Diffusion Pressure solution slides Pressure solution diffusion flow

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Diffusion & Pressure solution slides

Diffusion & Pressure solution slides

Pressure solution (diffusion flow) in sandstone…

Pressure solution (diffusion flow) in sandstone…

Pressure solution (diffusion flow) in sandstone…

Pressure solution (diffusion flow) in sandstone…

Pressure Solution: cleavage (~ horizontal) cutting lithological layering

Pressure Solution: cleavage (~ horizontal) cutting lithological layering

Image from Greg Davis’ structure resources DVD

Image from Greg Davis’ structure resources DVD

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

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

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

Accretionary complexes show volume losses of 30 -40% by p. s. at low stresses and temperatures of 200 -400°C 1 1 e. g. Ring et al, 2001; Schwarz and Stockhert, 1996

Pressure solution cleavage (top R to bottom middle) cutting horizontal bedding in a sandstone

Pressure solution cleavage (top R to bottom middle) cutting horizontal bedding in a sandstone

Undeformed Black Hills Sandstone (BHQ), cross polars ~50 microns

Undeformed Black Hills Sandstone (BHQ), cross polars ~50 microns

BHQ (fast strain rate, 10^-4 /s), note strong lattice distortion, tiny rxl grains ~50

BHQ (fast strain rate, 10^-4 /s), note strong lattice distortion, tiny rxl grains ~50 microns

BHQ, Low strain rate (10^-6), power law flow, note large rxl grains, subgrains ~50

BHQ, Low strain rate (10^-6), power law flow, note large rxl grains, subgrains ~50 microns

BHQ, same sample, gypsum plate inserted, color dominance indicates LPO ~50 microns

BHQ, same sample, gypsum plate inserted, color dominance indicates LPO ~50 microns

BHQ, undeformed, cross polars, gypsum plate inserted (No LPO) ~200 microns

BHQ, undeformed, cross polars, gypsum plate inserted (No LPO) ~200 microns

BHQ (fast strain rate, 10^-4 /s), note strong lattice distortion, tiny rxl grains ~50

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

BHQ, very low strain rate overprint of high strain rate fabric (strain energy now low) ~50 microns