LATER MORAINES OF LAKE MICHIGAN, SAGINAW, AND HURON-ERIE LOBES. 263 



relations across this space. The three fragments north of the river near Columbiaville seem 

 plainly out of adjustment with the Otter Lake moraine, which overrides them all near the west 

 line of Lapeer County, and they have no certain correlative eastward. Still they may be contin- 

 ued, after an interval of 10 or 12 miles, in the Imlay moraine, which seems to lack westward 

 connections near North Branch, just as the Fowler moraine lacks eastward connections near 

 Columbiaville. 



IMLAY AND GOODLAND MORAINES. 



The Imlay and Goodland moraines are closely contiguous. They begin about 3 miles south- 

 east of North Branch and trend southeast along the east side of the Imlay channel to Mill Creek. 

 Toward Mill Creek the two crests draw closer and are scarcely separable. South of Mill Creek 

 both ridges are fainter but are more distinctly separated. The eastern one (the Goodland 

 moraine) is faintly double in the southeastern part of T. 8 N., E. 12 E. (Goodland Township), 

 and the western one (the Imlay moraine) has some gaps and short side ridges toward Imlay. 

 The two ridges converge again toward Imlay, where they are about a mile apart. East from 

 Imlay they are each one-fourth to one-half mile wide and are separated by a peat bog. These 

 moraines are described below (p. 285). 



A few miles north of Imlay, in the central part of Burnside Township, some large kames 

 stand on the line of these moraines. They have two principal crests and their longer axes trend 

 with the moraines northwest and southeast, the two main knobs being about a mile apart. (See 

 pp. 271-272.) 



OTTER LAKE (ST. JOHNS?) MORAINE. 



The Otter Lake moraine lies 1 to 1^ miles southeast of Otter Lake in northwestern Lapeer 

 County. It comes up from the southwest out of Genesee County and is probably the continuation 

 of the St. Johns moraine. South and southeast of Otter Lake it is strong, being nearly 2 miles 

 wide and composed of four or five minor ridges. East of Otter Lake it is narrower and lower, 

 about a mile wide, and is broken by a large esker which trends southeast. 



The features north and northeast of Otter Lake are hard to interpret satisfactorily. Two 

 alternatives are presented. According to one, at a break in the esker about 1J miles northeast of 

 Otter Lake the front of the next later moraine overrides the Otter Lake ridge. North of the 

 esker a low, slender ridge, apparently the front member of the minor ridges just mentioned, 

 comes up from the south and connects with two morainic spurs which project about a mile south- 

 east. According to the other interpretation, a well-defined morainic belt, running northeast 

 directly in line of prolongation of the Otter Lake moraine to a point 2 miles south of Mayville, 

 forms the front of the complex morainic belt that extends eastward along the northern 

 boundary of Lapeer County. 



The available evidence seems to favor the first alternative ; in that case the lower morainic 

 deposits east of the esker and the morainic belt, running northeast from this point, aU belong to 

 the Otisville moraine rather than to the Otter Lake, and the Otter Lake moraine is overridden 

 east of Otter Lake by the Otisville moraine. So far as known, the Otter Lake moraine has not 

 been recognized at any point farther north or east. 



OTISVILLE MORAINE. 



As just described, the Otisville moraine passes just north of Otter Lake and thence appar- 

 ently northeastward to a point 2 miles south of Mayville. In sees. 21 and 28, Watertown 

 Township, its course is interrupted by a drainage channel bearing a stony deposit, partly morainic 

 and partly resembling small kames. Stony morainic spurs that run out a mile or more to the 

 southeast on both sides of the small stream which flows from Cedar Lake toward Fostoria seem 

 distinctly older than the moraine and are partly overridden by it. To the northeast in Water- 

 town Township the moraine is about a mile wide and is separated from the next moraine to the 

 west by a fairly distinct, narrow bench — not a depression but a line of change of altitude and 

 topography. 



