On a Local Alteration in Limestone Shales at Wensley, Derbyshire

Extract

A Small stream forms the boundary between the Parishes of Wensley and Winster, on the north-west of the former; and here abouts its bed, in the Limestone Shalc; is probably about 30 feet above the Carboniferous limestone. On the Winster side, the shales form a oded slope (Whites Wood) rising 100 feet in about 200 feet, and on this side the shale is quite normal and of the black colour usual in the lower beds of this formation. On the Wensley side the ground rises more gradually, and the actual bank of the stream averages not more than about 10 feet in height. Here, an altered shale is exposed and can be traced (through the activity of moles) in the fields behind.