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University of California, San Diego

Published online by Cambridge University Press:  03 June 2021

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Abstract

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Copyright © The American Journal of Science

References

1 Reference standard is 19th-century wood, not significantly different from 0.95 NBS oxalic acid; carbonate samples are also referred to this standard without correction for isotopic fractionation. Values of SC14 can therefore be back-calculated from the dates as published, and have not been entered in column 5.

2 Samples omitted from this list are mainly geochemical measurements, published out of series; see ref. 155, p. 66, for references to some of them.

3 Shell or other carbonate sample (see footnote 1).

4 Modern sample, marine, taken alive.

5 Sea water carbonate, coll. 1959.

6 Sea water carbonate, coll. 1963