Browsing Radiocarbon, Volume 43, Number 2A (2001 by Authors
An Improvement in Preparation of Mortar for Radiocarbon DatingSonninen, E.; Jungner, H. (Department of Geosciences, The University of Arizona, 2001-01-01)An error source in radiocarbon dating of ancient mortar is dead carbon of limestone mixed in the matrix. To eliminate the influence of limestone the difference in feasibility to react with acid between mortar and limestone is used. Since the rate of reaction depends on grain size use of a well-defined grain size can give a better separation between mortar and limestone. We present results for the grain size dependence of reaction rates for several mortar and limestone samples and discuss the application for dating.