Figure F11. Development of stiffened mantle wedge. Cooling of mantle material to the surface and to the slab in the narrow wedge causes higher viscosity so that the flow will lag. Eventually the nose becomes essentially static (after Kincaid and Sacks, 1997).

Figure F11. Development of stiffened mantle wedge. Cooling of mantle material to the surface and to the slab in the narrow wedge causes higher viscosity so that the flow will lag. Eventually the nose becomes essentially static (after Kincaid and Sacks, 1997).