Tonga slab deformation : The influence of a lower mantle upwelling on a slab in a young subduction zone

@inproceedings{Gurnis2000TongaSD,
  title={Tonga slab deformation : The influence of a lower mantle upwelling on a slab in a young subduction zone},
  author={Michael Gurnis and Jeroen Ritsema and Hendrik-Jan van Heijst and Shijie Zhong},
  year={2000}
}
There are fundamental geographic variations in the deformation of slabs in the transition zone. The seismic energy release and morphology of the Tonga slab show that it is deforming faster and has accumulated more deformation than any other slab. We show that Tonga overlies the edge of the large-scale Pacific superplume. There is no substantial aseismic penetration into the lower mantle beneath Tonga, consistent with initiation of subduction during the Eocene. Other major subduction systems… CONTINUE READING

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