yUART. JOURN. brEOL. bOC 



CHALK ESCARPMENT 



Gt. Mis 



alk ™' sb °vn> 



to the Chilterns and the Thames valley 

 o the west. 



CHALK ESCARPMENT 

 837 



CHALK *'"*" \Vy t 



Gt?E£NSAND 



er Cherwell is to the east. 



? OOLITE 



' :t ^„r _7 'aWq--- Riven Thamm 



GfiEE/VSAMD 



shed and the profiles of the rivers 



Hor 



