sentences:  It is easily quarried and yields large free standing blocks and though soft at the time of quarrying, it has quality of hardening on exposure to the weather.The building stone represents a particular lithology of medium grained massive sandstones within the Keuper Sandstone and may not always lie at precisely the same horizon.It seems likely that the rock quarried in the northern part of the district is the lateral equivalent in part at any rate to the conglomerates of Alderley Edge which die out northwards.