GEOLOGICAL SCALE OF OHIO 



SYSTEM 



IS 



SERIES 

 GLACIAL DRITT o- 55. 



(A 



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 tC 



u 

 k. 



z 

 o 

 m 



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ir 



16 



15 



UPPER BARREN COAL MEASURES 



UPPER PRODUCTIVE COAL MEASURES 



LOWER BARREN COAL MEASURES 



LOWER PRODUCTIVE COAL MEASURES 



CONGLOMERATE SERIES 

 SUBCARBONIFEROUS LIMESTONE 



!• 4KA1.C 



lb LOGAN tRO«' i«"liro«l 

 lb CVYAMOGA SHALE 

 U. 0EREA SHALE 

 ll. 8 ERE A GftiT 

 a* etoro«o shale 



2 

 < 



Z 



% 



u 



o 



ilQ. CLEVELAND SHALC 

 10. ERIE SHALC 



10 . MUROM SHALE* 



HAMILTON SHALE 



DEVONIAN LIMESTONES ts -rs 



I ' I . ' T 



2 

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3 



<r 

 (j 

 a 



a 



P 



z 

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a: 



J 

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cc 

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LOWER HELDERBERC LIMES"TONE»-«« 



Tyirrv.. 



NIAGARA SERIES 



CLINTON SERIES 

 MEDINA SHALES 



6. HILLSBORO SANDSTONE 

 GUELPH LIMESTONE 

 I 4. NIAGARA LIMESTONE" 

 \ 6. NIAGARA SHALE. OAYTpN LIME 



li 



HUDSPN RLVER SERIES 



UT1GA SHALES . • -*•• 

 TRENTON LIMESTONE 



•M - lOS» 



