The Cressbrook Dale Lava and Litton Tuff, between Longstone and Hucklow Edges, Derbyshire

With only a small exposure near the head of its eponymous dale, the Cressbrook Dale Lava is the least exposed of the major lava flows interbedded within the Carboniferous platform-carbonate succession of the Derbyshire Peak District. It underlies a large area of the limestone plateau between Longstone Edge and the Eyam and Hucklow edges. The recent closure of all of the quarries and underground mines in this area provided a stimulus to locate and compile the existing subsurface information relating to the lava-field and, supplemented by airborne geophysical survey results, to use these data to interpret the buried volcanic landscape. The same sub-surface data-set is used to interpret the spatial distribution of the overlying Litton Tuff.