Convection in melts due to sedimentary crystal flux from above
A Simakin, H Schmeling, V Trubitsyn - Physics of the earth and planetary …, 1997 - Elsevier
The common concept of thermal convection in a magma chamber cooling from above
involves only buoyancy due to thermal expansion of the melt neglecting the effect of a solid-
liquid phase transition. Whereas, in a crystallizing magma at equilibrium, the total effect of
crystal fractionation and cooling on the melt density is often negative, melt can become
denser only due to the presence of crystals. In this case, convection would be essentially two-
phase in nature. As an end member of this two-phase case, a 2-D model of convection …
involves only buoyancy due to thermal expansion of the melt neglecting the effect of a solid-
liquid phase transition. Whereas, in a crystallizing magma at equilibrium, the total effect of
crystal fractionation and cooling on the melt density is often negative, melt can become
denser only due to the presence of crystals. In this case, convection would be essentially two-
phase in nature. As an end member of this two-phase case, a 2-D model of convection …
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