496 GLACIAL FORMATIONS OF ERIE AND OHIO BASINS. 



enters the Scioto Basin, where it becomes differentiated into the Powell, 

 Broadway, and Mount Victory moraines of that basin. 



In the portion of Ohio west of the Scioto Basin this moraine seems not 

 to have been recognized as such by the Ohio survey, though in the. descrip- 

 tions of the topography the rolling character of certain divides is mentioned.-^ 



In Indiana the moraine was recognized by McCaslin within the bounds 

 of Jay County,^ while Dryer has mapped with much detail the portion from 

 Whitley County northward to Michigan. 



RELIEF. 



The relief above the outer border plain ranges from 20 feet or less in 

 the lower portions of the moraine to 75 feet or more where it is most prom- 

 inent. The Ohio portion has, on the whole, a less bold relief than the 

 Indiana portion. In Jay County, Ind., the relief falls below 50 feet, 

 but in Delaware County, near Granville, it is fully 75 feet. In Orant 

 County the crest stands 20 to' 40 feet or more above the plain that 

 lies west of the Mississinawa River. In Wabash County the moraine pre- 

 sents considerable relief, but it is inconspicuous, since the outer slope is 

 long and gentle. Thus the altitude of the crest on the Chicago and Erie 

 Eailway, near New Madison, is 870 feet above tide, while the altitude of 

 the plain west of the moraine at Bolivar, some 5 miles from the crest, is but 

 784 feet above tide. Where it borders the interlobate moraine its crest and 

 highest points fall considerably below the crest of that moraine, though on 

 the inner border they show a relief ranging from 20 to 60 feet above the 

 border plain. It is somewhat distinct from the inner border of the inter- 

 lobate moraine in Steuben County and there has a relief of 20 to 40 feet 

 above the plain west of it and about the same above the plain on the east. 

 In the double portion of the moraine in Jay and Blackford counties the 

 plain included between the constituent ridges stands only 20 to 40 feet 

 below the moraines on either side. 



On the inner border there is a more gradual descent than on the outer, 

 and the descent continues across the plain which intervenes between the 

 moraine and the Salamonie River, so that at that stream the altitude is 50 

 to 100 feet lower than the crest of the moraine. 



•N. H. Winchell; Geology of Ohio, Vol. II, 1874, p. 411. A. C. Lindemuth; Geology of Ohio, 

 Vol. Ill, 1878, pp. 496-498. 



^D. S. McCaslin; Geology of Jay County: Twelfth Ann. Eept. Geol. Survey Indiana, 1882, 

 pp. 155-156. 



