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Hafnium isotope evidence for a transition in the dynamics of continental growth 3.2 Gyr ago

Author

Listed:
  • T. Næraa

    (Geological Survey of Denmark and Greenland (GEUS), Øster Voldgade 10, 1350 Copenhagen K, Denmark
    Nordic Center for Earth Evolution (NordCEE), Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen K, Denmark)

  • A. Scherstén

    (Lund University, Sölvegatan 12, 223 62 Lund, Sweden)

  • M. T. Rosing

    (Nordic Center for Earth Evolution (NordCEE), Natural History Museum of Denmark, University of Copenhagen, Øster Voldgade 5-7, 1350 Copenhagen K, Denmark)

  • A. I. S. Kemp

    (Centre for Exploration Targeting, School of Earth and Environment, University of Western Australia, Crawley, WA 6009 Australia
    School of Earth and Environmental Science, James Cook University, Townsville, QLD 4811, Australia)

  • J. E. Hoffmann

    (Institut für Geologie und Mineralogie, Universität zu Köln, Zülpicher Strasse 49a, 50674 Köln, Germany
    Steinmann Institut für Geologie, Mineralogie & Paläontologie, Rheinische Wilhelms-Universität, Poppelsdorfer Schloss, 53115 Bonn, Germany)

  • T. F. Kokfelt

    (Geological Survey of Denmark and Greenland (GEUS), Øster Voldgade 10, 1350 Copenhagen K, Denmark)

  • M. J. Whitehouse

    (Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden)

Abstract

Hafnium isotope ratios obtained from zircons in southern West Greenland suggest that Earth’s ancient crustal growth changed around 3.2 Gyr ago to a modern geodynamic regime involving juvenile crust generation by plate tectonic processes.

Suggested Citation

  • T. Næraa & A. Scherstén & M. T. Rosing & A. I. S. Kemp & J. E. Hoffmann & T. F. Kokfelt & M. J. Whitehouse, 2012. "Hafnium isotope evidence for a transition in the dynamics of continental growth 3.2 Gyr ago," Nature, Nature, vol. 485(7400), pages 627-630, May.
    • Handle: RePEc:nat:nature:v:485:y:2012:i:7400:d:10.1038_nature11140
    DOI: 10.1038/nature11140
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