Pleistocene Geology of Moravia Quadrangle 439 
(1) About two miles south of Moravia Mr. J. C. Rounds sunk 
a well which shows 75 feet of blue clay. This well lies north of 
the first valley loop proceeding southward from Moravia. It is 
in the valley bottom, and the water flows with some activity from 
the pipe. While details as to the depth and other material passed 
through in this well are lacking, the certainty expressed as to the 
thickness of the blue clay is given as the writer had it. 
(2) Directly north of the Lansing overflow channel, wells 
found along the east-west line approximately on the 1200-foot 
contour report several feet of blue clay. 
(3) At Locke there are several wells, some of which flow, and 
all of which give a record of blue clay. That of Burdette Robin- 
son, who lives a quarter of a mile southwest of the village, shows 
160 feet of blue clay overlain by six feet of gravel. That of C. E. 
Parks just across the highw'ay shows 170 feet of blue clay over- 
lain by 10 feet of gravel. North of the village a short distance 
A. A. Slocum has a well which gives 80 feet of blue clay beneath 
some four feet of light-colored clay. All of these wells reported 
gravel beneath the blue clay. In the part of the Moravia-Locke 
valley where these wells are located there is evidence of slight 
glacial erosion by Wisconsin ice. At this point the valley divides; 
the western arm bottoms in rock not far from the wells; in the 
eastern branch a well one mile distant gives rock at 96 feet. Over- 
deepening which characterizes the main valley a few miles north 
is absent here. We would expect it to be absent near the point 
where the longitudinal valley divides because the salient of rock 
between the two lesser valleys protects that portion of the major 
valley near its base from ice-erosion. Hence the presence here 
of drift older than the deposits made by the retreating Wisconsin 
ice is not improbable. 
(4) On the uplands north and east of Groton the wells with 
very few exceptions show several feet of blue clay. 
(5) About a half mile east of Jones Corners a well shows 60 feet 
of blue clay beneath twelve feet of gravel. This is on the farm 
of George Barrows. At the Summer Hill creamery a driven well 
shows 28 feet of blue clay beneath twelve feet of gravel. 
(6) Several wells about a mile and a half southeast of Peruville 
give a record of blue clay. 
(7) On the property of John M. Sherwood? one mile west of 
McLean? is a well which revealed forty feet of blue clay beneath 
