The petrology of the evaporites of the Eskdale no. 2 boring, east Yorkshire Part II. The middle evaporite bed (With Plates IX and X)

The D'Arcy Exploration Company's boring, put down in 1938-39 near Aislaby, Eskdale, passed through three Permian evaporite beds. A petrological account of the rocks of the lower evaporite bed has been given in an earlier communication (Stewart, 1949). The present paper deals with the petrography of the middle evaporite bed.