The effects of buoyant crust on the gravitational instability of thickened mantle lithosphere at zones of intracontinental convergence

S U M M A R Y Using both numerical experiments and approximate linear theory, we examine the stability of a 2-D, three-layered viscous system that represents crust over mantle lithosphere, overlying asthenosphere. If horizontal shortening of lithosphere occurs, as in mountain building, the development of gravitational instability may follow one of two… (More)