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Evidence from earthquakes for bookshelf faulting at large non-transform ridge offsets

Nature volume 362, pages 235–237 (1993)Cite this article

Abstract

MIGRATING non-transform offsets, which occur along mid-ocean ridges when a propagating segment gradually elongates and takes over spreading from a neighbouring 'doomed' rift segment1–3, represent a significant modification of the plate tectonic paradigm4. The migrating offset zone between the two spreading segments is clearly a locus of significant deformation, but the mechanism of this deformation has been controversial. Here we use the source parameters and locations of earthquakes at such offsets to discriminate between previously proposed models2,4–7. Earthquakes at large non-transform offsets at medium and fast spreading rates show strike-slip mechanisms, with nodal planes rotated relative to the expected transform fault orientation. One set of nodal planes (presumably corresponding to the fault planes) is parallel to curved sea-floor lineaments which show increased rotation as a function of position in the deforming zone. A bookshelf faulting model in which initially ridge-parallel faults are rotated by simple shear is consistent with the observed lineament orientations, focal mechanisms and earthquake distributions.

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References

  1. Hey, R. Earth planet. Sci. Lett. 37, 321–325 (1977).

    Article  ADS  Google Scholar 

  2. Hey, R., Duennebier, F. K. & Morgan, W. J. J. geophys. Res. 85, 3647–3658 (1980).

    Article  ADS  Google Scholar 

  3. Hey, R. N., Kleinrock, M. C., Miller, S. P., Atwater, T. M. & Searle, R. C. J. geophys. Res. 91, 3369–3393 (1986).

    Article  ADS  Google Scholar 

  4. McKenzie, D. Earth planet. Sci. Lett. 77, 176–186 (1986).

    Article  ADS  Google Scholar 

  5. Acton, G., Stein, S. & Engeln, J. F. J. geophys. Res. 93, 11845–11861 (1988).

    Article  ADS  Google Scholar 

  6. Kleinrock, M. C. & Hey, R. N. J. geophys. Res. 94, 13859–13878 (1989).

    Article  ADS  Google Scholar 

  7. Phipps Morgan, J. & Kleinrock, M. C. Tectonics 10, 920–935 (1991).

    Article  ADS  Google Scholar 

  8. Freund, R. Tectonophysics 21, 93–134 (1974).

    Article  ADS  Google Scholar 

  9. Nur, A., Ron, H. & Scotti, O. Geology 14, 746–749 (1986).

    Article  ADS  Google Scholar 

  10. Mandl, G. Tectonophysics 141, 277–316 (1987).

    Article  ADS  Google Scholar 

  11. Einarsson, P. S., Bjornsson, G., Foulger, R., Stefansson, R. & Skaftadottir, T. in Earthquake Prediction—An International Review (eds Simpson, D. & Richards, P.) 141–151 (American Geophysical Union, Washington, DC, 1981).

    Google Scholar 

  12. Einarsson, P. Tectonophysics 189, 261–279 (1991).

    Article  ADS  Google Scholar 

  13. Tapponnier, P., Armijo, R., Manighetti, I. & Courtillot, V. Geophys. Res. Lett. 17, 1–4 (1990).

    Article  ADS  Google Scholar 

  14. Jordan, T. H. & Sverdrup, K. A. Bull. seism. Soc. Am. 71, 1105–1130 (1981).

    Google Scholar 

  15. Langston, C. A. & Helmberger, D. V. Geophys. J. R. Astr. Soc. 42, 117–130 (1975).

    Article  Google Scholar 

  16. Nabelek, J. L. Determination of Earthquake Source Parameters from Inversion of Body Waves (Massachusetts Institute of Technology, 1984).

    Google Scholar 

  17. Pelayo, A. M. & Wiens, D. A. J. geophys. Res. 94, 7293–7320 (1989).

    Article  ADS  Google Scholar 

  18. Fuchs, K. & Muller, G. Geophys. J. R. Astr. Soc. 23, 417–433 (1971).

    Article  ADS  Google Scholar 

  19. Kind, R. J. Geophys. 44, 603–612 (1978).

    Google Scholar 

  20. Kennett, B. L. N. Seismic Wave Propagation in Stratified Media, 1–339 (Cambridge Univ. Press, Cambridge, 1983).

    Google Scholar 

  21. Dziewonski, A. M., Chou, T. & Woodhouse, J. H. J. geophys. Res. 86, 2825–2852 (1981).

    Article  ADS  Google Scholar 

  22. Parson, L. M., Pearce, J. A., Murton, B. J., Hodkinson, R. A. & Party, R. C. D. S. Geology 18, 470–473 (1990).

    Article  ADS  Google Scholar 

  23. Klaus, A., Icay, W., Naar, D. F. & Hey, R. N. J. geophys. Res. 96, 9985–9998 (1991).

    Article  ADS  Google Scholar 

  24. Hey, R. & Vogt, P. Tectonophysics 37, 41–52 (1977).

    Article  ADS  Google Scholar 

  25. Cooper, P. A., Milholland, P. D. & Duennebier, F. K. J. geophys. Res. 92, 14091–14112 (1987).

    Article  ADS  Google Scholar 

  26. Lonsdale, P. J. geophys. Res. 94, 713–743 (1989).

    Article  ADS  Google Scholar 

  27. Macdonald, K. C. & Luyendyk, B. P. Geol. Soc. Am. Bull. 88, 621–636 (1977); Mar. geophys. Res. 7, 515–535 (1985).

    Article  ADS  Google Scholar 

  28. Perram, L. J. & Macdonald, K. C. Eos 69, 1425 (1988).

    Google Scholar 

  29. Searle, R. C. Mar. geophys. Res. 11, 15–26 (1989).

    Article  Google Scholar 

  30. Lonsdale, P. in The Eastern Pacific Ocean and Hawaii (eds Winterer, E. L., Hussong, D. M. & Decker, R. W.) 499–521 (Geological Society of America, Boulder, Colorado, 1989).

    Google Scholar 

  31. DeMets, C., Gordon, R. G., Argus, D. F. & Stein, S. Geophys. J. int. 101, 425–478 (1990).

    Article  ADS  Google Scholar 

  32. DeMets, C. & Stein, S. J. geophys. Res. 95, 21931–21948 (1990).

    Article  ADS  Google Scholar 

  33. Bevis, M. et al. Eos 72, 115 (1991).

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Earth and Planetary Sciences, Washington University, St Louis, Missouri, 63130, USA

    Laura Reiser Wetzel & Douglas A. Wiens

  2. Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, 02543, USA

    Martin C. Kleinrock

Authors
  1. Laura Reiser Wetzel
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  2. Douglas A. Wiens
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  3. Martin C. Kleinrock
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Wetzel, L., Wiens, D. & Kleinrock, M. Evidence from earthquakes for bookshelf faulting at large non-transform ridge offsets. Nature 362, 235–237 (1993). https://doi.org/10.1038/362235a0

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