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Diffusion & Pressure solution slides. Pressure solution (diffusion flow) in sandstone…. Pressure solution (diffusion flow) in sandstone…. Pressure Solution: cleavage (~ horizontal) cutting lithological layering. Image from Greg Davis’ structure resources DVD.

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Stylolites: seams of insoluble material left behind at localized sites of pressure solution

Image from Greg Davis’ structure resources DVD


At high T, crenulation cleavage develops in slates & schists by pressure solution

Image from Greg Davis’ structure resources DVD


Accretionary complexes show volume losses of 30-40% by p.s. at low stresses and temperatures of 200-400°C 1

1e.g. Ring et al, 2001; Schwarz and Stockhert, 1996



Undeformed Black Hills Sandstone (BHQ), cross polars horizontal bedding in a sandstone

~50 microns


BHQ (fast strain rate, 10^-4 /s), note strong lattice distortion, tiny rxl grains

~50 microns





BHQ (fast strain rate, 10^-4 /s), note strong lattice distortion, tiny rxl grains

~50 microns


BHQ, very low strain rate overprint of high strain rate fabric (strain energy now low)

~50 microns


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