British Museum Natural Radiocarbon Measurements IV
- 1 January 1963
- journal article
- research article
- Published by Cambridge University Press (CUP) in Radiocarbon
- Vol. 5, 104-108
- https://doi.org/10.1017/s0033822200036821
Abstract
The following list comprises measurements made to the end of September 1961, when the equipment had to be dismantled for removal into new premises at 39 Russell Square, London W.C.1. The technique used is as described previously (Barker and Mackey, 1959) and as in previous lists, the error terms are not based solely on counting statistics but are widened to include contributions of ± 80 yr for possible isotopic fractionation effects and ± 100 yr for the de Vries-effect. NBS oxalic acid is used as the reference standard and ages are calculated on a half life of 5568 yr and expressed as years b.p. (before 1950 a.d.) and also in terms of the Christian calendar.Keywords
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