SAGINAW LOBE. 



145 



are conspicuous on the gently undulating as well as on the rough parts of the moraine in both 

 Indiana and Michigan. Considerable sand and gravel seem to be associated with even the 

 most clayey parts of the moraine, for strong wells are generally obtained at moderate depths. 



Four records of waterworks wells at Lagrange, all within the area of a town lot, are pre- 

 sented by Dryer 1 to show the great differences in structure. He remarks that the majority 

 of beds can not be correlated in any two of them. Dryer also calls attention to the occurrence 

 of coal fragments in the drift of western Lagrange County (the part covered by the Saginaw 

 lobe), but this is not surprising as the Saginaw lobe passed across the Michigan coal basin to 

 reach Lagrange County, Ind. 



The depth to rock is known at very few points in this region and where known indicates a 

 large amount of drift. In Lagrange County several wells go down about 200 feet without 

 reaching bedrock and but one well has been recorded as striking it. This was a farm well in 

 the southwest part of the county outside the limits of the Lagrange moraine; the record was 

 obtained by Dryer, who merely reports that "black slate" was struck at 150 feet. 



A prospect boring for artesian water at the county jail in Lagrange reached a depth of 

 205 feet without entering rock or obtaining a flow. It possesses interest, however, from the 

 reported occurrence, at a depth of 65 feet, of a soil bed which may mark the division line between 

 the Wisconsin and the pre-Wisconsin drift. A well about 4 miles south of Lagrange on the 

 farm of Dr. Drake is also reported to have penetrated a buried soil. The records of the bor- 

 ings are as follows: 



Record, of prospect boring at Lagrange jail. 



Feet. 



Till, yellow 15 



Till, blue, with thin beds of sand 50 



Mold or soil, brown (Sangamon?) 4 



Gravel, cemented 5 



Gravel, loose, with water 8 



Till, blue (Illinoian?) 45 



Gravel, cemented 8 



Sand and gravel, dry, or sandy till 70 



205 



On the sharp ridge about 4 miles east of Lagrange a well 202 feet in depth, largely through 

 till, struck no rock and failed to obtain water. On the same ridge another well obtained water 

 under a thick bed of till at 175 feet. Much of the ridge has a gravelly, cobbly surface; its north 

 end is sandy. 



On the Michigan part of the moraine many wells are sunk 75 feet or more before entering 

 water-bearing sand or gravel; some of them pass through considerable dry sand. The water 

 table is naturally low on account of the height of the moraine and the loose texture of the drift. 



Record of Drake well near Lagrange. 



Feet. 



Till, sandy, yellow l o 



Till, blue 41 



Gravel with inflammable gas 3 



Clay, blue (till?) 46 



Muck, black, with leaves and gas 6 



Clay, soft, blue; no pebbles noted 24 



Sand, water-bearing, coarse near bottom 10 



140 



OUTWASH. 



A gravelly and sandy outwash plain extends along the entire outer border of the Lagrange 

 moraine except for about 3 miles in western Clay and eastern Newberry townships, Lagrange 

 County, 5 to 8 miles west of Lagrange, where it gives place to a till plain. 



An outwash apron in the reentrant angle between the Saginaw and Huron-Erie lobes 

 southwest of Lagrange appears to have been built principally from the Huron-Erie lobe, for 

 its gravel is much coarser on the side of the Huron-Erie lobe than it is on the side of the Saginaw 

 lobe. Moreover, the slope away from the Huron-Erie lobe is the more rapid. The Saginaw 

 lobe appears to have simply held its ground north of the gravel plain while the Huron-Erie 

 lobe built up a large outwash apron. Gravel overspreads the southern tier of sections in Clay 

 Township (T. 37 N., E,. 9 E.) and about 12 square miles in the northwestern part of Clear 



'Eighteenth Ann. Rept. Indiana Dept. Geology and Nat. Res., 1893, pp. 80-81. 



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