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A three-dimensional seismic image of the crust and upper mantle beneath the Kenya rift

Nature volume 354, pages 199203 (21 November 1991) | Download Citation

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Abstract

A tomographic image of the seismic structure beneath the Kenya rift shows its three-dimensional character. In the lower crust, an axial zone of high seismic velocity varies in width and magnitude along the axis, suggesting that the amount of crustal modification also varies along the length of the rift. In the upper mantle, a steep-sided low-velocity body indicates the presence of partial melt, and its shape suggests that diapirs rise from a narrow wedge of asthenosphere beneath the rift axis in response to extension by pure shear.

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References

  1. 1.

    , , & Nature 229, 69–71 (1971).

  2. 2.

    & Tectonophysics 15, 157–165 (1972).

  3. 3.

    & Tectonophysics 20, 283–293 (1973).

  4. 4.

    KRISP Working Group Nature 325, 239–242 (1987).

  5. 5.

    et al. Geophys. J. Int. 100, 107–130 (1990).

  6. 6.

    et al. Bull. Seism. Soc. Am. 58, 1193–1241 (1968).

  7. 7.

    & Tectonophysics (in the press).

  8. 8.

    , & J. Afric. Earth Sci. 8, 461–470 (1989).

  9. 9.

    & Geophys. J. R. astr. Soc. 82, 461–477 (1985).

  10. 10.

    Geol. Soc. Lond Spec. Publ. 25, 45–57 (1986).

  11. 11.

    , , & Nature 224, 1178–1182 (1969).

  12. 12.

    Geophys. J. R. astr. Soc. 21, 13–31 (1970).

  13. 13.

    & Nature 229, 72–75 (1971).

  14. 14.

    & Nature 229, 538–542 (1971).

  15. 15.

    Tectonophysics 30, 269–298 (1976).

  16. 16.

    , & EOS Trans. Am. geophys. Un. 67, 577–583 (1986).

  17. 17.

    Geology 15, 397–400 (1987).

  18. 18.

    , & J. Geol. Soc. Am. 136, 67 (1972).

  19. 19.

    , & J. geophys. Res. 82, 277–296 (1977).

  20. 20.

    & J. geophys. Res. 82, 5379–5394 (1977).

  21. 21.

    , , & J. geophys. Res. 91, 13873–13891 (1986).

  22. 22.

    Geophys. J. R. astr. Soc. 80, 73–93 (1985).

  23. 23.

    Geol. Soc. Spec. Publ. 30, 293–311 (1987).

  24. 24.

    Geol. Soc. Spec. Publ. 30, 313–333 (1987).

  25. 25.

    J. geophys. Res. 85, 5173–5189 (1980).

  26. 26.

    , & J. geophys. Res. 94, 5689–5704 (1989).

  27. 27.

    Tectonophysics (in the press).

  28. 28.

    & Geophys. Res. Lett. 5, 419–421 (1978).

  29. 29.

    EOS, Trans. Am. geophys. Un. 68, 721–736 (1987).

  30. 30.

    & J. geophys. Res. 94, 7685–7729 (1989).

  31. 31.

    Earth & Planet. Sci. Lett. 104, 398–416 (1991).

  32. 32.

    Geophys. J. R. astr. Soc. 80, 95–120 (1985).

  33. 33.

    Earth planet. Sci. Lett. 74, 81–91 (1985).

  34. 34.

    & J. Afric. Earth Sci. 8, 431–453 (1989).

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Affiliations

  1. Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706 USA

    • W.Verney Green
    •  & Robert P. Meyer
  2. Geophysics Institute, University of Karlsruhe, D-7500 Karlsruhe, Germany

    • Ulrich Achauer

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https://doi.org/10.1038/354199a0

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