Pleistocene Geology of Moravia Quadrangle 
397 
|i the moraine swells and the esker itself, bowlders are numerous. 
This is the only one of the four eskers already considered that 
' bears a conspicuous development of bowlders. 
No. 5. East of Lafayette is a valley opening northward. The 
1 last half mile of this valley before it joins the Fall Creek valley 
I carries an esker, the northern portion of which has attained a very 
I typical development. The esker in the distance over which it has 
I been mapped has an unbroken vertical range of about 120 feet. 
At the point where the valley widens rapidly the esker swings 
towards the eastern wall which it skirts for a short distance before 
it turns to the west into the flood plain section. The valley to the 
I east and south, it Was thought, ought to give some evidence of an 
I extension of the esker in that direction; but no ridge exists there. 
About one-half mile to the southeast is a marked development of 
low kames probably associated with the esker. Just west of this 
kame area is an ice-front drainage channel, the stream of which 
may have removed a portion of the esker. 
Northwest, in the flood plain of Fall Creek valley, and in line 
with the ridge above described, is another gravel ridge which I at 
first mapped as a separate esker. Its best development is noted 
near its western terminus where it is about 19 feet high, and its 
side walls slope 24°. Furthermore, its development here is very 
symmetrical. To the east, however, it gradually flattens, termin- 
ating in low kame knolls. The original development of both the 
esker and the low knolls of washed material has been somewhat 
obscured by the great quantity of outwash deposits that are graded 
down the Fall Creek valley. It is probable that these discon- 
nected ridges belong to the same subglacial stream, and that the 
gap may be due to both an incomplete initial development and a 
later partial removal by ice-front stream erosion. 
No. 6. An esker, that has a beautifully meandering course, 
may be seen a short distance south and east of Rogers Corners. 
This ridge is approximately one-half a mile long. Its southern 
end has been modified considerably by drainage-dissection, as it 
reaches to the axis and probably formerly beyond the axis of Fall 
Creek valley. There is a faint suggestion towards the bottom of 
the valley of two distributaries though the case is not clear in the 
presence of alterations or obscurity through outwash deposits. 
The ridge attains nowhere a height of more than twelve to fifteen 
feet, and its side walls slope gently. Furthermore in its texture 
fine material predominates. 
