LATER MORAINES OF LAKE MICHIGAN, SAGINAW, AND HURON-ERIE LOBES. 243 



corner of the county. The morainic features are very irregular, but the moraine has outwash 

 at several points on its east side and is sharply separated from the next later moraine by a 

 strong line of ice-border drainage which follows Butternut Creek toward the southwest. In 

 passing northeastward out of Genesee County this moraine bends a little to the east and crosses 

 the extreme northwest corner of Lapeer County. Its front passes just north of Otter Lake, 

 north of which for a mile or more it is very high, reaching an altitude of over 1,000 feet above 

 sea level. 



The bowdder belt northeast from Flint appears to follow the normal course of the Flint 

 moraine produced, and the Otisville moraine continues in the same line. If the moraine running 

 north from Flint is the continuation of the Flint moraine, the bowlder belt and the Otisville 

 moraine appear to be left as detached fragments out of harmony with the earlier and later 

 members of the group and without visible representation toward the west. The Otisville 

 moraine is roughened, as if by overriding some earlier moraine or other feature of considerable 

 relief. Though the preponderance of evidence seems to favor the ridge going north to Mount 

 Morris as the continuation of the Flint moraine, the alternative course past Otisville remains 

 open. 



OWOSSO MORAINE. 



The Owosso moraine passes Ithaca and runs south a few miles and thence southwest to 

 the bank of the Grand River channel at Maple Rapids. (See fig. 1, p. 258.) It is a strong, even, 

 continuous ridge. The first ridge (in double form) east of Maple Rapids appears to be part of 

 the Flint moraine. But just east of this, in the northeast part of sec. 2, T. 8 N"., R. 3 W. 

 (Essex Township), another moraine, extremely broken and bearing a number of kames and 

 other irregularities, sets in and runs east past Union Home and Eureka. The north face of 

 this moraine is a high, steep bluff, evidently cut away since the moraine was made. Lake 

 beaches along its base may account for part of the cutting but not for the most of it. (See p. 258.) 



On the north side of the river the Owosso moraine bends southwestward into the head of 

 the channel and near Maple Rapids virtually forms its north bank. On the south side the 

 trend of the moraine is also westward to the head of the channel. (See fig. 1.) Taken together 

 these two moraines seem to mark the sides of a sharp ice tongue which projected westward 

 to the head of the channel and down it through and beyond the Flint moraine. The cause of 

 this relation will be discussed in connection with drainage (pp. 257-259). 



From near the township line 2 miles southeast of Eureka eastward to about 2 miles east of 

 Elsie there was either no morainic deposition or else the moraine was afterward washed away. 

 Beyond this gap the moraine runs southeast as a more continuous and even ridge, passing just 

 north of the cities of Owosso and Corunna and 4 or 5 miles north of Durand. Farther east, 

 toward Flint River, it turns a little north of east and grows much fainter. 



If the Flint moraine finds its continuation in the Otisville moraine, then it would seem 

 almost certain that the moraine running north from Flint to Mount Morris is a continuation 

 of the Owosso moraine. Otherwise the Owosso is probably continued in one of the ridges 

 passing just north of Mount Morris and south of Millington. 



HENDERSON MORAINE. 



The confusion among the slender moraines about the head of the Grand River channel makes 

 it difficult to identify the members. A mile or two northeast of Maple Rapids the channel begins 

 to open out into the basin of Saginaw Bay. The divide between Maple River, which flows west 

 through the Grand River channel, and a branch of Bad River, which flows northeast to Saginaw 

 Bay, is about 1J miles northeast of Bannister and about 14 miles east of Maple Rapids. West 

 of this divide much of the lake floor approaching the head of the Grand River channel is thickly 

 strewn with bowlders. In a few places fairly distinct belts occur, one of which runs southeast 

 on the divide east of Bannister and is continued in a distinct morainic ridge, known as the Hen- 

 derson moraine, which begins about a mile south of Chapin and runs southeast, passing about a 

 mile south of Henderson. Southwest of Chapin three smaller ridges lie between the Henderson 



