"1:50,000 Geological Maps" (Map). Sheet E029, Keswick (Solid). British Geological Survey. 1999. ISBN0751832294. - may be viewed on the "Geology of Britain viewer". British Geological Survey. Archived from the original on 16 January 2013. Retrieved 6 April 2014. or on the BGS's iGeology smartphone app
"1:50,000 Geological Maps" (Map). Sheet E029, Keswick (Solid). British Geological Survey. 1999. ISBN0751832294. - may be viewed on the "Geology of Britain viewer". British Geological Survey. Archived from the original on 16 January 2013. Retrieved 6 April 2014. or on the BGS's iGeology smartphone app