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Episodic growth of the Gondwana supercontinent from hafnium and oxygen isotopes in zircon

Author

Listed:
  • A. I. S. Kemp

    (University of Bristol)

  • C. J. Hawkesworth

    (University of Bristol)

  • B. A. Paterson

    (University of Bristol)

  • P. D. Kinny

    (Curtin University of Technology)

Abstract

Developing a crust The rate of continental crust formation and the nature of the processes involved are the subjects of much debate. The crux of the problem is reconciling the apparently contradictory and incomplete information from the igneous and sedimentary rock records. To help resolve this ambiguity, Kemp et al. analysed zircons from the Gondwana supercontinent using a series of isotopic clocks. The sequential measurement of U–Pb, oxygen and Lu–Hf isotopes on the same zircon grain reveals that crust generation in Gondwana was an episodic process, challenging the notion of continuous growth inferred from radiogenic isotopes in sedimentary rocks.

Suggested Citation

  • A. I. S. Kemp & C. J. Hawkesworth & B. A. Paterson & P. D. Kinny, 2006. "Episodic growth of the Gondwana supercontinent from hafnium and oxygen isotopes in zircon," Nature, Nature, vol. 439(7076), pages 580-583, February.
  • Handle: RePEc:nat:nature:v:439:y:2006:i:7076:d:10.1038_nature04505
    DOI: 10.1038/nature04505
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