- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
The break between Triassic and older rocks of the western margin of the North Staffordshire coal field and elsewhere in England has generally been considered a fault, known as the Red Rock fault for about a century. Occasionally it has been interpreted as a simple unconformity. A review of published data and field observations indicate that the fault nature of the break has yet to be established.