Skip to main content
Progress in Earth and Planetary Science
Fig. 8 | Progress in Earth and Planetary Science

Fig. 8

From: Subduction initiation from a stagnant lid and global overturn: new insights from numerical models with a free surface

Fig. 8

Temporal evolution of both global, 3D spherical models with different top boundary conditions. The free-slip model (g l o b a l3) remains in stagnant-lid mode (top row), while the free surface model (g l o b a l4) produces subduction initiation and a subsequent global overturn event (bottom row). Cold plates are indicated by viscosity isosurfaces (grey) and hot mantle plumes by a temperature isosurface (red). Presented snapshots are taken at t E3=5.29 Ga, t E4−5=5.66 Ga and t E7=6.49 Ga or t E5−6=6.09 Ga. An additional movie file shows the free surface model in more detail (see Additional file 3)

Back to article page