Sedimentary rock composed of consolidated sand or grit bound together, with a high silica or calcite content. It can be soft and easily damaged by rain, etc., or it can be very hard. It has a good range of colours, varying from the blue and brown Appleton stones from Yorks. to the salmon-pink Locharbriggs stone from Dumfries, or the red Woolton stone from Liverpool.
W. McKay (1957)
Subjects: Science and Mathematics — Architecture.