CARBONIFEROUS. 



373 



PLATE VIL 



Northern Field 



W^t 



DIVISIONS 



Central .Fi.eldt 



Tku 



msi 



ness 



m^ww?, 





l^jfM? 



Double Mounta? 



±d£^. 



nbss 





Cle 





SES^SH 



1975 



32— geol, 



