DRY RIGG QUARRY, HORTON-IN-RIBBLESDALE, NORTH YORKSHIRE, UNITED KINGDOM

摘要

Redland Aggregates, Ltd., owns and operates Dry Rigg quarry (National Grid reference, NY 799 695 to 805 695) situated at Helwith Bridge near Settle in North Yorkshire, England. The (three) Lower Palaeozoic inliers to the north of the Craven Faults expose a deformed sequence of mud- stones/siltstones and greywackes/arkoses. These are quarried at Ingleton (Skirwith), Arcow and Dry Rigg quarries, respectively, by ARC, Tarmac and Redland. They supply aggregate of high (>60) polished stone value (PSV) to contractors in the North of England. Redland Aggregates has recently sunk a borehole on a quarry bench to prove the underlying formations and indicate potential reserves. It also serves to monitor any hydraulic continuity that may arise between the adjacent site of special scientific interest, Swarth Moor Bog, and the quarry. The general geology of the area is reported and predictions are made in respect of future quarrying practicalities and environmental concerns.