258 0. A. Reeds — Hunton Formation of Oklahoma. 



be relied upon to determine which of the two shale formations 

 is represented. 



That the writer's conclusions may he substantiated and that 

 the formations may be more completely defined, each forma- 

 tion, with its characteristic fauna, will he treated separately in 

 the following pages. 



Chimney hill limestone {Silurian). 



This formation corresponds to Taff's lower Hunton lime- 

 stone. It varies in thickness from to 53 feet, hut it is per- 

 sistent throughout all of the widely scattered exposures of the 

 Hunton. It is named after Chimneyhill creek, which crosses 



Table I. — Correlation table of the Siluro- Devonian Rocks, 

 Arbuckle Mountains, Oklahoma. ' 



r3 

 o 



ID 



IB 



CD 

 60 



OS 



Eeeds 1911 



Taff, Ulrich and 



Girty 



1903-1904 



a 



C3 

 • l-t 



a 



o 

 > 



CD 



5 



CD 

 CD 

 '3 



<4-l 



C3 

 o 



w 



Bois d'Arc limestone 

 0-90 feet, average 60 feet 



Upper 

 Hunton 



a 

 1 



5 



a 



as 



"o 

 o 

 W 



•5 



a) 



Haragan shale 

 0-166 feet, average 100 feet 



Middle 

 Hunton 



1 



3d 



u 



CD 

 CD 



2 



n 



a 

 a 



so 



CD 



CD 



o 



hJ 



O 



m 



Henryhouse shale 

 0-223 feet, average 90 feet 



3 



< 



o 



o 



o 



f Pink-erinoidal member, 

 Chimneyhill | 0-39 ft., av. 15 ft. 



limestone J Glauconitic member, 

 0-53 feet 0-25 ft., av. 15 ft. 

 av. 35 feet | Oolitic member, 



L 0-12 ft., av. 5 ft. 



Lower 

 Hunton 



6C 



cS 



s 



a 

 o 



5 



