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AL MAP BASED ON THE MAPS OF THE GEOLOGICAL SURVEY EXPLANATION Of COLOURING RECENT! Mburuan. Oxford, day CombrasK Great OoUie Series Inferior Oolite Upper Lias M-UUl&Lias Lower Lias Keeper Red Marh Sandstone Bunfer- Sandswne and Pebble Beds Maqnesia/i. Lung, stone fcnwia anJ Sandstone, Coal Measures i Grit Ton-dale Carboniferous Limestone PRE- I I Pre. -wmbriari and CAMBRIAN | -_ MetamorptvUi County Boundary shown thus COUNTI ES OF ENGLAND
