342 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



Little Miami River is at the crossing of the Martinsville and Hillsboro pike. 

 From this stream westward to Martinsville the pike runs near the south 

 margin of the moraine, keeping the outer border plain constantly in view. 

 Martinsville is itself on the south slope. West from that village the moraine 

 leads through Cuba, its southern edge being followed by the East Fork of 

 Cowans Creek to its junction with Todds Fork, near Clarksville. From 

 this point it swings rapidly northward and. assuming a course slightly west 

 of north, comes to Csesar Creek, near Harveysburg, where it connects 

 with the eastern limb of the outer, or Hartwell, moraine of the Miami lobe. 

 The interlobate moraine, as above noted (p. 305), extends up the Little 

 Miami Valley across Greene County. This belt exhibits its greatest breadth 

 near Cuba, where for a few miles it has a width of 4 or 5 miles; usually 

 its width is biit 1 or 2 miles. 



RELIEF. 



North of Beech Flats, in Pike County, and in southeastern Highland 

 County, the moraine is of a subdued type, and stands only 10 to 25 feet 

 higher than the north border of these flats. Toward the west sharp gravel 

 hills, 80 to 100 feet in height, set in, among which are low tracts no higher 

 than the tracts outside (south) of the moraine and but little higher than the 

 valley of Rocky Fork, which lies on the north. As already stated, these 

 gravel hills may belong to the earlier drift sheet instead of this moraine. 

 Both north and south of this portion of the moraine there are rocky hills 

 bearing scarcely any drift, which stand much higher than the moraine. 

 The moraine is, therefore, not so conspicuous a feature as it would be on 

 plane tracts, such as are found in northwestern Ohio or even on those in the 

 adjoining counties, Clinton and Fayette, where there are few rocky hills. 

 In the northwestern part of Highland and in eastern Clinton counties it 

 rises quite abruptly above the flats that border it on the south, in many 

 places a rise of 20 feet being made in as many rods, while the crest of the 

 moraine is 30 to 60 feet above the outer border plain. The Baltimore and 

 Ohio Railroad profile shows at Martinsville a rise of 15 feet in 5 chains and 

 a rise of 62 feet in 52 chains in its jjassage from the plain to the crest of the 

 moraine. West of Martinsville there is a more gradual rise to the moraine 

 from the outer border plain than that noted east of the village, about 30 

 feet in a mile being the usual rise in the vicinity of Cuba. North of 

 Clarksville it stands 30 to 50 feet above a plane tract along its outer 



