300 



GEOLOGY OF OHIO. 



given them this name. This peculiarity is more decidedly exhibited 

 in the Bedford shales of the county, as some of the seotions hereafter 

 given will show. The dip of the strata is irregular. At the quarry 

 worked by W. R. Starr, south of Clarksfield> village, along the line bear- 

 ing south 60° east, the rock dips to the north 11°. Fifteen rods north the 

 dip is 7° in the opposite direction. Half a mile west of this locality, 

 in another branch of the Vermillion, the dip is as represented in the 

 subjoined wood cut : 



Anticlinal and Syncllnal Akchbs in Bekea Gkit. 



Dip 8° N., 40° E. Dip 13° S., 40° W. 



144 ft. 



Following the above exposure toward the east, we find the flexure 

 indicated below : 



The lines of fracture are substantially parallel with the line of strike 

 Here, as elsewhere in the county, this disturbance is superficial, not in- 

 volving the deeply buried rocks, and is the result of lateral thrust, the 

 action of that slowly moving, resistless force, which has broken up and 

 displaced nearly all the surface rocks of the county, and has crushed to 

 the center the high rock hills in the counties further north. 



Just north of New London township, in Ashland county, this super- 

 ficial disturbance of the strata is shown in an exposure of the Cuyahoga 

 shales near the north and south center roads. There the soft, flexible 

 shales are crowded up, as represented in the figure given below, until 

 the strata incline at an angle of 46°. They were becoming level again 

 however, at the west,' and the disturbance evidently involves the super- 

 ficial strata only. 



TiKLDBD Strata op Cuyahoga Shale. 



