NORTHERN SECTION. 



BASED ON THE INDEX MAPS OF THE GEOLOGICAL SURVEY 



45' 



15' 



EXI'LANATION OF COLOURING 



Vi h^ II I) 



I I onl£rrpora/i£OlJ^ 

 P nijjn. Low IJevonmjL 



County Boundaru shoujn ihui 



IE COUNTIES OF ENGLAND 



