Abstract
An inspection of the available data on geological ages determined by the lead method shows that in two areas the pegmatite ages appear to be considerably greater than those of any other Pre-Cambrian pegmatites so far determined. These two areas are located in northern Karelia and south-east Manitoba, Canada.
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References
Khlopin, V. G., and Vladimirova, M. E., Bull. Acad. Sci. U.R.S.S. (C1. Math. Nat.), 499 (1938).
Wickman, F. E., Sver. Geol. Unders., Ser. C., No. 458 (1944).
Nier, A. O., Phys. Rev., 55, 153 (1938).
Nier, A. O., Phys. Rev., 60, No. 2, 112 (1941).
Eklund, S., Arkiv. Mat., Astron. Phys., A, 33, No. 14, 79 (1946).
Strassmann, and Walling, E., Ber., B, 71, 1 (1938).
Mattauch, J., Naturwiss., 25, 189 (1937).
Goodman, C., and Evans, R. D., Bull. Geol. Soc. Amer., 52, 537 (1941).
Ahrens, L. H., Trans. Geol. Soc. S. Afr., in the press.
Mattauch, J., Angew. Chem., A, No. 2, 37 (1947).
Brewer, A. K., J. Amer. Chem. Soc., 60, 691 (1938).
Ahrens, L. H., in the press.
Wright, J. F., Canada Geol. Surv., Memoir 169, 12 (1932).
Holmes, A., Nature, 159, 127 (1947).
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AHRENS, L. Geological Age: the Extreme Antiquity of Pegmatites from Manitoba. Nature 160, 874–875 (1947). https://doi.org/10.1038/160874b0
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DOI: https://doi.org/10.1038/160874b0
