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

  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},
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


Publications referenced by this paper.
Showing 1-10 of 20 references

Eocene arc – continent collision in New Caledonia and implications for regional southwest Pacific tectonic evolution

J. C. Aitchison, G. L. Clake, S. Meffre, D. Cluzel
View 5 Excerpts
Highly Influenced

The distribution of earthquakes with depth and stress in subducting slabs

M. S. Vassiliou, B. H. Hager, A. Raefsky
View 2 Excerpts
Highly Influenced

The interaction of a subduction lithosphere slab with a chemical or phase boundary

U. R. Christensen, D. A. Yuen
J . Geophys . Res . • 1984
View 1 Excerpt
Highly Influenced

Focal mechanisms and seismic energy release of deep and intermediate earthquakes in the Tonga - Kermadec region and their bearing on the depth extent of mantle flow

F. M. Richter
J . Geophys . Res . • 1979
View 1 Excerpt
Highly Influenced

Geochemistry and tectonic significance of basalts in the Poya Terrane

J-P. Eissen, A. J. Crawford, +3 authors M. Delaune
View 1 Excerpt

Global tele - seismic earthquake relocation with improved travel times and procedures for depth - determination

E. R. Engdahl, R. van der Hilst, R. Buland
Bull . Seism . Soc . Am . • 1998

Early Cretaceous volcano - sedimentary successions along the eastern Australian continental margin : Implications for the break - up of eastern Gondwana

S. E. Bryan, A. Constantine, +3 authors J. Parianos
Earth Planet . Sci . Lett . • 1997
View 1 Excerpt

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