Skiddaw slate is an early Ordovician metamorphosed sedimentary rock, as first identified on the slopes of Skiddaw in the English Lake District.
These sediments were formed about 500 mya by deposition in a shallow sea,[1] low-energy environment.
The series contains differing grain sizes and comprises grits, flags, shales and mudstones.
The traditional buildings of Keswick and other settlements are almost entirely of Skiddaw slate.
This article about a specific stratigraphic formation in the United Kingdom is a stub.