Subduction of the Chile Ridge: Upper mantle structure and flow

@article{Russo2010SubductionOT,
  title={Subduction of the Chile Ridge: Upper mantle structure and flow},
  author={Raymond M. Russo and John C. VanDecar and Diana Comte and Victor Mocanu and Alejandro Gallego and Ruth E. Murdie},
  journal={Gsa Today},
  year={2010},
  pages={4-10}
}
  • Raymond M. Russo, John C. VanDecar, +3 authors Ruth E. Murdie
  • Published 2010
  • Geology
  • Gsa Today
  • We deployed 39 broadband seismometers in southern Chile from Dec. 2004 to Feb. 2007 to determine lithosphere and upper mantle structure in the vicinity of the subducting Chile Ridge. Body-wave travel-time tomography clearly shows the existence of a long-hypothesized slab window, a gap between the subducted Nazca and Antarctic lithospheres. P-wave velocities in the slab gap are distinctly slow relative to surrounding asthenospheric mantle. Thus, the gap between slabs visible in the imaging… CONTINUE READING

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