88 PLEISTOCENE OF INDIANA AND MICHIGAN. 



west end of the supposed interlobate spur a few miles northwest of Crawfordsville, the moraine 

 runs southward with a width of 3 or 4 miles to the place of junction west of Crawfordsville, pass- 

 ing through Wingate and just east of Waynetown. Beyond the junction it goes southeastward, 

 crossing Sugar Creek at the bend west of Crawfordsville and continuing to Ladoga, keeping south 

 of the Chicago, Indianapolis & Louisville Railway and maintaining a width of about 2 miles. 



Near Ladoga it loses its topographic expression, there being a plain to the south and east for 

 6 to 8 miles, or as far as Walnut Fork of Eel River in northwestern Hendricks County. East of 

 Walnut Fork, near North Salem, an undulating belt which is probably its continuation sets in 

 and leads southeastward to Clayton, a distance of about 15 miles, exhibiting in places a parallel 

 series of ridges of considerable strength spread over a width of 3 or 4 miles. From the south- 

 eastern end of this undulating belt a bowldery strip 1 to 2 miles wide leads eastward nearly at 

 right angles to the belt. Whether this marks the trend of the ice border or was developed along 

 the line of recession of the ice is not at present known. The position, however, seems a doubtful 

 one for the ice border. 



From Clayton a plain extends southeastward to the White River valley in northwestern 

 Johnson County, a distance of 18 or 20 miles, where another undulating belt, beginning on the 

 east bluff of White River, leads southeastward, passing north of Union village and south of 

 Franklin, to Sugar Creek, a tributary of East White River in eastern Johnson County. As this 

 belt represents the first moraine back from the Wisconsin border in Johnson County, its position 

 corresponds with that of the undulating belt in Hendricks County. These two, therefore, are 

 probable correlatives despite the gap of nearly 20 miles between their ends. 



Beyond Sugar Creek another gap intervenes, followed in southern Shelby County by a sup- 

 posed continuation of the system in a bowldery strip which sets in near Marietta on the east 

 bluff of East White River and extends with slight interruptions, caused by gravel plains and 

 drainage lines, across the southeastern part of the county to Cynthiana, on the east border 

 directly east of Shelby ville, and thence bears northeastward to Rushville. From Rushville a 

 definite ridge runs northward to Newcastle along Flatrock Creek valley, keeping west of the 

 stream except for a few knolls in southern Henry County that are on the east side. The ridge 

 loses its expression near Newcastle within 5 or 6 miles of the head of the reentrant between the 

 East White and Miami lobes. 



The moraine and bowlder belt east of East White River from Newcastle to Marietta holds 

 a close parallelism to the Wisconsin border 15 to 20 miles inside that border. In Johnson County 

 it is 8 to 12 miles back of the Wisconsin border, and in Hendricks and Montgomery counties it is 

 20 to 25 miles back of it 



TOPOGRAPHY. 



The northwest part of the supposed interlobate spur in northwestern Montgomery County, 

 Ind., contains low knolls and ridges 20 feet or less in height interspersed with basins and flat 

 tracts. In many places the knolls are clustered, giving the surface a very hummocky aspect. 

 A slight tendency to ridging in the line of the moraine was noted. Southward from Elmdale the 

 knolls and ridges are distributed along two lines between which is a tract about a mile wide with 

 only a few knolls. Some ridges and knolls on the eastern line reach 25 to 30 feet, and a single 

 knoll southeast of Elmdale rises to 50 or 60 feet; the great majority along both lines are, however, 

 20 feet or less in height. 



Southwest of Crawfordsville, between Sugar Creek and Offield Creek, are narrow ridges 

 20 to 25 feet high, the more prominent of which trend nearly east and west. Among these are 

 numerous small knolls 5 to 15 feet high. About midway between Crawfordsville and Whites- 

 ville gravelly knolls extend like a spur northeastward from the inner border of the moraine 

 across sees. 14, 11, and 12, T. 18 N., R. 4 W. The largest knoll is 30 feet in height; the others 

 are only about 15 feet. Aside from this spur the moraine south and southeast from Crawfords- 

 ville carries only low knolls 6 to 15 feet high, and this weak expression continues nearly to Ladoga. 

 A few sharp gravel knolls 15 to 25 feet high, both east and south of Ladoga, on the borders of 

 the Raccoon Creek valley, form the terminus of the undulating strip. 



