LATER MORAINES OF LAKE MICHIGAN, SAGINAW, AND HURON-ERIE LOBES. 287 



The United States Lake Survey chart of Lake St. Clair shows some interesting features 

 which are thought to have connection with this moraine. Just outside the head of Detroit 

 River the villages of Grossepoint and Claireview are situated on a well-defined ridge of bowldery 

 till, evidently a terminal moraine, about a mile wide and 2 or 3 miles long. The shore along 

 its front is thickly strewn with bowlders. At one place on its western edge the ridge rises to 

 an altitude of 620 feet, or about 45 feet above Lake St. Clair. Northward to Milk River Point 

 this ridge dies down and disappears, but it is shown by the chart of Lake St. Clair to be con- 

 tinued as a low, submerged ridge running north for 5 or 6 miles, and then to reappear as stony 

 till in the land that projects like a delta of Clinton River below Mount Clemens. All of these 

 features are precisely in fine with the ridge back of New Baltimore, and may reasonably be 

 regarded tentatively as parts of the Emmett moraine. The small bowldery knoll at Windmill 

 Point, in the east part of Detroit, probably also belongs to this moraine. Beyond this, however, 

 nothing that could be identified with it was observed. In all probability it merges into the 

 Detroit interlobate moraine on the Canadian side of Detroit River. 



ADAIR MORAINE. 



Northwest of Avoca the Yale moraine is a strong and apparently land-laid deposit, but 

 south of this latitude it has not been definitely recognized. If it continues its trend from the 

 region of strong development it might be expected to run southeast close to Pine River — perhaps 

 on the east side — to the western part of Kimball Township and to curve thence slightly west of 

 south in conformity with the other moraines. Its continuation may be found in a bowlder 

 belt, known as the Adair moraine, running a little east of north from a point near the shore of 

 Lake St. Clair about a mile northeast of Fair Haven and passing' a little east of Adair to the 

 bank of Pine River in sec. 16, St. Clair Township. In some places it is a low ridge with a 

 relief of a few feet, but in most places its relief is scarcely perceptible. Its course is marked 

 nearly everywhere by a moderate number of bowlders and by bowlder clay bordered on both 

 sides, but particularly on the east, by a formation that is without bowlders and is largely com- 

 posed of lake clay. If the lake clays along the south part of the belt were removed it seems 

 quite probable that the bowlder belt would stand out as a perceptible ridge. 



The United States Lake Survey chart of Lake St. Clair shows nothing in the bed of the 

 lake that could be correlated with this moraine, but an exposure of bowldery till and a low 

 knoll at Stony Point on the south side of Lake St. Clair, 20 miles east of the head of Detroit 

 River, may belong to it. 



TRANSVERSE RIDGES. 



Two of the transverse ridges that run southwest across the forty-third parallel in south- 

 western Mussey Township, St. Clair County (p. 266), appear to fade away in a swamp at the 

 county line in sees. 30 and 31. They may, however, be continued in a remarkably bowldery 

 tract that appears where Belle River breaks through the Imlay moraine in sec. 34, Imlay 

 Township. Eskers and ridges such as these are liable to be slightly displaced in passing from 

 one moraine to another. This bowldery tract is only a little north of the direct trend of the 

 ridges in Mussey Township, and it seems probable that it is related to these ridges, which also 

 carry large numbers of bowlders. 



BOWLDER BELTS AND SANDY PLAINS OF MONROE AND WAYNE COUNTIES. 



Except the low ridge extending 6 or 7 miles southwest from Birmingham, no terminal 

 moraines have been made out with certainty southwest from the Detroit interlobate moraine. 

 Slierzer'has found three bowldery belts which he regards tentatively as representing the course 

 of the ice border. These belts are partly concealed and in this way are broken into several 

 detached fragments by the heavy sand belts which cross the region on rather irregular lines. 



1 Sherzer, W. Ff., Geological report of Wayne County, Michigan Geol. and Biol. Survey, 1911, with large colored map showing surface, 

 features; Geological report of Monroe County, 1900, map; Detroit folio, Geol. Atlas XJ. S., U. S. Geol. Survey (in preparation). See also Leverett, 

 Frank, Surface geology and agricultural conditions in the southern peninsula of Michigan, Michigan Geol. and Biol. Survey, 1912, map. 



