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Along-axis variations in seafloor spreading in the MARK area

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Abstract

Recent investigations with the manned submersible Alvin and the Angus deep-towed camera sled greatly extended the known range of variations in the style of seafloor spreading along the axis of the Mid-Atlantic Ridge. Five transects of the spreading centre at intervals of10–20 km south of the Kane Fracture Zone at 24° N latitude demonstrate dramatic changes in the style and magnitude of tectonic extension, development of the neovolcanic zone, expression of hydrothermal venting, types oflithologic exposures and morphology of the median valley.

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Authors and Affiliations

  1. Department of Geology, Duke University, Durham, North Carolina, 27706, USA

    J. A. Karson, J. R. Brown & A. T. Winters

  2. Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, 02543, USA

    G. Thompson, S. E. Humphris, W. B. Bryan & M. M. Sulanowska

  3. Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA

    J. M. Edmond, A. C. Campbell, G. Klinkhammer, M. R. Palmer & R. J. Kinzler

  4. Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island, 02882, USA

    R. A. Pockalny

  5. Department of Geosciences, University of Houston, Houston, Texas, 77004, USA

    J. F. Casey

Authors
  1. J. A. Karson
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  2. G. Thompson
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  3. S. E. Humphris
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  4. J. M. Edmond
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  5. W. B. Bryan
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  6. J. R. Brown
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  7. A. T. Winters
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  8. R. A. Pockalny
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  9. J. F. Casey
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  10. A. C. Campbell
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  11. G. Klinkhammer
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  12. M. R. Palmer
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  13. R. J. Kinzler
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  14. M. M. Sulanowska
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Karson, J., Thompson, G., Humphris, S. et al. Along-axis variations in seafloor spreading in the MARK area. Nature 328, 681–685 (1987). https://doi.org/10.1038/328681a0

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  • DOI: https://doi.org/10.1038/328681a0

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