Figure 3
Temperature, viscosity and rock composition distributions after 15 Ma of evolution for the tectonic scenarios presented in Fig. 2 (Model 1, Model 2). (A) Model 1 describes steep dip subduction and is not consistent with PHS slab geometry beneath the Chugoku and Shikoku regions6,10,11. (B) Model 2 shows shallow subduction and high agreement with PHS slab geometry beneath the Chugoku and Shikoku regions6,10,11. Solid curves in black represent slab geometry for the 2D profile across the Shikoku and Chugoku regions6,10,11. Reversed black triangles with a colored circle on top show the predicted position of the trough. This figure is created using Matlab R2022 and Corel Draw 2022.
