CHAPTER LXV. 



REPORT ON THE GEOLOGY OP HURON COUNTY. 



BY M. C. EBAD. 



lOPOGKAPHY. 



The distinctive peculiarities of the topography of Huron county are 

 apparent only after a somewhat minute and careful observation. Com- 

 mencing at the north-west corner of the county, a broad and level sur- 

 face of prairie, with peaty soil, modified in places by sand dunes and 

 valleys of recent erosion, is a marked characteristic. This is followed on 

 the north and east by other broad and higher terraces reaching to the irreg- 

 ular undulations of the clay Drift of the divide. The outlines of these 

 successive terraces are very irregular, and the ascent from one to the other 

 so gradual, that the changes of level are often unnoticed; the attention of 

 the observer being attracted only to the large areas which mark the old 

 water-levels, the difference in elevation of these being overlooked. The 

 elevated land, extending from the northern divide through Townsend 

 township, terminating at Berlin Heights, in Erie county, forms a high 

 promontory, which reached far out into the Lake when the land to the 

 west and north-west of it was covered with water. On the northern face 

 of this promontory, the successive steps of the terraces which are read 

 with difficulty in most other parts of the county, are brought into close 

 proximity, the record of each successive stage in the depression of the 

 waters of the Lake being plainly legible, as will be seen from the wood- 

 cut below. 



Tkrbaces at Beklin Heights. 



Above Lake Brie. 

 189feeti 



Level of Latce.Brie.t. 



