Area: 2.01 hectares.
Description and Reasons for Notification:
This is a Geological Conservation Review Site.
Coryton Quarry lies about four kilometres west of the village of Lydford on the north-western margins of Dartmoor.
This disused quarry, formerly worked from partially underground galleries, provides important exposures of upper Visean limestones and shales which have been recumbently folded on a large scale. Bedding is subvertical, dipping and younging towards the north. One gallery in particular demonstrates the hinge zone of a major north facing recumbent fold. Large scale mullion structures, and a non-axial planar cleavage form, can be observed. This provides an important demonstration of structures developed during the Variscan orogenic episode and in particular gives unequivocal evidence of fold facing directions for this region.