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Tag: Slab morphology

Slab tearing (sketch)

Sketch of laterally progressing slab detachment and resulting inflow of asthenospheric material into the opening gap.

Sketch of laterally progressing slab detachment. The concentration of slab pull forces towards a narrowing part of the subducted plate (slab) produces a characteristic pattern of surface-plate subsidence and uplift migrating along strike, and increases trench retreat and inflow of asthenospheric material into the gap resulting from the slab detachment.

  • Creator: Fabio Crameri
  • This version: 21.10.2022
  • License: Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
  • Specific citation: This graphic by Fabio Crameri adopted from Wortel and Spakman (2000) is available via the open-access s-Ink.org repository.
  • Related reference: Wortel, M. J. R., & Spakman, W. (2000). Subduction and slab detachment in the Mediterranean-Carpathian region. Science, 290(5498), 1910-1917.
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Slab retreat dynamics

Three different ways to allow for fast subduction trench retreat.

Sketch of three different ways to allow for fast subduction trench retreat that are flattening of the slab from side view (top left), curvature of the slab from top view for narrow (top centre) and wide subduction zones (bottom), and partial slab damage (i.e., slab window) from side view (top right). Shown are initial (grey) and end position (black) of the plate and corresponding mantle flow (blue) that displaces mantle material from its initial region (orange) to its final region (green).

  • Creator: Fabio Crameri
  • This version: 12.09.2021
  • License: Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
  • Specific citation: This graphic by Fabio Crameri from Crameri and Tackley (2014) is available via the open-access s-Ink repository.
  • Related reference: Crameri, F., and P.J. Tackley (2014), Spontaneous development of arcuate single-sided subduction in global 3-D mantle convection models with a free surface, J. Geophys. Res. Solid Earth, 119(7), 5921-5942, doi:10.1002/2014JB010939
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