A number of now-closed workings for Fuller's Earth, the montmorillonite clays have unusual degreasing and cleaning properties which have made them ideal for the purpose of 'fulling' wool. The beds here have been worked since medieval times and it has always been an important local industry. The clays are now used for cleaning oil, pharmaceuticals, and in colouring.
The clays contain occasional nodules of honey coloured barite, sometimes with associated white calcite rhombs. Fossils including ammonites (eg. Parahoplites nutfieldensis), bivalves and fossil wood are not uncommon.
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UK OS Grid Reference: TQ299506
Map Reference: 51°14'21"N , 0°8'20"W
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