our experimental study of carbon isotope fractionation during the manufacture and hardening of mortars. Preliminary experiments established overall uptake of CO2 from the air. We then measured isotopic ratios in identical mortars at different hardening times.

Type
VII. Applications in Archaeology
Information
Radiocarbon , Volume 28 , Issue 2A , 1986 , pp. 691 - 697
Copyright
Copyright © The American Journal of Science 

References

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