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Geological Survey of Canada Radiocarbon Dates XI

Published online by Cambridge University Press:  18 July 2016

J. A. Lowdon ,
I. M. Robertson  and
W. Blake Jr.
J. A. Lowdon
Affiliation:
Division of Quaternary Research and Geomorphology, Geological Survey of Canada, Ottawa 4, Canada
I. M. Robertson
Affiliation:
Division of Quaternary Research and Geomorphology, Geological Survey of Canada, Ottawa 4, Canada
W. Blake Jr.
Affiliation:
Division of Quaternary Research and Geomorphology, Geological Survey of Canada, Ottawa 4, Canada
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During the past year, 1969-1970, both the 2-L (Dyck and Fyles, 1962) and 5-L (Dyck et al., 1965) counters were routinely operated. A 1-L counter was finally constructed with acceptable characteristics (see description below) and was operated in July in place of the 5-L counter. The 2-L counter was operated exclusively at 2 atm. The 5-L counter was operated at 1 atm, except for October and November, 1969, when it was operated at 4 atm. The 1-L counter was operated at 1 atm.

Type
Research Article
Information
Radiocarbon , Volume 13 , Issue 2 , 1971 , pp. 255 - 324
Copyright
Copyright © The American Journal of Science 

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