1- Bristol 



Radstodtian 



Yorhian 



Da 



Cfmain 

 part of 'mc' 



CsnmiaoDliEe 

 lamifiosa Oolomite 



V 



2. Devonshire- 



3. Chepstow. 



4, Forest of Dean 



K 

 I O.R.S. 



5. N. crop of the South 

 Wales coalfield. 



x(B,x) 



D2 



Can. Oolite 

 am. dolomite 



TABLE I 

 7. South Pembrokesliire. 

 Uncastnan 

 GtoPH 



D2 



>E 



Scs/e I inch "^ ^00 feet 



