ST. JOHNS OR SALAMONIE MORAINE. 509 



sequent smaller amount of water in the valleys, is not determined. The 

 general absence of silts on the plains outside the moraine is thought to 

 indicate that the depression of the land could not have been sufficient to 

 cause fluvio-lacustrine conditions, while the great excavation accomplished 

 along the Wabash by the old lake outlet in the closing stages of glaciation 

 indicates for that stream a rapid fall. The evidence, so far as gathered, 

 does not bear out the view that the attitude of the land was the sole cause, 

 and it is doubtful if it was the main cause, for the lack wf vigorous di-ainage. 



ST. JOHNS OR SALAMONIE MORAINE. 

 DISTRIBUTION. 



This moraine succeeds the Mississinawa closely on the north in the 

 terminal portion of the loop, being nowhere distant more than 10 miles, and 

 usually not more than 2 to 4 miles. In the lateral portion, formed on the 

 northwest border of the ice lobe, it is, as described in the preceding- section, 

 closely combined with the Mississinawa moraine. 



The Ohio portion of the moraine was traced, about thirty years ago, 

 by N. H. Winchell, and given the name St. Johns, because of its peculiarly 

 strong development at a small village of that name situated a few miles east 

 of Wapakoneta.^ Portions of it were subsequently traced in Indiana by 

 McCaslin^ and Dryer,^ the latter of whom gave it the name Salamonie, since 

 it follows and controls the direction of that stream tlu-oughout nearly its 

 entire length. The name Salamonie seems preferable to St. Johns, since it 

 is not likely to be duplicated. Furthermore, it is of the same class as 

 the names applied by Winchell and Gilbert to other moraines of north- 

 western Ohio and northeastern Indiana, being the name of the stream whose 

 course it governs. Both names are, however, retained in the present 

 discussion. 



From the western border of the Scioto Basin, in Hardin County, Ohio, 

 westward to the vicinity of St. Johns this moraine is closely associated with 

 the Mississinawa, but westward from St. Johns a narrow jilain separates the 

 two morainic belts. This plain is occupied in turn by Pusheta Creek, 



'Proc. Am. Assoc. Adv. Sei., Dubuque meeting, 1872, p. 161; also Geology of Ohio, Vol. II, 

 1874, p. 405. 



^D. S. McCaslin: Twelfth Ann. Rapt. Geol. Survey Indiana, 1882, pp. 156-164. 



'Geolegy of Whitley County, by C. R. Dryer: Seventeenth Ann. Rept. Geol. Survey Indiana. 



