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Further Rubidium-Strontium Age Determinations on the Very Early Precambrian Rocks of the Godthaab District, West Greenland

Nature Physical Science volume 240, pages 78–82 (1972)Cite this article

Abstract

A RECENT reconnaissance age and isotope study of quartzo-feldspathic Amitsoq gneisses of the Godthaab area of West Greenland1,2 showed that these rocks are older than any other terrestrial rocks yet dated. An Rb-Sr whole rock date of 3,980 ± 170 m.y. and a Pb-Pb whole rock date of 3,620 ± 100 m.y. on fourteen granitic, granodioritic and tonalitic orthogneisses, and evidence that some of these rocks contained the least radiogenic lead so far found on Earth, were presented in ref. 1.

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References

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Authors and Affiliations

  1. Department of Geology and Mineralogy, University of Oxford,

    S. MOORBATH, R. K. O'NIONS, R. J. PANKHURST & N. H. GALE

  2. Geological Survey of Greenland, Copenhagen, Denmark

    V. R. McGREGOR

Authors
  1. S. MOORBATH
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  2. R. K. O'NIONS
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  3. R. J. PANKHURST
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  4. N. H. GALE
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  5. V. R. McGREGOR
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MOORBATH, S., O'NIONS, R., PANKHURST, R. et al. Further Rubidium-Strontium Age Determinations on the Very Early Precambrian Rocks of the Godthaab District, West Greenland. Nature Physical Science 240, 78–82 (1972). https://doi.org/10.1038/physci240078a0

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