11. These crystals occur in a galena-wulfenite-uraniferous asphaltite horizon in a magnesian limestone . 12. High Moorsley Quarry is a Site of Special Scientific Interest for its Permian magnesian limestone formation. 13. In the undisturbed part of Raisby Hill primary magnesian limestone grassland is the main vegetation type. 14. The Magnesian Limestone and overlying boulder clay of coastal Durham by streams flowing into the North Sea. 15. The site has one of the most important expanses of primary magnesian limestone grassland in Great Britain. 16. Queens Park contains two ridges of silicified magnesian limestone running north-northwest and south-southeast. 17. Magnesian limestone grassland supports an assemblage of calcicolous plants adapted to growing in thin soils with a short sward.18. The rock is a sea stack of periclase and Magnesian Limestone which lies approximately off the main cliff face. 19. The gorge cut by the river through the Permian Magnesian Limestone can be seen most clearly at Ford Quarry. 20. It is constructed in magnesian limestone and consists of an octagonal base with a weathered shaft about in height.
