BEREA SANDSTONE IN ERODED CLEVELAND SHALE^ 



WILBUR GREELEY BURROUGHS 

 Oberlin, Ohio 



In Lorain County of northern Ohio occurs the greatest devel- 

 opment of the Bedford-Berea unconformity.^ This unconformity 

 extends throughout other portions of the state.^ It is found as 

 channels over loo ft. deep filled with Berea sandstone, as in the 

 Amherst district, and from these pronounced forms declines in 

 prominence to Berea sandstone filled channels 2-3 ft. deep, as 

 that on Indian Creek at Stoneville, Ashtabula County, Ohio; or 

 to a thin sandstone layer of the Bedford eroded away in the center 

 where it crosses Phelps Creek, southeast of Painesville, Ohio."* 



All of the channels eroded in the Bedford formation have 

 either been confined to that formation, or have started in the Bed- 

 ford and penetrated into the Cleveland formation which lies below 

 the Bedford. These channels eventually were filled with Berea 

 sand which, on consolidating, formed the Berea sandstone. 



The most northerly Berea sandstone in Ohio. — The most northerly 

 occurrence of Berea sandstone is that outcropping on the shore of 

 Lake Erie, two miles east of Vermilion, Lorain County. Here the 

 Berea sandstone extends from the top of a 25-ft. lake-cliff to the 

 water's edge, under which it dips. 



As far as the writer is aware, the first and only mention ever 

 made of this body of Berea sandstone was made by E. M. Kindle 



' Published by permission of the Director of the Ohio State Geological Survey. 

 Read before the Twenty-third Annual Meeting of the Ohio Academy of Science, at 

 Oberlin, Ohio, November 29., 19 13. 



^ W. G. Burroughs, "The Unconformity between the Bedford and Berea Forma- 

 tions of Northern Ohio," Jour. Geo!., XIX, No. 7 (1911), 655-59. 



3 Charles S. Prosser, "The Disconformity between the Bedford and Berea Forma- 

 tions in Central Ohio," Jour. GeoL, XX, No. 7 (191 2); Charles S. Prosser, Geol. Surv. 

 Ohio, Bull. 15, Fourth Series; H. P. Gushing, manuscript. 



4 Charles S.;,Prosserj Geol. Surv. Ohio, Bull, ij. Fourth Series, p. 277, and B, of 

 Plate XVII, p. 274. 



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