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Showing 1–12 of 12 results
Advanced filters: Author: Catherine A. Rychert Clear advanced filters

  • Imaging of the mantle transition zone beneath the Lesser Antilles shows a basalt-rich region within the subducting slab near the proposed location of a subducted extinct spreading ridge, implying ancient tectonics play a role in influencing slab trajectories.

    • Xusong Yang
    • Yujiang Xie
    • Richard Robertson
    ResearchOpen Access
    Nature
    Volume: 640, P: 697-701

  • Imaging of a region where an oceanic tectonic plate descends below another plate reveals evidence that fluid-rich extinct volcanoes can help to lubricate the interface between plates — reducing the potential for large earthquakes.

    • Catherine A. Rychert
    • Nicholas Harmon
    News & Views
    Nature
    Volume: 595, P: 178-179

  • High-resolution imaging of the base of the Pacific plate as it descends beneath New Zealand discloses a 10-kilometre-thick channel that decouples the plate from underlying upper mantle. See Letter p.85

    • Catherine A. Rychert
    News & Views
    Nature
    Volume: 518, P: 39-40

  • The precise location of the mantle plume upwelling beneath Hawaii is debated. Seismic data reveal a thick layer of melt in the mantle beneath western Hawaii, implying that the upwelling plume may be deflected around an ancient, resistive root beneath the island.

    • Catherine A. Rychert
    • Gabi Laske
    • Peter M. Shearer
    Research
    Nature Geoscience
    Volume: 6, P: 657-660

  • Continental breakup and volcanism in Afar, Africa, has been linked to mantle plume activity. Seismic imaging of the mantle beneath Afar, however, identifies an increase in seismic velocities at shallow depths that is consistent with decompression melting and magmatism in the absence of strong plume activity today.

    • Catherine A. Rychert
    • James O. S. Hammond
    • Graham Stuart
    Research
    Nature Geoscience
    Volume: 5, P: 406-409

  • Geophysical data from Chain Transform Fault reveal that broad damage zones preferentially facilitate fluid transport that cools the mantle, increasing earthquake depths. Fluids weaken the fault and segment it, limiting earthquake magnitudes.

    • Konstantinos Leptokaropoulos
    • Catherine A. Rychert
    • Satish C. Singh
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-11

  • Data from ocean bottom seismometers show that the mantle transition zone beneath the equatorial Mid-Atlantic Ridge is thin and warm, which suggests more material transfer than previously thought.

    • Matthew R. Agius
    • Catherine A. Rychert
    • J.-Michael Kendall
    Research
    Nature
    Volume: 589, P: 562-566

  • Seismic imaging of subducted plates offers a way to improve plate tectonic reconstructions. Here, Braszus et al. use new ocean-bottom seismometer data from the Lesser Antilles to locate subducted spreading centres and faults thus providing a new understanding of the evolution of the Caribbean plate.

    • Benedikt Braszus
    • Saskia Goes
    • Marjorie Wilson
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-14