Radiocarbon Activity Variation in Dated Tree Rings Grown in Mackenzie Delta

Forty-five tree rings (1881–1925) were taken from a white spruce grown near Campbell River in Mackenzie Delta, Canada, for the measurement of 14 C activity variation. Because of the narrowness of the rings, 2 and sometimes 3 rings were combined to yield a total of 21 specimens. The 14 C content in t...

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Bibliographic Details
Published in:Radiocarbon
Main Authors: Fan, C Y, Tie-Mei, Chen, Si-Xun, Yun, Kai-Mei, Dai
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1983
Subjects:
General Earth and Planetary Sciences
Archeology
Canada
Mackenzie Delta
Online Access:http://dx.doi.org/10.1017/s003382220000549x
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S003382220000549X
Description
Summary:Forty-five tree rings (1881–1925) were taken from a white spruce grown near Campbell River in Mackenzie Delta, Canada, for the measurement of 14 C activity variation. Because of the narrowness of the rings, 2 and sometimes 3 rings were combined to yield a total of 21 specimens. The 14 C content in these specimens was measured with a liquid scintillation-PM tube counter system of the History Department of Peking University. The data points exhibit a 10‰ variation, anti-correlated with sunspot numbers. The physical implication is discussed.

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