Pressure solution is a time-dependent process because dissolving and diffusing across a grain boundary take a relatively long time. Boer et al. (1977) experimentally produced pressure solution seams by using natural quartz sand in elevated temperature for about 1 year duration. With reduced grain size of about 1 micron, which enhances the strain rate of pressure solution, Rutter and White (1979) observed permanent volume reduction of about 20% and substantial cementing overgrowth of quartz on Tennessee sandstone (85% quartz, 15% illite, plus kaolinite and oxides) for several months at 300 and 400 degree temperatures.