The karstification of the Permian strata east of Leeds

The outcrop of Permian strata to the east of Leeds exhibits a variety of ka rstic and palaeokarstic features. The area is crossed by an extensive netwo rk of dry valley systems and lacks surface water. Two different karst types are recognized: dolomite and dolomitic limestone karst, and gypsum karst. Dolomite and dolomitic limestone karst is characterized by small isolated d olines whereas gypsum karst is characterized by large-scale dolines, many o ccurring in groups. An appreciation of the karstic nature of parts of the P ermian outcrop is becoming increasingly important because of pressure from development and waste disposal.