OUTER MORAINE OF THE SCIOTO LOBE. 343 



border, drained by a small stream known as Flat Fork, and presents an 

 abrupt relief. North from the point where it touches Csesars Creek, near 

 Harveysburg, it is, as noted above, so closely associated with the correla- 

 tive Miami moraine as to be distinct only at intervals. Near Xenia the 

 eastern part of the interlobate belt rises boldly above the country west of 

 it, but its altitude there is due, in large part, to the underlying rock, since it 

 lies upon the western edge of the Niagara escarpment. On the Xenia and 

 New Jasper pike, leading eastward from the court-house in Xenia, there 

 is an ascent of about 100 feet in 2 miles, where a summit is reached. A 

 mile or more farther east, and only 40 to 50 feet lower, are outcrops of 

 rock. The inner border relief of the interlobate belt in this vicinity is 30 

 to 40 feet. In Clinton County the inner border relief is scarcely noticeable 

 except in rare instances; it seldom exceeds 25 feet, and rises for a mile or 

 more to attain this height. 



RANGE IN ALTITUDE. 



The altitude ranges between 900 and 1,200 feet above tide, being 

 greatest in the vicinity of New Vienna, as shown by the table below: 



Altitudes along the Cvha moraine. 



Feet 

 above tide. 



Marshall (Ohio Geological Surve}') 1, 031 



Near New Vienna (Baltimore and Ohio Southwestern Railroad) 1, 180 



Near Martinsville (Baltimore and Ohio Southwestern Railroad ) 1 , 106 



Ogden, in valley (Cincinnati and Muskingum Vallej' Railroad) 901 



East of Xeuia (aneroid) 1, 100 



TOPOGRAPHY. 



The topography of the moraine is of a gently undulatory type, swells 

 exceeding 10 feet in height not being numerous, while those with a height of 

 15 to 20 feet are rare. It is undulatory, however, in this slight degree, and 

 thus differs from the plains toward the south, which have extensive tracts so 

 level that the water which falls in the spring often stands on the surface 

 until evaporated by summer drought. The distinctive characters of this 

 moraine are its relief above the flat laud which borders it, as was noted 

 above, and its general freedom from silt such as covers the flat land. Were 

 it not for these its classification as a moraine might be doubtful, for in the 

 matter of drift swells it certainly has not a pronouncedly morainic expres- 

 sion; but a consideration of these features aud of its connections makes 



