Gurney Slade quarry exhibits pale to very dark grey Carboniferous Limestone overlain by red and purple-coloured Triassic breccias and marls with a small faulted block of overlying Lower Jurassic breccias forming an angular unconformity with the Carboniferous Limestone.
The rocks contain varying amounts of calcite mineralization, and there is common fossil material associated with the Carboniferous and Jurassic limestones.
[2] Work began at the quarry in the mid 18th century and grew after it was taken over by Francis Flower and Sons in 1928 producing stone for lime-burning.
The next owner was City Sand and Gravel Co. and taken over by Morris & Perry (Gurney Slade) Ltd. who still operate the quarry.
[5] The site is now capable of supplying up to 2 Million Tonnes Per Annum of Carboniferous Limestone aggregate.