The release of confining pressure associated with the removal of overlying material. May result in expansion of rock, accompanied by the development of joints or sheeting . Found on https://www.encyclo.co.uk/local/22327
Unloading usually results in pressure release formations. A good example is the tilting of the UK due to the removal of ice sheets in the north. Scotland is moving upwards, southern Britain is moving downwards. The evidence can be seen in raised beaches in Scotland, which gives the past sea level.
Found on http://www.encyclo.co.uk/local/20206