Raisby Hill Quarry

Raisby Hill Quarry is a Site of Special Scientific Interest in east County Durham, England.

The site is a working quarry and has been designated as of national importance in the Geological Conservation Review.

[1] The quarry exposes a section through the Marl Slate and the Ford and Raisby Formations of the Upper Permian.

It is the type locality for the Raisby Formation, a carbonate unit of the English Zechstein sequence.

[1] The exposed sequence commences with the Yellow Sands, which are overlain by the Marl Slate and some 200 feet of calcareous and dolomitic limestones.