356 



GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



Spartanburg, Siiowliill, Huntsville, and Windsor, Ind. The width of the 

 inner member, where distinct, is 2 to 3 miles, being greater than that of 

 the middle member. 



RELIEF. 



Throughout the terminal loop the outer member of the system has a 

 general relief of 20 to 30 feet, while its highest points rise to a height of 50 

 feet or more above the outer border district. It can scarcely be entered at 

 any point from the outer border district without making a perceptible, and 

 throughout much of the border an abrupt, rise. In the reentrant portions 

 the relief is less easily determined, since the moraine breaks up into sharp 

 knolls more than in the terminal loop. On the inner border the rise into the 

 moraine is somewhat less and is also more gradual than on the outer border. 



The middle and inner members of this system have a relief above 

 bordering districts nearly as great as that of the outer member, but the rise 

 is less abrupt; they are consequently less conspicuous topographic features. 



RANGE IN ALTITUDE. 



The eastern limb of this morainic system has a range in altitude of 

 about 850 feet, and the western limb nearly 400 feet. The rock surface 

 has equally great range, as may be seen by the following table of altitudes : 



Tcihle of altitudes along the moraine. 



Uplands eastof Bellefontaine 



Hogue Summit 



AVest Libertj', in valley 



Spring Hills, on uplands 



Mosquito Lake, in valley 



St. Paris, on uplands 



Little Mountain, near St. Paris 



New Carlisle, in valley 



Osborne, in valley 



Uplands in east part of Dayton 



Dayton, in valley 



Carlisle, in valley 



Uplands south of Germantown 



Camden, in valley 



Uplands in northwest Preble County, Ohio, and in Wayne and 

 Randolph counties, Ind 



o Barometric. 



