1. Permian and Triassic;Arthurton,1978
2. * Colter V. S. Reed G. E. 1980. Zechstein 2 Fordon Evaporites of the Atwick No. 1 Borehole, surrounding areas of N.E. England and the adjacent southern North Sea. Pp. 115–129 in Fuchtbauer H. Peryt T. M. (editors) q.v.
3. Cooper A. H. 1987. The Permian rocks of the Harrogate district; geological notes and local details of 1:50,000 Sheet 62. British Geological Survey, Keyworth.
4. Cooper A. H. 1987. The Permian rocks of the Thirsk district; geological notes and local details of 1:50,000 Sheet 52. British Geological Survey, Keyworth.
5. On the Magnesian Limestone of Durham;Daglish;Transactions of the Northern England Institute of Mining Engineers,1864