Example of pressure solution cleavage in silts from south Devon. The cleavage here is aligned vertically and has generated the characteristic "stripes" of this form of cleavage. Notice that the white vein has been dissolved across the solution seams and is locally buckled (indicating that the vein is less soluble than the original silt - possibly because the mineral grains in the vein are bigger). The vein can be related to the same deformation, opening up vertically as the maximum compression acted horizontally.
