Kinetics of dissolution of mechanically comminuted rock-forming oxides and silicates—II. Deformation and dissolution of oxides and silicates in the laboratory and at the Earth's surface

摘要: Abstract Comparison of the patterns fracture under tensile stress, indentation, and scratching periclase. quartz, corundum indicates that properties relevant to dissolution rock-forming oxides non-layer silicates should be changed by mechanical comminution in essentially same way as those quartz. The changes are accomplished brittle component stress field, which does not generate subsurface damage, microplastic behavior local stresses with high net compressive shear components, does. Mechanical therefore affect apparent rates (rates calculated respect initial interface area) it affects rate This is supported available evidence on effect dry grinding kinetics feldspars, pyroxenes, olivines aqueous solutions. Different effects solubilities constants can related certain measured or considered minerals. Notably, grain size constant rigorously Kelvin effect. at bases dry-based glaciers highgradient segments streams, high-energy coastal epeiric environments, sandy deserts such significantly simultaneous subsequent comminuted material.