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Belfast Radiocarbon Dates III

Published online by Cambridge University Press:  18 July 2016

A. G. Smith ,
G. W. Pearson  and
J. R. Pilcher
A. G. Smith
Affiliation:
Palaeoecology Laboratory, Queen's University, Belfast, Northern Ireland
G. W. Pearson
Affiliation:
Palaeoecology Laboratory, Queen's University, Belfast, Northern Ireland
J. R. Pilcher
Affiliation:
Palaeoecology Laboratory, Queen's University, Belfast, Northern Ireland
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The dating equipment in the Palaeoecology Laboratory remains essentially as described in R., 1970, v. 12, p. 285–290, and the operating conditions as described in R., 1970, v. 12, p. 291–297. Small samples, however, have been counted at a filling pressure equivalent to 152 cm Hg at 20°C. Charcoal samples pretreated by nitration have been treated as described in R., 1970, v. 12, p. 285–290. Other charcoal samples have been pretreated using the following technique developed by P. Q. Dresser: samples are washed in 5% sodium hydroxide; this is followed by treatment in a solution composed of 8% potassium permanganate and 10% sulphuric acid, at 80°C for 20 mins, to remove residual rootlets and organic matter. Unless specifically stated, the samples have been collected by the authors and other members of the Laboratory: M. G. L. Baillie, P. Q. Dresser, Adelaide Goddard, and I. Goddard. Where a sample has been collected for a specific research project the collector's initials are given. Routine operation of the dating apparatus has been carried out by Mrs. Marilyn Carse and Mrs. Florence Qua to whom we are much indebted.

Type
Research Article
Information
Radiocarbon , Volume 13 , Issue 1 , 1971 , pp. 103 - 125
Copyright
Copyright © The American Journal of Science 

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