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Seismic reflection images of a near-axis melt sill within the lower crust at the Juan de Fuca ridge

Author

Listed:
  • J. Pablo Canales

    (Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA)

  • Mladen R. Nedimović

    (Dalhousie University, Halifax, Nova Scotia B3H 4J1, Canada
    Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA)

  • Graham M. Kent

    (Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093, USA)

  • Suzanne M. Carbotte

    (Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA)

  • Robert S. Detrick

    (Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA)

Abstract

Crust accretion The style of accretion of the lower oceanic crust at mid-ocean ridges is disputed, with some models proposing that the lower oceanic crust is accreted from melt sills intruded at multiple levels within the lower crust. Until now, however, seismic images of molten sills within the lower crust have been elusive. Canales et al. report deep crustal seismic reflections off the southern Juan de Fuca Ridge, which they interpret as originating from a molten sill currently forming within the lower oceanic crust.

Suggested Citation

  • J. Pablo Canales & Mladen R. Nedimović & Graham M. Kent & Suzanne M. Carbotte & Robert S. Detrick, 2009. "Seismic reflection images of a near-axis melt sill within the lower crust at the Juan de Fuca ridge," Nature, Nature, vol. 460(7251), pages 89-93, July.
    • Handle: RePEc:nat:nature:v:460:y:2009:i:7251:d:10.1038_nature08095
    DOI: 10.1038/nature08095
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