Leeds Geological Association: local geology pages (Geology and Man)
: "The Magnesian Limestone has been worked from small quarries for use as a building stone and to be burnt for lime for agricultural purposes. The stone has not only been used locally in villages such as Bramham and Aberford, but has been worth transporting considerable distances. Most of York Minster comes from a quarry near Sherburn and it was also used in the construction of Eton School. Today a large quarry at Micklefield works the stone for aggregate."