HUEON" COUNTY. 



301 



Beeea Geit. 



This important quarry rock covers much of the county, but its value 

 is greatly impaired by the local disturbances mentioned above. 



At Eattlesnake Run, in Norwalk township, an exposure of the Berea 

 and the rocks below gives the following sections : 



,1. Drift, with fragments of Beroa G-rit. 



2. Black shale, oontaining a 



mass of Berea G-rit 30 feet 



3. Blue shale.-, 6 " 1 



4. Blackshale j... 2 " (Cleveland 



5. Bine shale I.. 6 " (shale. 



6. Blackshale 2 " J 



7. Erieshale 32 " 



8. Blue argiL shale, with hard bands. 



9. Huron shale. 



Here the Bedford shales are entirely wanting ; the Berea grit is crushed 

 and broken, and rests in a narrow trough of the Cleveland shales. This 

 is not an old channel, cut out before the deposit of the Berea, but was 

 excavated by a part of the Berea which in a measure resisted the crush- 

 ing force of the ice, and was pushed forward by it, until it had excavated 

 the channel in which it now rests, dipping southward 30°. The Cleve- 

 land shales on each side immediately adjoining the Berea, dip toward it, 

 but at a short distance from it dip in the opposite direction, showing that 

 they were pushed outward and " buckled" slightly upward by the lateral 

 pressure. 



At Jefferson's quarry, near the town line at the north-east corner of Town- 

 send, on a long ridge running north and south, the surface of the Berea 

 is two hundred and seventy-five feet above the Lake ; the dip is south- 

 westerly 17° ; the line of strike north 67° west. The upper layers only 

 are exposed ; these are thin, but strong, and less broken than in most 

 places in the county, indicating that here good quarries could be opened. 

 A half mile furtlier north, the dip is 15° ; the surface marked with glacial 

 striae, bearing north-east and south-west At Mr. Milliman's quarry, near 

 the north-west part of Townsend, the dip of the Berea is 20°. South and 

 south by south-west the stone is of good quality ; glacial striae north-east 

 and south-west. East of the last two exposures, and on the east bank of 

 the Vermillion, the surface of the Berea is twenty-five feet below the 

 last. Fifteen feet of the roek is exposed in large mafisive blocks, nearly 

 horizontal, but dipping slightly in difierent directions. These blocks 



