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[[Image:Pressure solution sandstone.svg|thumb|350px|Schematic diagram of pressure solution accommodating compression/compaction in a [[clastic rock]]. Left box shows the situation before compaction. Blue arrows indicate the flow of particles in solution. Red arrows indicate areas of maximum stress (= grain contacts). Right box shows the situation after compaction. In light coloured areas new mineral growth has reduced [[pore|pore space]].]]
'''Pressure solution''' or ''pressure dissolution'' in [[structural geology]] and [[diagenesis]] is a [[deformation mechanism]] that involves the [[Solvation|dissolution]] of minerals at grain to grain contacts into an [[Aqueous solution|aqueous]] [[Porosity|pore]] fluid in areas of relatively high [[Stress (physics)|stress]] and either deposition in regions of relatively low stress within the same rock or their complete removal from the rock within the fluid. It is an example of diffusive mass transfer <ref> Rutter, E.H. 1983. Pressure solution in nature, theory and experiment. Journal of the Geological Society, London, 140, 725-740.</ref>.
A detailed kinetics was reviewed by Rutter <ref>E. H. Rutter, The kinetics of rock formation by pressure solution,
Phi. Trans. R. Lond. A., 283, 203-219 (1976)</ref>, and since such kinetics has been extended in
many applications<ref>X. S. Yang, Pressure solution in sedimentary basins: effect of temperature gradient,
Earth Planet. Sci. Lett., 176, 233-243 (2000)</ref> in earth sciences.
==Occurrence==
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