264 PLEISTOCENE OF INDIANA AND MICHIGAN. 



For 5 or 6 miles along this part of the moraine a sandy outwash fan overspreads the clay 

 plain, covering nearly all of Watertown Township that lies southeast of the moraine and running 

 south into Marathon Township for a mile or more. 



From a reentrant angle in the moraine south of Mayville gravelly outwash spreads south- 

 east for a mile or two, east of which a narrower and weaker morainic ridge runs eastward with 

 front convex to the south. Two miles northwest of Silverwood this ridge sinks beneath 

 sandy outwash from the next later moraine but is apparently continued about 2 miles east of 

 Silverwood by a moraine of about the same strength and character, trending southeast, which 

 emerges from the east side of the outwash deposit. 



After emerghig from the outwash apron this moraine passes just south of Clifford and con- 

 tinues southeasterly into T. 9 N., R. 12 E. (Burnside Township). It is very much broken and 

 toward Burnside becomes an irregular belt of scattered knolls. In sees. 5 and 6, Burnside 

 Township, the channel of a glacial river from the northeast breaks through the moraine in a 

 westward course to the Imlay channel south of North Branch. Southward from this drainage line 

 as far as the southeast corner of Burnside Township the scattered deposits continue, but south 

 of this along the county line the country is a wide, flat swamp with only a few knolls rising 2 to 4 

 feet above it. A line of faint knolls answering tlois description passes from the southeast 

 corner of T. 8 N., R. 12 E. (Goodland Township), southeasterly into T. 7 N., R. 13 E. (Mussey 

 Township), St. Clair County, where it meets a large transverse ridge extending toward the south- 

 west. In Burnside Township the eastern knoll of "Deanville Mountain" stands about in 

 line with this moraine but probably belongs to the next earlier moraine. The relations in this 

 vicinity, however, are not certain. 



DEANVILLE MORAINE. 



West of Index a slender, even-crested moraine, here called the Deanville moraine, runs 

 directly south past Deanville and in broken form to Mill Creek at the county line. Beyond, in 

 the western part of the township of Lynn, lies a great swamp, in which nothing representing this 

 moraine was observed. Beyond the swamp, however, in the line of trend of the moraine pro- 

 duced from where last seen south of Deanville, a faint ridge continues to the southeast in north- 

 east Mussey Township. Another fainter, more broken ridge runs parallel with this about a 

 mile to the east. These faint ridges begin near the south side of one of the transverse ridges 

 which cross this region from the northeast. On the north side of this transverse ridge two 

 morainic knolls stand in about the trend of the Deanville moraine, but their longer axes are 

 parallel with the transverse ridge. The relations of this moraine are not clear. It appears to 

 be older than the Mayville moraine, but its connections toward the north and west are not known. 



MAYVILLE MORAINE. 



The Mayville moraine appears to be a continuation of the Flint moraine. It enters Water- 

 town Township, Tuscola County, in sees. 30 and 19 and extends thence directly northeast to 

 Mayville. In most of this interval it is high and rugged and nearly 2 miles wide. At Mayville 

 it turns more easterly, bending south a little, like the Otisville moraine, which is a mile or so 

 south of it. Gradually it turns southeast, passing 1J miles northeast of Clifford, runs east 

 nearly to Marlette, turns again southeast, bending east at the county line 3 miles southeast 

 of Marlette, and thence runs east to the northeast corner of Lapeer County. At this point it is 

 broken by a swampy trough which runs north along Cass River and southwest to the Imlay 

 channel south of North Branch. Whether it finds its continuation southward in the Deanville 

 moraine or eastward in a chain of morainic knolls connecting with the Owosso moraine 

 northwest of Omard remains undecided, though the Deanville line seems the more probable. 



OWOSSO MORAINE. 



A moraine regarded as the probable northeastward extension of the Owosso moraine passes 

 H miles southeast of Millington (p. 243) and runs northeastward to Murphys Lake as a low, 



